TY  - JOUR
AU  - Gajica, Gordana
AU  - Šajnović, Aleksandra
AU  - Stojanović, Ksenija A.
AU  - Schwarzbauer, Jan
AU  - Kostić, Aleksandar
AU  - Jovančićević, Branimir
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4847
AB  - The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were performed on two selected samples that showed high content of total organic carbon and hydrocarbon generation potential, but also certain variations in sources/depositional environment of organic matter (type I and mixed type I/II kerogen) within previous research of the oil shales sample set. The biomarker signatures were evaluated using gas chromatography-mass spectrometry (GC-MS) and δ13C of individual n-alkanes in bitumen and liquid pyrolysates. The molecular composition of liquid pyrolysates from the OS is very similar to those in initial bitumen, independently on kerogen type, confirming algal origin of organic matter (OM) deposited in lacustrine environment, even more apparently than results of initial bitumen. Therefore, OS can be useful for assessment of source and depositional environment of OM. Pyrolysis in the CS caused more intense thermal alterations, therefore the source fingerprints sometimes notably disappear. The liquid pyrolysates from the CS have the distributions of biomarkers similar to those in crude oils. The biomarker maturity parameters showed slightly higher values in the CS pyrolysate of mixed type I/II kerogen in relation to type I kerogen. δ13C of n-alkanes in liquid pyrolysates from the OS are isotopically lighter in comparison to bitumen, independently on kerogen type. Oppositely, in liquid pyrolysates from the CS, they become heavier than in bitumen, indicating the thermal influence on δ13C signatures, with more pronounced difference for type I kerogen.
PB  - Elsevier
T2  - Marine and Petroleum Geology
T1  - A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)
VL  - 136
SP  - 105383
DO  - 10.1016/j.marpetgeo.2021.105383
ER  - 

@article{
author = "Gajica, Gordana and Šajnović, Aleksandra and Stojanović, Ksenija A. and Schwarzbauer, Jan and Kostić, Aleksandar and Jovančićević, Branimir",
year = "2022",
abstract = "The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were performed on two selected samples that showed high content of total organic carbon and hydrocarbon generation potential, but also certain variations in sources/depositional environment of organic matter (type I and mixed type I/II kerogen) within previous research of the oil shales sample set. The biomarker signatures were evaluated using gas chromatography-mass spectrometry (GC-MS) and δ13C of individual n-alkanes in bitumen and liquid pyrolysates. The molecular composition of liquid pyrolysates from the OS is very similar to those in initial bitumen, independently on kerogen type, confirming algal origin of organic matter (OM) deposited in lacustrine environment, even more apparently than results of initial bitumen. Therefore, OS can be useful for assessment of source and depositional environment of OM. Pyrolysis in the CS caused more intense thermal alterations, therefore the source fingerprints sometimes notably disappear. The liquid pyrolysates from the CS have the distributions of biomarkers similar to those in crude oils. The biomarker maturity parameters showed slightly higher values in the CS pyrolysate of mixed type I/II kerogen in relation to type I kerogen. δ13C of n-alkanes in liquid pyrolysates from the OS are isotopically lighter in comparison to bitumen, independently on kerogen type. Oppositely, in liquid pyrolysates from the CS, they become heavier than in bitumen, indicating the thermal influence on δ13C signatures, with more pronounced difference for type I kerogen.",
publisher = "Elsevier",
journal = "Marine and Petroleum Geology",
title = "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)",
volume = "136",
pages = "105383",
doi = "10.1016/j.marpetgeo.2021.105383"
}

Gajica, G., Šajnović, A., Stojanović, K. A., Schwarzbauer, J., Kostić, A.,& Jovančićević, B.. (2022). A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems). in Marine and Petroleum Geology
Elsevier., 136, 105383.
https://doi.org/10.1016/j.marpetgeo.2021.105383

Gajica G, Šajnović A, Stojanović KA, Schwarzbauer J, Kostić A, Jovančićević B. A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems). in Marine and Petroleum Geology. 2022;136:105383.
doi:10.1016/j.marpetgeo.2021.105383 .

Gajica, Gordana, Šajnović, Aleksandra, Stojanović, Ksenija A., Schwarzbauer, Jan, Kostić, Aleksandar, Jovančićević, Branimir, "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)" in Marine and Petroleum Geology, 136 (2022):105383,
https://doi.org/10.1016/j.marpetgeo.2021.105383 . .

TY  - DATA
AU  - Jovančićević, Branimir
AU  - Gajica, Gordana
AU  - Veselinović, Gordana
AU  - Kašanin-Grubin, Milica
AU  - Šolević-Knudsen, Tatjana
AU  - Štrbac, Snežana
AU  - Šajnović, Aleksandra
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5142
PB  - Beograd : Srpsko hemijsko društvo
T2  - Journal of the Serbian Chemical Society
T1  - Supplementary information for the article: Jovančićević, B.; Gajica, G.; Veselinović, G.; Kašanin-Grubin, M.; Šolević Knudsen, T.; Štrbac, S.; Šajnović, A. The Use of Biological Markers in Organic Geochemical Investigations of the Origin and Geological History of Crude Oils (I) and in the Assessment of Oil Pollution of Rivers and River Sediments of Serbia (II). Journal of the Serbian Chemical Society, 2022.
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5142
ER  - 

@misc{
author = "Jovančićević, Branimir and Gajica, Gordana and Veselinović, Gordana and Kašanin-Grubin, Milica and Šolević-Knudsen, Tatjana and Štrbac, Snežana and Šajnović, Aleksandra",
year = "2022",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Journal of the Serbian Chemical Society",
title = "Supplementary information for the article: Jovančićević, B.; Gajica, G.; Veselinović, G.; Kašanin-Grubin, M.; Šolević Knudsen, T.; Štrbac, S.; Šajnović, A. The Use of Biological Markers in Organic Geochemical Investigations of the Origin and Geological History of Crude Oils (I) and in the Assessment of Oil Pollution of Rivers and River Sediments of Serbia (II). Journal of the Serbian Chemical Society, 2022.",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5142"
}

Jovančićević, B., Gajica, G., Veselinović, G., Kašanin-Grubin, M., Šolević-Knudsen, T., Štrbac, S.,& Šajnović, A.. (2022). Supplementary information for the article: Jovančićević, B.; Gajica, G.; Veselinović, G.; Kašanin-Grubin, M.; Šolević Knudsen, T.; Štrbac, S.; Šajnović, A. The Use of Biological Markers in Organic Geochemical Investigations of the Origin and Geological History of Crude Oils (I) and in the Assessment of Oil Pollution of Rivers and River Sediments of Serbia (II). Journal of the Serbian Chemical Society, 2022.. in Journal of the Serbian Chemical Society
Beograd : Srpsko hemijsko društvo..
https://hdl.handle.net/21.15107/rcub_cherry_5142

Jovančićević B, Gajica G, Veselinović G, Kašanin-Grubin M, Šolević-Knudsen T, Štrbac S, Šajnović A. Supplementary information for the article: Jovančićević, B.; Gajica, G.; Veselinović, G.; Kašanin-Grubin, M.; Šolević Knudsen, T.; Štrbac, S.; Šajnović, A. The Use of Biological Markers in Organic Geochemical Investigations of the Origin and Geological History of Crude Oils (I) and in the Assessment of Oil Pollution of Rivers and River Sediments of Serbia (II). Journal of the Serbian Chemical Society, 2022.. in Journal of the Serbian Chemical Society. 2022;.
https://hdl.handle.net/21.15107/rcub_cherry_5142 .

Jovančićević, Branimir, Gajica, Gordana, Veselinović, Gordana, Kašanin-Grubin, Milica, Šolević-Knudsen, Tatjana, Štrbac, Snežana, Šajnović, Aleksandra, "Supplementary information for the article: Jovančićević, B.; Gajica, G.; Veselinović, G.; Kašanin-Grubin, M.; Šolević Knudsen, T.; Štrbac, S.; Šajnović, A. The Use of Biological Markers in Organic Geochemical Investigations of the Origin and Geological History of Crude Oils (I) and in the Assessment of Oil Pollution of Rivers and River Sediments of Serbia (II). Journal of the Serbian Chemical Society, 2022." in Journal of the Serbian Chemical Society (2022),
https://hdl.handle.net/21.15107/rcub_cherry_5142 .

TY  - JOUR
AU  - Pržulj, Sanja
AU  - Radojičić, Ana
AU  - Kašanin-Grubin, Milica
AU  - Pešević, Dušica
AU  - Stojadinović, Sanja M.
AU  - Jovančićević, Branimir
AU  - Veselinović, Gorica
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5143
AB  - Heavy metals are naturally occurring elements, but they are regarded as significant environmental pollutants due to their high density and high toxicity even at low concentrations. The aim of this paper is the evaluation of the pollution level of heavy metals in the river and riverbank sediments, as well as the estimation of their origin and spatial differences along the course of the Vrbas River through Banja Luka. The concentrations of metals have been assessed using the Inductively coupled plasma – optical emission spectrometry and Advanced mercury analyzer for mercury determination. The anthropogenic impact on heavy metal concentration in sediments was estimated by the calculating of pollution indices: geoaccumulation index (Igeo), contamination factor (Cf), pollution load index (PLI) and potential ecological risk index (Er). Obtained results indicate that there is no statistically significant spatial difference in metal concentration, indicating that heavy metals in sediments have a constant source. The anthropogenic impact expressed by the values of pollution indices showed that sites are generally uncontaminated by Co, Cr and V and moderately contaminated by Zn, Cu and Ni. On the contrary, lead, mercury and cadmium pose the highest ecological risk. The anthropogenic source of Pb, Hg and Cd is industry, municipal waste and the combustion of fossil fuels. The obtained results demonstrate the high ecological risk and the need for environ-mental monitoring, with the aim to support an efficient strategy to reduce local pollution and contamination of the investigated system.
PB  - Beograd : Srpsko hemijsko društvo
T2  - Journal of the Serbian Chemical Society
T1  - Distribution and provenance of heavy metals in sediments of the Vrbas River, Bosnia and Herzegovina
VL  - 87
IS  - 4
SP  - 519
EP  - 530
DO  - 10.2298/JSC210608070P
ER  - 

@article{
author = "Pržulj, Sanja and Radojičić, Ana and Kašanin-Grubin, Milica and Pešević, Dušica and Stojadinović, Sanja M. and Jovančićević, Branimir and Veselinović, Gorica",
year = "2022",
abstract = "Heavy metals are naturally occurring elements, but they are regarded as significant environmental pollutants due to their high density and high toxicity even at low concentrations. The aim of this paper is the evaluation of the pollution level of heavy metals in the river and riverbank sediments, as well as the estimation of their origin and spatial differences along the course of the Vrbas River through Banja Luka. The concentrations of metals have been assessed using the Inductively coupled plasma – optical emission spectrometry and Advanced mercury analyzer for mercury determination. The anthropogenic impact on heavy metal concentration in sediments was estimated by the calculating of pollution indices: geoaccumulation index (Igeo), contamination factor (Cf), pollution load index (PLI) and potential ecological risk index (Er). Obtained results indicate that there is no statistically significant spatial difference in metal concentration, indicating that heavy metals in sediments have a constant source. The anthropogenic impact expressed by the values of pollution indices showed that sites are generally uncontaminated by Co, Cr and V and moderately contaminated by Zn, Cu and Ni. On the contrary, lead, mercury and cadmium pose the highest ecological risk. The anthropogenic source of Pb, Hg and Cd is industry, municipal waste and the combustion of fossil fuels. The obtained results demonstrate the high ecological risk and the need for environ-mental monitoring, with the aim to support an efficient strategy to reduce local pollution and contamination of the investigated system.",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Journal of the Serbian Chemical Society",
title = "Distribution and provenance of heavy metals in sediments of the Vrbas River, Bosnia and Herzegovina",
volume = "87",
number = "4",
pages = "519-530",
doi = "10.2298/JSC210608070P"
}

Pržulj, S., Radojičić, A., Kašanin-Grubin, M., Pešević, D., Stojadinović, S. M., Jovančićević, B.,& Veselinović, G.. (2022). Distribution and provenance of heavy metals in sediments of the Vrbas River, Bosnia and Herzegovina. in Journal of the Serbian Chemical Society
Beograd : Srpsko hemijsko društvo., 87(4), 519-530.
https://doi.org/10.2298/JSC210608070P

Pržulj S, Radojičić A, Kašanin-Grubin M, Pešević D, Stojadinović SM, Jovančićević B, Veselinović G. Distribution and provenance of heavy metals in sediments of the Vrbas River, Bosnia and Herzegovina. in Journal of the Serbian Chemical Society. 2022;87(4):519-530.
doi:10.2298/JSC210608070P .

Pržulj, Sanja, Radojičić, Ana, Kašanin-Grubin, Milica, Pešević, Dušica, Stojadinović, Sanja M., Jovančićević, Branimir, Veselinović, Gorica, "Distribution and provenance of heavy metals in sediments of the Vrbas River, Bosnia and Herzegovina" in Journal of the Serbian Chemical Society, 87, no. 4 (2022):519-530,
https://doi.org/10.2298/JSC210608070P . .

TY  - JOUR
AU  - Bulatović, Sandra
AU  - Ilić, Mila V.
AU  - Šolević-Knudsen, Tatjana
AU  - Milić, Jelena
AU  - Pucarević, Mira
AU  - Jovančićević, Branimir
AU  - Vrvić, Miroslav M.
PY  - 2022
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4753
AB  - The oil pollutant in the Sava River aquifer in the residential area of Belgrade, Serbia was investigated in order to analyze the extent, origin and spatial distribution of the pollution, with the aim to estimate potential human health risks from exposure to the compounds detected. Analytical methods indicated that the dominant compounds in this oil pollutant were gasoline range organic compounds. Benzene, toluene, ethylbenzene and xylenes (BTEX) were identified as compounds of concern and quantified by headspace gas chromatography. The concentrations of benzene measured at all sampling points were higher than the remediation value while the maximum concentrations of BTEX quantified were among the highest concentrations of these compounds reported in the petroleum-contaminated aquifers in the world. The assessment of the human health risks from exposure to BTEX-covered industrial scenario for adult receptors and residential scenario for adult receptors and children. The exposure routes analyzed were dermal contact with and ingestion of contaminated water, considering both cancer and non-cancer effects. The analysis of the lifetime incremental cancer risk indicated the potential for adverse health effects for human exposure at the investigated location, and because of that it was interpreted as an unacceptable risk level or risks of high priority which required immediate consideration for remedial measures at this location. A complete set of mitigation measures was proposed including: groundwater decontamination treatment, installation of filters for tap water, development of the system for monitoring of BTEX in the groundwater and development of the emergency response capacities at this location.
PB  - Springer
T2  - Environmental Geochemistry and Health
T1  - Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia
VL  - 44
IS  - 10
SP  - 3451
EP  - 3472
DO  - 10.1007/s10653-021-01119-2
ER  - 

@article{
author = "Bulatović, Sandra and Ilić, Mila V. and Šolević-Knudsen, Tatjana and Milić, Jelena and Pucarević, Mira and Jovančićević, Branimir and Vrvić, Miroslav M.",
year = "2022",
abstract = "The oil pollutant in the Sava River aquifer in the residential area of Belgrade, Serbia was investigated in order to analyze the extent, origin and spatial distribution of the pollution, with the aim to estimate potential human health risks from exposure to the compounds detected. Analytical methods indicated that the dominant compounds in this oil pollutant were gasoline range organic compounds. Benzene, toluene, ethylbenzene and xylenes (BTEX) were identified as compounds of concern and quantified by headspace gas chromatography. The concentrations of benzene measured at all sampling points were higher than the remediation value while the maximum concentrations of BTEX quantified were among the highest concentrations of these compounds reported in the petroleum-contaminated aquifers in the world. The assessment of the human health risks from exposure to BTEX-covered industrial scenario for adult receptors and residential scenario for adult receptors and children. The exposure routes analyzed were dermal contact with and ingestion of contaminated water, considering both cancer and non-cancer effects. The analysis of the lifetime incremental cancer risk indicated the potential for adverse health effects for human exposure at the investigated location, and because of that it was interpreted as an unacceptable risk level or risks of high priority which required immediate consideration for remedial measures at this location. A complete set of mitigation measures was proposed including: groundwater decontamination treatment, installation of filters for tap water, development of the system for monitoring of BTEX in the groundwater and development of the emergency response capacities at this location.",
publisher = "Springer",
journal = "Environmental Geochemistry and Health",
title = "Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia",
volume = "44",
number = "10",
pages = "3451-3472",
doi = "10.1007/s10653-021-01119-2"
}

Bulatović, S., Ilić, M. V., Šolević-Knudsen, T., Milić, J., Pucarević, M., Jovančićević, B.,& Vrvić, M. M.. (2022). Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia. in Environmental Geochemistry and Health
Springer., 44(10), 3451-3472.
https://doi.org/10.1007/s10653-021-01119-2

Bulatović S, Ilić MV, Šolević-Knudsen T, Milić J, Pucarević M, Jovančićević B, Vrvić MM. Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia. in Environmental Geochemistry and Health. 2022;44(10):3451-3472.
doi:10.1007/s10653-021-01119-2 .

Bulatović, Sandra, Ilić, Mila V., Šolević-Knudsen, Tatjana, Milić, Jelena, Pucarević, Mira, Jovančićević, Branimir, Vrvić, Miroslav M., "Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia" in Environmental Geochemistry and Health, 44, no. 10 (2022):3451-3472,
https://doi.org/10.1007/s10653-021-01119-2 . .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Gajica, Gordana
AU  - Veselinović, Gordana
AU  - Kašanin-Grubin, Milica
AU  - Šolević-Knudsen, Tatjana
AU  - Štrbac, Snežana
AU  - Šajnović, Aleksandra
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5141
AB  - Biological markers (BMs) are organic compounds in oils in which a precursor is known, and during the transformation of organic matter these compounds undergo certain structural and stereochemical changes. Based on the established precursors of BMs, the origin of the examined oils can be estimated, and based on the intensity and the type of changes and also geological history. It includes defining the deposition medium, the degree of maturation, the length of the oil migration path, the degree of biodegradation. The most studied and applied BMs are normal alkanes, isoprenoid aliphatic alkanes pristane and phytane, and polycyclic alkanes of the sterane and terapane type. On the other hand, in the environmental chemistry, these compounds can significantly contribute to the identification of petroleum pollutants, as well as to the assessment of the migration mechanism and the intensity of biodegradation. This review paper first presents the results related to the application of BMs in the organic geochemical correlations of oil in the south-eastern part of the Pannonian Basin (I). The second part provides an overview of those researches in which the same BMs were used in the identification of oil pollutants and in monitoring their changes during the migration and the biodegradation in rivers and river sediments of Serbia (II).
PB  - Beograd : Srpsko hemijsko društvo
T2  - Journal of the Serbian Chemical Society
T1  - The use of biological markers in organic geochemical investigations of the origin and geological history of crude oils (I) and in the assessment of oil pollution of rivers and river sediments of Serbia (II)
VL  - 87
SP  - 7
EP  - 25
DO  - 10.2298/JSC210701072J
ER  - 

@article{
author = "Jovančićević, Branimir and Gajica, Gordana and Veselinović, Gordana and Kašanin-Grubin, Milica and Šolević-Knudsen, Tatjana and Štrbac, Snežana and Šajnović, Aleksandra",
year = "2022",
abstract = "Biological markers (BMs) are organic compounds in oils in which a precursor is known, and during the transformation of organic matter these compounds undergo certain structural and stereochemical changes. Based on the established precursors of BMs, the origin of the examined oils can be estimated, and based on the intensity and the type of changes and also geological history. It includes defining the deposition medium, the degree of maturation, the length of the oil migration path, the degree of biodegradation. The most studied and applied BMs are normal alkanes, isoprenoid aliphatic alkanes pristane and phytane, and polycyclic alkanes of the sterane and terapane type. On the other hand, in the environmental chemistry, these compounds can significantly contribute to the identification of petroleum pollutants, as well as to the assessment of the migration mechanism and the intensity of biodegradation. This review paper first presents the results related to the application of BMs in the organic geochemical correlations of oil in the south-eastern part of the Pannonian Basin (I). The second part provides an overview of those researches in which the same BMs were used in the identification of oil pollutants and in monitoring their changes during the migration and the biodegradation in rivers and river sediments of Serbia (II).",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Journal of the Serbian Chemical Society",
title = "The use of biological markers in organic geochemical investigations of the origin and geological history of crude oils (I) and in the assessment of oil pollution of rivers and river sediments of Serbia (II)",
volume = "87",
pages = "7-25",
doi = "10.2298/JSC210701072J"
}

Jovančićević, B., Gajica, G., Veselinović, G., Kašanin-Grubin, M., Šolević-Knudsen, T., Štrbac, S.,& Šajnović, A.. (2022). The use of biological markers in organic geochemical investigations of the origin and geological history of crude oils (I) and in the assessment of oil pollution of rivers and river sediments of Serbia (II). in Journal of the Serbian Chemical Society
Beograd : Srpsko hemijsko društvo., 87, 7-25.
https://doi.org/10.2298/JSC210701072J

Jovančićević B, Gajica G, Veselinović G, Kašanin-Grubin M, Šolević-Knudsen T, Štrbac S, Šajnović A. The use of biological markers in organic geochemical investigations of the origin and geological history of crude oils (I) and in the assessment of oil pollution of rivers and river sediments of Serbia (II). in Journal of the Serbian Chemical Society. 2022;87:7-25.
doi:10.2298/JSC210701072J .

Jovančićević, Branimir, Gajica, Gordana, Veselinović, Gordana, Kašanin-Grubin, Milica, Šolević-Knudsen, Tatjana, Štrbac, Snežana, Šajnović, Aleksandra, "The use of biological markers in organic geochemical investigations of the origin and geological history of crude oils (I) and in the assessment of oil pollution of rivers and river sediments of Serbia (II)" in Journal of the Serbian Chemical Society, 87 (2022):7-25,
https://doi.org/10.2298/JSC210701072J . .

TY  - JOUR
AU  - Stojadinović, Sanja M.
AU  - Šajnović, Aleksandra
AU  - Kašanin-Grubin, Milica
AU  - Gajica, Gordana
AU  - Veselinović, Gorica
AU  - Štrbac, Snežana
AU  - Jovančićević, Branimir
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5079
AB  - Abstract
Purpose The Great War Island (GWI) is a landform of exceptional features and a protected area located in the center of
Belgrade at the Sava and Danube River’s confluence. The position of GWI causes a large number of possible hydrocar-
bons inputs that influence the quality of both river waters and sediments. The main objective of this research is to assess
the distribution and source of hydrocarbons in sediments deposited at the GWI depending on the river’s flow regimes and
depositional environment.
Material and methods Sediment samples were collected from 16 sites (11 sites along the GWI’s coast, 4 sites from the
inner of the Island, and 1 specific wetland site). The grain size was determined using a standard wet sieving procedure. The
extractable organic matter (OM) was quantified after Soxhlet extraction, and aliphatic and aromatic fractions were isolated
by column chromatography. n-Alkanes, diterpanes, terpanes, steranes, and 16 PAHs are analyzed by gas chromatography-
mass spectrometry.
Results and discussion Sand fraction predominates in coastal samples, and clay size fraction in the samples from the inner
island environment. The predominance of odd higher n-alkanes indicates the terrestrial origin of OM, while the distribution
of lower n-alkanes indicates a certain proportion of algae, bacteria, and/or high maturity of OM. The presence of oil-type
pollutants is confirmed by thermodynamically stable biomarker isomers and/or the presence of unresolved complex mixture
(UCM). Inner island samples are characterized by the largest amount of Corg (up 6%), indicating high bioproductivity and
good preservation of OM. Samples from wetland environment are distinguished by the domination of pimaranes and phyl-
locladanes among saturated hydrocarbons.
Conclusions This study revealed that sediments of the GWI mainly contain native OM with a certain anthropogenic input.
The native OM predominately comes from higher terrestrial plants (Salix alba, Populus nigra, Fraxinus viridis, Taxodium
distichum Rich.), followed by various types of grasses, macrophytes (Salvinia natans, Nymphaea alba), bacteria, algae, and
phytoplankton. Anthropogenic OM originates from petroleum, but also combustion products arrived by deposition from
the air and runoff.
PB  - Springer
T2  - Journal of Soils and Sediments
T1  - Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia)
VL  - 22
SP  - 640
EP  - 655
DO  - 10.1007/s11368-021-03103-w
ER  - 

@article{
author = "Stojadinović, Sanja M. and Šajnović, Aleksandra and Kašanin-Grubin, Milica and Gajica, Gordana and Veselinović, Gorica and Štrbac, Snežana and Jovančićević, Branimir",
year = "2022",
abstract = "Abstract
Purpose The Great War Island (GWI) is a landform of exceptional features and a protected area located in the center of
Belgrade at the Sava and Danube River’s confluence. The position of GWI causes a large number of possible hydrocar-
bons inputs that influence the quality of both river waters and sediments. The main objective of this research is to assess
the distribution and source of hydrocarbons in sediments deposited at the GWI depending on the river’s flow regimes and
depositional environment.
Material and methods Sediment samples were collected from 16 sites (11 sites along the GWI’s coast, 4 sites from the
inner of the Island, and 1 specific wetland site). The grain size was determined using a standard wet sieving procedure. The
extractable organic matter (OM) was quantified after Soxhlet extraction, and aliphatic and aromatic fractions were isolated
by column chromatography. n-Alkanes, diterpanes, terpanes, steranes, and 16 PAHs are analyzed by gas chromatography-
mass spectrometry.
Results and discussion Sand fraction predominates in coastal samples, and clay size fraction in the samples from the inner
island environment. The predominance of odd higher n-alkanes indicates the terrestrial origin of OM, while the distribution
of lower n-alkanes indicates a certain proportion of algae, bacteria, and/or high maturity of OM. The presence of oil-type
pollutants is confirmed by thermodynamically stable biomarker isomers and/or the presence of unresolved complex mixture
(UCM). Inner island samples are characterized by the largest amount of Corg (up 6%), indicating high bioproductivity and
good preservation of OM. Samples from wetland environment are distinguished by the domination of pimaranes and phyl-
locladanes among saturated hydrocarbons.
Conclusions This study revealed that sediments of the GWI mainly contain native OM with a certain anthropogenic input.
The native OM predominately comes from higher terrestrial plants (Salix alba, Populus nigra, Fraxinus viridis, Taxodium
distichum Rich.), followed by various types of grasses, macrophytes (Salvinia natans, Nymphaea alba), bacteria, algae, and
phytoplankton. Anthropogenic OM originates from petroleum, but also combustion products arrived by deposition from
the air and runoff.",
publisher = "Springer",
journal = "Journal of Soils and Sediments",
title = "Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia)",
volume = "22",
pages = "640-655",
doi = "10.1007/s11368-021-03103-w"
}

Stojadinović, S. M., Šajnović, A., Kašanin-Grubin, M., Gajica, G., Veselinović, G., Štrbac, S.,& Jovančićević, B.. (2022). Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia). in Journal of Soils and Sediments
Springer., 22, 640-655.
https://doi.org/10.1007/s11368-021-03103-w

Stojadinović SM, Šajnović A, Kašanin-Grubin M, Gajica G, Veselinović G, Štrbac S, Jovančićević B. Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia). in Journal of Soils and Sediments. 2022;22:640-655.
doi:10.1007/s11368-021-03103-w .

Stojadinović, Sanja M., Šajnović, Aleksandra, Kašanin-Grubin, Milica, Gajica, Gordana, Veselinović, Gorica, Štrbac, Snežana, Jovančićević, Branimir, "Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia)" in Journal of Soils and Sediments, 22 (2022):640-655,
https://doi.org/10.1007/s11368-021-03103-w . .

TY  - JOUR
AU  - Stojadinović, Sanja M.
AU  - Šajnović, Aleksandra
AU  - Kašanin-Grubin, Milica
AU  - Gajica, Gordana
AU  - Veselinović, Gorica
AU  - Štrbac, Snežana
AU  - Jovančićević, Branimir
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5018
AB  - Purpose The Great War Island (GWI) is a landform of exceptional features and a protected area located in the center of
Belgrade at the Sava and Danube River’s confuence. The position of GWI causes a large number of possible hydrocarbons inputs that infuence the quality of both river waters and sediments. The main objective of this research is to assess
the distribution and source of hydrocarbons in sediments deposited at the GWI depending on the river’s fow regimes and
depositional environment.
Material and methods Sediment samples were collected from 16 sites (11 sites along the GWI’s coast, 4 sites from the
inner of the Island, and 1 specifc wetland site). The grain size was determined using a standard wet sieving procedure. The
extractable organic matter (OM) was quantifed after Soxhlet extraction, and aliphatic and aromatic fractions were isolated
by column chromatography. n-Alkanes, diterpanes, terpanes, steranes, and 16 PAHs are analyzed by gas chromatographymass spectrometry.
Results and discussion Sand fraction predominates in coastal samples, and clay size fraction in the samples from the inner
island environment. The predominance of odd higher n-alkanes indicates the terrestrial origin of OM, while the distribution
of lower n-alkanes indicates a certain proportion of algae, bacteria, and/or high maturity of OM. The presence of oil-type
pollutants is confrmed by thermodynamically stable biomarker isomers and/or the presence of unresolved complex mixture
(UCM). Inner island samples are characterized by the largest amount of Corg (up 6%), indicating high bioproductivity and
good preservation of OM. Samples from wetland environment are distinguished by the domination of pimaranes and phyllocladanes among saturated hydrocarbons.
Conclusions This study revealed that sediments of the GWI mainly contain native OM with a certain anthropogenic input.
The native OM predominately comes from higher terrestrial plants (Salix alba, Populus nigra, Fraxinus viridis, Taxodium
distichum Rich.), followed by various types of grasses, macrophytes (Salvinia natans, Nymphaea alba), bacteria, algae, and
phytoplankton. Anthropogenic OM originates from petroleum, but also combustion products arrived by deposition from
the air and runof.
PB  - SpringerLink
T2  - Journal of Soils and Sediments
T1  - Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia)
VL  - 22
IS  - 2
SP  - 640
EP  - 655
DO  - 10.1007/s11368-021-03103-w
ER  - 

@article{
author = "Stojadinović, Sanja M. and Šajnović, Aleksandra and Kašanin-Grubin, Milica and Gajica, Gordana and Veselinović, Gorica and Štrbac, Snežana and Jovančićević, Branimir",
year = "2022",
abstract = "Purpose The Great War Island (GWI) is a landform of exceptional features and a protected area located in the center of
Belgrade at the Sava and Danube River’s confuence. The position of GWI causes a large number of possible hydrocarbons inputs that infuence the quality of both river waters and sediments. The main objective of this research is to assess
the distribution and source of hydrocarbons in sediments deposited at the GWI depending on the river’s fow regimes and
depositional environment.
Material and methods Sediment samples were collected from 16 sites (11 sites along the GWI’s coast, 4 sites from the
inner of the Island, and 1 specifc wetland site). The grain size was determined using a standard wet sieving procedure. The
extractable organic matter (OM) was quantifed after Soxhlet extraction, and aliphatic and aromatic fractions were isolated
by column chromatography. n-Alkanes, diterpanes, terpanes, steranes, and 16 PAHs are analyzed by gas chromatographymass spectrometry.
Results and discussion Sand fraction predominates in coastal samples, and clay size fraction in the samples from the inner
island environment. The predominance of odd higher n-alkanes indicates the terrestrial origin of OM, while the distribution
of lower n-alkanes indicates a certain proportion of algae, bacteria, and/or high maturity of OM. The presence of oil-type
pollutants is confrmed by thermodynamically stable biomarker isomers and/or the presence of unresolved complex mixture
(UCM). Inner island samples are characterized by the largest amount of Corg (up 6%), indicating high bioproductivity and
good preservation of OM. Samples from wetland environment are distinguished by the domination of pimaranes and phyllocladanes among saturated hydrocarbons.
Conclusions This study revealed that sediments of the GWI mainly contain native OM with a certain anthropogenic input.
The native OM predominately comes from higher terrestrial plants (Salix alba, Populus nigra, Fraxinus viridis, Taxodium
distichum Rich.), followed by various types of grasses, macrophytes (Salvinia natans, Nymphaea alba), bacteria, algae, and
phytoplankton. Anthropogenic OM originates from petroleum, but also combustion products arrived by deposition from
the air and runof.",
publisher = "SpringerLink",
journal = "Journal of Soils and Sediments",
title = "Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia)",
volume = "22",
number = "2",
pages = "640-655",
doi = "10.1007/s11368-021-03103-w"
}

Stojadinović, S. M., Šajnović, A., Kašanin-Grubin, M., Gajica, G., Veselinović, G., Štrbac, S.,& Jovančićević, B.. (2022). Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia). in Journal of Soils and Sediments
SpringerLink., 22(2), 640-655.
https://doi.org/10.1007/s11368-021-03103-w

Stojadinović SM, Šajnović A, Kašanin-Grubin M, Gajica G, Veselinović G, Štrbac S, Jovančićević B. Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia). in Journal of Soils and Sediments. 2022;22(2):640-655.
doi:10.1007/s11368-021-03103-w .

Stojadinović, Sanja M., Šajnović, Aleksandra, Kašanin-Grubin, Milica, Gajica, Gordana, Veselinović, Gorica, Štrbac, Snežana, Jovančićević, Branimir, "Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia)" in Journal of Soils and Sediments, 22, no. 2 (2022):640-655,
https://doi.org/10.1007/s11368-021-03103-w . .

TY  - JOUR
AU  - Gajica, Gordana
AU  - Šajnović, Aleksandra
AU  - Stojanović, Ksenija A.
AU  - Schwarzbauer, Jan
AU  - Kostić, Aleksandar
AU  - Jovančićević, Branimir
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4846
AB  - The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were performed on two selected samples that showed high content of total organic carbon and hydrocarbon generation potential, but also certain variations in sources/depositional environment of organic matter (type I and mixed type I/II kerogen) within previous research of the oil shales sample set. The biomarker signatures were evaluated using gas chromatography-mass spectrometry (GC-MS) and δ13C of individual n-alkanes in bitumen and liquid pyrolysates. The molecular composition of liquid pyrolysates from the OS is very similar to those in initial bitumen, independently on kerogen type, confirming algal origin of organic matter (OM) deposited in lacustrine environment, even more apparently than results of initial bitumen. Therefore, OS can be useful for assessment of source and depositional environment of OM. Pyrolysis in the CS caused more intense thermal alterations, therefore the source fingerprints sometimes notably disappear. The liquid pyrolysates from the CS have the distributions of biomarkers similar to those in crude oils. The biomarker maturity parameters showed slightly higher values in the CS pyrolysate of mixed type I/II kerogen in relation to type I kerogen. δ13C of n-alkanes in liquid pyrolysates from the OS are isotopically lighter in comparison to bitumen, independently on kerogen type. Oppositely, in liquid pyrolysates from the CS, they become heavier than in bitumen, indicating the thermal influence on δ13C signatures, with more pronounced difference for type I kerogen.
PB  - Elsevier
T2  - Marine and Petroleum Geology
T1  - A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)
VL  - 136
SP  - 105383
DO  - 10.1016/j.marpetgeo.2021.105383
ER  - 

@article{
author = "Gajica, Gordana and Šajnović, Aleksandra and Stojanović, Ksenija A. and Schwarzbauer, Jan and Kostić, Aleksandar and Jovančićević, Branimir",
year = "2022",
abstract = "The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were performed on two selected samples that showed high content of total organic carbon and hydrocarbon generation potential, but also certain variations in sources/depositional environment of organic matter (type I and mixed type I/II kerogen) within previous research of the oil shales sample set. The biomarker signatures were evaluated using gas chromatography-mass spectrometry (GC-MS) and δ13C of individual n-alkanes in bitumen and liquid pyrolysates. The molecular composition of liquid pyrolysates from the OS is very similar to those in initial bitumen, independently on kerogen type, confirming algal origin of organic matter (OM) deposited in lacustrine environment, even more apparently than results of initial bitumen. Therefore, OS can be useful for assessment of source and depositional environment of OM. Pyrolysis in the CS caused more intense thermal alterations, therefore the source fingerprints sometimes notably disappear. The liquid pyrolysates from the CS have the distributions of biomarkers similar to those in crude oils. The biomarker maturity parameters showed slightly higher values in the CS pyrolysate of mixed type I/II kerogen in relation to type I kerogen. δ13C of n-alkanes in liquid pyrolysates from the OS are isotopically lighter in comparison to bitumen, independently on kerogen type. Oppositely, in liquid pyrolysates from the CS, they become heavier than in bitumen, indicating the thermal influence on δ13C signatures, with more pronounced difference for type I kerogen.",
publisher = "Elsevier",
journal = "Marine and Petroleum Geology",
title = "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)",
volume = "136",
pages = "105383",
doi = "10.1016/j.marpetgeo.2021.105383"
}

Gajica, G., Šajnović, A., Stojanović, K. A., Schwarzbauer, J., Kostić, A.,& Jovančićević, B.. (2022). A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems). in Marine and Petroleum Geology
Elsevier., 136, 105383.
https://doi.org/10.1016/j.marpetgeo.2021.105383

Gajica G, Šajnović A, Stojanović KA, Schwarzbauer J, Kostić A, Jovančićević B. A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems). in Marine and Petroleum Geology. 2022;136:105383.
doi:10.1016/j.marpetgeo.2021.105383 .

Gajica, Gordana, Šajnović, Aleksandra, Stojanović, Ksenija A., Schwarzbauer, Jan, Kostić, Aleksandar, Jovančićević, Branimir, "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)" in Marine and Petroleum Geology, 136 (2022):105383,
https://doi.org/10.1016/j.marpetgeo.2021.105383 . .

TY  - DATA
AU  - Pržulj, Sanja
AU  - Radojičić, Ana
AU  - Kašanin-Grubin, Milica
AU  - Pešević, Dušica
AU  - Stojadinović, Sanja M.
AU  - Jovančićević, Branimir
AU  - Veselinović, Gorica
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5144
PB  - Beograd : Srpsko hemijsko društvo
T2  - Journal of the Serbian Chemical Society
T1  - Supplementary information for the article: Pržulj, S.; Radojičić, A.; Kašanin-Grubin, M.; Pešević, D.; Stojadinović, S.; Jovančićević, B.; Veselinović, G. Distribution and Provenance of Heavy Metals in Sediments of the Vrbas River, Bosnia and Herzegovina. Journal of the Serbian Chemical Society 2022. [https://doi.org/10.2298/JSC210608070P].
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5144
ER  - 

@misc{
author = "Pržulj, Sanja and Radojičić, Ana and Kašanin-Grubin, Milica and Pešević, Dušica and Stojadinović, Sanja M. and Jovančićević, Branimir and Veselinović, Gorica",
year = "2022",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Journal of the Serbian Chemical Society",
title = "Supplementary information for the article: Pržulj, S.; Radojičić, A.; Kašanin-Grubin, M.; Pešević, D.; Stojadinović, S.; Jovančićević, B.; Veselinović, G. Distribution and Provenance of Heavy Metals in Sediments of the Vrbas River, Bosnia and Herzegovina. Journal of the Serbian Chemical Society 2022. [https://doi.org/10.2298/JSC210608070P].",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5144"
}

Pržulj, S., Radojičić, A., Kašanin-Grubin, M., Pešević, D., Stojadinović, S. M., Jovančićević, B.,& Veselinović, G.. (2022). Supplementary information for the article: Pržulj, S.; Radojičić, A.; Kašanin-Grubin, M.; Pešević, D.; Stojadinović, S.; Jovančićević, B.; Veselinović, G. Distribution and Provenance of Heavy Metals in Sediments of the Vrbas River, Bosnia and Herzegovina. Journal of the Serbian Chemical Society 2022. [https://doi.org/10.2298/JSC210608070P].. in Journal of the Serbian Chemical Society
Beograd : Srpsko hemijsko društvo..
https://hdl.handle.net/21.15107/rcub_cherry_5144

Pržulj S, Radojičić A, Kašanin-Grubin M, Pešević D, Stojadinović SM, Jovančićević B, Veselinović G. Supplementary information for the article: Pržulj, S.; Radojičić, A.; Kašanin-Grubin, M.; Pešević, D.; Stojadinović, S.; Jovančićević, B.; Veselinović, G. Distribution and Provenance of Heavy Metals in Sediments of the Vrbas River, Bosnia and Herzegovina. Journal of the Serbian Chemical Society 2022. [https://doi.org/10.2298/JSC210608070P].. in Journal of the Serbian Chemical Society. 2022;.
https://hdl.handle.net/21.15107/rcub_cherry_5144 .

Pržulj, Sanja, Radojičić, Ana, Kašanin-Grubin, Milica, Pešević, Dušica, Stojadinović, Sanja M., Jovančićević, Branimir, Veselinović, Gorica, "Supplementary information for the article: Pržulj, S.; Radojičić, A.; Kašanin-Grubin, M.; Pešević, D.; Stojadinović, S.; Jovančićević, B.; Veselinović, G. Distribution and Provenance of Heavy Metals in Sediments of the Vrbas River, Bosnia and Herzegovina. Journal of the Serbian Chemical Society 2022. [https://doi.org/10.2298/JSC210608070P]." in Journal of the Serbian Chemical Society (2022),
https://hdl.handle.net/21.15107/rcub_cherry_5144 .

TY  - CONF
AU  - Gajica, G.
AU  - Šajnović, A.
AU  - Schwarzbauer, J.
AU  - Kostić, A.
AU  - Jovančićević, Branimir
AU  - Stojanović, Ksenija A.
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5190
AB  - The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined.

The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently on kerogen type. The LPs from the CS pyrolysis have the distributions of biomarkers similar to those in crude oils generated in an early to main stage of “oil window“. The biomarker data suggests that mixed type I/II kerogen attained slightly higher maturity level by the CS pyrolysis than type I kerogen. The isotopic signatures of n-alkanes in LPs obtained by the OS pyrolysis are isotopically lighter than in initial bitumen, independently on kerogen type, whereas in liquid products from the CS they become heavier; showing more pronounced difference for type I kerogen. The results indicate that δ13C data should be used with caution in interpretation of samples having different maturity and particularly of LPs obtained by different system pyrolysis.
PB  - European Association of Geoscientists & Engineers
C3  - Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021)
T1  - Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system).
VL  - 2021
DO  - 10.3997/2214-4609.202134040
ER  - 

@conference{
author = "Gajica, G. and Šajnović, A. and Schwarzbauer, J. and Kostić, A. and Jovančićević, Branimir and Stojanović, Ksenija A.",
year = "2021",
abstract = "The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined.

The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently on kerogen type. The LPs from the CS pyrolysis have the distributions of biomarkers similar to those in crude oils generated in an early to main stage of “oil window“. The biomarker data suggests that mixed type I/II kerogen attained slightly higher maturity level by the CS pyrolysis than type I kerogen. The isotopic signatures of n-alkanes in LPs obtained by the OS pyrolysis are isotopically lighter than in initial bitumen, independently on kerogen type, whereas in liquid products from the CS they become heavier; showing more pronounced difference for type I kerogen. The results indicate that δ13C data should be used with caution in interpretation of samples having different maturity and particularly of LPs obtained by different system pyrolysis.",
publisher = "European Association of Geoscientists & Engineers",
journal = "Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021)",
title = "Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system).",
volume = "2021",
doi = "10.3997/2214-4609.202134040"
}

Gajica, G., Šajnović, A., Schwarzbauer, J., Kostić, A., Jovančićević, B.,& Stojanović, K. A.. (2021). Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system).. in Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021)
European Association of Geoscientists & Engineers., 2021.
https://doi.org/10.3997/2214-4609.202134040

Gajica G, Šajnović A, Schwarzbauer J, Kostić A, Jovančićević B, Stojanović KA. Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system).. in Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021). 2021;2021.
doi:10.3997/2214-4609.202134040 .

Gajica, G., Šajnović, A., Schwarzbauer, J., Kostić, A., Jovančićević, Branimir, Stojanović, Ksenija A., "Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system)." in Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021), 2021 (2021),
https://doi.org/10.3997/2214-4609.202134040 . .

TY  - JOUR
AU  - Maletić, Snežana
AU  - Ivančev-Tumbas, Ivana
AU  - Brossas, Annie
AU  - Antonijević, Milan
AU  - Čáslavský, Josef
AU  - Jovančićević, Branimir
AU  - Matović, Zoran
AU  - Kongoli, Renata
AU  - MajlindaVasjari
AU  - Petrović, Maja
AU  - Andrejić, Nenad
AU  - Popov, Saša
AU  - Vesović, Nataša Ljubojević
AU  - Tabet, Jean-Claude
AU  - Warnet, Anna
AU  - Darko Anđelković
AU  - Gajica, Gordana
AU  - Anđelković, Tatjana
PY  - 2021
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4435
AB  - The paper briefly presents goals, activities, challenges, and outcomes of the NETCHEM project (http://www.netchem.ac.rs/) that was co-funded by the Erasmus+ Program of European Union (573885-EPP-1-2016-1-RS-EPPKA2- CBHE-JP). The project has been started in October 2016 and with extension lasted until April 2020. Western Balkan region has been targeted by upgrading capacities for education and research in environmental and food analysis in cooperation with partners from France, the UK, and Czech Republic. NETCHEM platform providing Web Accessed Remote Instrumental Analytical Laboratories (WARIAL) network, Database service and Open education system was created in order to improve the cooperation, educational, and research capacities of Higher Education Institutions involved, but also targeting whether audience not only from academic domain but from industry as well. The NETCHEM platform is free for access to public; thus, the external users to NETCHEM consortium can not only see its content but also actively participate, enter Database and WARIAL network, and upload their own educational/research material.
PB  - Springer
T2  - Environmental Science and Pollution Research
T2  - Environmental Science and Pollution ResearchEnviron Sci Pollut Res
T1  - Overview of Erasmus+ NETCHEM project: ICT networking for overcoming technical and social barriers in instrumental analytical chemistry education
VL  - 28
IS  - 2
SP  - 2479
EP  - 2483
DO  - 10.1007/s11356-020-11506-4
ER  - 

@article{
author = "Maletić, Snežana and Ivančev-Tumbas, Ivana and Brossas, Annie and Antonijević, Milan and Čáslavský, Josef and Jovančićević, Branimir and Matović, Zoran and Kongoli, Renata and MajlindaVasjari and Petrović, Maja and Andrejić, Nenad and Popov, Saša and Vesović, Nataša Ljubojević and Tabet, Jean-Claude and Warnet, Anna and Darko Anđelković and Gajica, Gordana and Anđelković, Tatjana",
year = "2021",
abstract = "The paper briefly presents goals, activities, challenges, and outcomes of the NETCHEM project (http://www.netchem.ac.rs/) that was co-funded by the Erasmus+ Program of European Union (573885-EPP-1-2016-1-RS-EPPKA2- CBHE-JP). The project has been started in October 2016 and with extension lasted until April 2020. Western Balkan region has been targeted by upgrading capacities for education and research in environmental and food analysis in cooperation with partners from France, the UK, and Czech Republic. NETCHEM platform providing Web Accessed Remote Instrumental Analytical Laboratories (WARIAL) network, Database service and Open education system was created in order to improve the cooperation, educational, and research capacities of Higher Education Institutions involved, but also targeting whether audience not only from academic domain but from industry as well. The NETCHEM platform is free for access to public; thus, the external users to NETCHEM consortium can not only see its content but also actively participate, enter Database and WARIAL network, and upload their own educational/research material.",
publisher = "Springer",
journal = "Environmental Science and Pollution Research, Environmental Science and Pollution ResearchEnviron Sci Pollut Res",
title = "Overview of Erasmus+ NETCHEM project: ICT networking for overcoming technical and social barriers in instrumental analytical chemistry education",
volume = "28",
number = "2",
pages = "2479-2483",
doi = "10.1007/s11356-020-11506-4"
}

Maletić, S., Ivančev-Tumbas, I., Brossas, A., Antonijević, M., Čáslavský, J., Jovančićević, B., Matović, Z., Kongoli, R., MajlindaVasjari, Petrović, M., Andrejić, N., Popov, S., Vesović, N. L., Tabet, J., Warnet, A., Darko Anđelković, Gajica, G.,& Anđelković, T.. (2021). Overview of Erasmus+ NETCHEM project: ICT networking for overcoming technical and social barriers in instrumental analytical chemistry education. in Environmental Science and Pollution Research
Springer., 28(2), 2479-2483.
https://doi.org/10.1007/s11356-020-11506-4

Maletić S, Ivančev-Tumbas I, Brossas A, Antonijević M, Čáslavský J, Jovančićević B, Matović Z, Kongoli R, MajlindaVasjari, Petrović M, Andrejić N, Popov S, Vesović NL, Tabet J, Warnet A, Darko Anđelković, Gajica G, Anđelković T. Overview of Erasmus+ NETCHEM project: ICT networking for overcoming technical and social barriers in instrumental analytical chemistry education. in Environmental Science and Pollution Research. 2021;28(2):2479-2483.
doi:10.1007/s11356-020-11506-4 .

Maletić, Snežana, Ivančev-Tumbas, Ivana, Brossas, Annie, Antonijević, Milan, Čáslavský, Josef, Jovančićević, Branimir, Matović, Zoran, Kongoli, Renata, MajlindaVasjari, Petrović, Maja, Andrejić, Nenad, Popov, Saša, Vesović, Nataša Ljubojević, Tabet, Jean-Claude, Warnet, Anna, Darko Anđelković, Gajica, Gordana, Anđelković, Tatjana, "Overview of Erasmus+ NETCHEM project: ICT networking for overcoming technical and social barriers in instrumental analytical chemistry education" in Environmental Science and Pollution Research, 28, no. 2 (2021):2479-2483,
https://doi.org/10.1007/s11356-020-11506-4 . .

TY  - JOUR
AU  - Burazer, Nikola
AU  - Šajnović, Aleksandra
AU  - Kašanin-Grubin, Milica
AU  - Radisavljević, Marija
AU  - Jovančićević, Branimir
PY  - 2021
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4563
AB  - The study investigated the influence of maturity, biomass type, and depositional settings on the distribution and relative abundance of polycyclic aromatic hydrocarbons (PAHs) for lacustrine sediments collected from depths up to 1000 m of Prebreza and Čučale stratigraphic units (the northwest part of the Toplica Basin). A recently proposed benzo[ghi]perylene/(perylene + benzo[ghi]perylene) parameter, along with commonly used Phenanthrene Alkylation Index and benzo[e]pyrene/(perylene + benzo[e]pyrene) indices, pointed out differences in maturity levels between stratigraphic units by displaying a positive linear relationship with vitrinite reflectance. However, in several immature Prebreza sediments, a substantial presence of algae and/or anoxic, mesosaline/hypersaline conditions were suitable for forming β-substituted methylphenanthrenes and 6-ring benzo[ghi]perylene. Generally, high molecular weight unsubstituted PAHs (HMWPAHs), particularly perylene, predominated Prebreza sediments. Anoxic conditions appeared to be decisive for accumulating and preserving the perylene carbon skeleton in studied stratigraphic units. Besides, more intense volcanism in the Čučale unit favored combustion processes, which prompted the accumulation of low molecular weight unsubstituted PAHs (LMWPAHs), especially phenanthrene. A general prevalence of retene over cadalene in Prebreza sediments, in which alginite and liptodetrinite predominated, implied algae as retene precursor. Selective degradation of retene or hindered demethylation of 9-methylphenanthrene under anoxic and more saline environmental settings had occurred notably in the Prebreza unit, which led to the formation of 1-methylphenanthrene and/or pimanthrene (1,7-dimethylphenanthrene). Čučale sediments with substantial amounts of vitrinite macerals or saturated diterpenoids had a predominant simonellite derived from conifers. Non-degraded and well-preserved Pinaceae conifers predominated in Prebreza sediments deposited under semi-arid climatic conditions, whereas mixed degraded/non-degraded conifers characterized Čučale sediments deposited in a wide range of climatic conditions, from semi-arid to semi-humid. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
PB  - Springer
T2  - Journal of Paleolimnology
T1  - Polycyclic aromatic hydrocarbons and their relationship to maturity and paleoenvironmental settings in lacustrine sediments of the Neogene Toplica Basin, Serbia
VL  - 66
IS  - 3
SP  - 187
EP  - 205
DO  - 10.1007/s10933-021-00199-5
ER  - 

@article{
author = "Burazer, Nikola and Šajnović, Aleksandra and Kašanin-Grubin, Milica and Radisavljević, Marija and Jovančićević, Branimir",
year = "2021",
abstract = "The study investigated the influence of maturity, biomass type, and depositional settings on the distribution and relative abundance of polycyclic aromatic hydrocarbons (PAHs) for lacustrine sediments collected from depths up to 1000 m of Prebreza and Čučale stratigraphic units (the northwest part of the Toplica Basin). A recently proposed benzo[ghi]perylene/(perylene + benzo[ghi]perylene) parameter, along with commonly used Phenanthrene Alkylation Index and benzo[e]pyrene/(perylene + benzo[e]pyrene) indices, pointed out differences in maturity levels between stratigraphic units by displaying a positive linear relationship with vitrinite reflectance. However, in several immature Prebreza sediments, a substantial presence of algae and/or anoxic, mesosaline/hypersaline conditions were suitable for forming β-substituted methylphenanthrenes and 6-ring benzo[ghi]perylene. Generally, high molecular weight unsubstituted PAHs (HMWPAHs), particularly perylene, predominated Prebreza sediments. Anoxic conditions appeared to be decisive for accumulating and preserving the perylene carbon skeleton in studied stratigraphic units. Besides, more intense volcanism in the Čučale unit favored combustion processes, which prompted the accumulation of low molecular weight unsubstituted PAHs (LMWPAHs), especially phenanthrene. A general prevalence of retene over cadalene in Prebreza sediments, in which alginite and liptodetrinite predominated, implied algae as retene precursor. Selective degradation of retene or hindered demethylation of 9-methylphenanthrene under anoxic and more saline environmental settings had occurred notably in the Prebreza unit, which led to the formation of 1-methylphenanthrene and/or pimanthrene (1,7-dimethylphenanthrene). Čučale sediments with substantial amounts of vitrinite macerals or saturated diterpenoids had a predominant simonellite derived from conifers. Non-degraded and well-preserved Pinaceae conifers predominated in Prebreza sediments deposited under semi-arid climatic conditions, whereas mixed degraded/non-degraded conifers characterized Čučale sediments deposited in a wide range of climatic conditions, from semi-arid to semi-humid. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.",
publisher = "Springer",
journal = "Journal of Paleolimnology",
title = "Polycyclic aromatic hydrocarbons and their relationship to maturity and paleoenvironmental settings in lacustrine sediments of the Neogene Toplica Basin, Serbia",
volume = "66",
number = "3",
pages = "187-205",
doi = "10.1007/s10933-021-00199-5"
}

Burazer, N., Šajnović, A., Kašanin-Grubin, M., Radisavljević, M.,& Jovančićević, B.. (2021). Polycyclic aromatic hydrocarbons and their relationship to maturity and paleoenvironmental settings in lacustrine sediments of the Neogene Toplica Basin, Serbia. in Journal of Paleolimnology
Springer., 66(3), 187-205.
https://doi.org/10.1007/s10933-021-00199-5

Burazer N, Šajnović A, Kašanin-Grubin M, Radisavljević M, Jovančićević B. Polycyclic aromatic hydrocarbons and their relationship to maturity and paleoenvironmental settings in lacustrine sediments of the Neogene Toplica Basin, Serbia. in Journal of Paleolimnology. 2021;66(3):187-205.
doi:10.1007/s10933-021-00199-5 .

Burazer, Nikola, Šajnović, Aleksandra, Kašanin-Grubin, Milica, Radisavljević, Marija, Jovančićević, Branimir, "Polycyclic aromatic hydrocarbons and their relationship to maturity and paleoenvironmental settings in lacustrine sediments of the Neogene Toplica Basin, Serbia" in Journal of Paleolimnology, 66, no. 3 (2021):187-205,
https://doi.org/10.1007/s10933-021-00199-5 . .

TY  - DATA
AU  - Burazer, Nikola
AU  - Šajnović, Aleksandra
AU  - Kašanin-Grubin, Milica
AU  - Radisavljević, Marija
AU  - Jovančićević, Branimir
PY  - 2021
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4564
PB  - Springer
T2  - Journal of Paleolimnology
T1  - Supplementary data for the article: Burazer, N.; Šajnović, A.; Kašanin-Grubin, M.; Radisavljević, M.; Jovančićević, B. Polycyclic Aromatic Hydrocarbons and Their Relationship to Maturity and Paleoenvironmental Settings in Lacustrine Sediments of the Neogene Toplica Basin, Serbia. Journal of Paleolimnology 2021, 66 (3), 187–205. https://doi.org/10.1007/s10933-021-00199-5.
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4564
ER  - 

@misc{
author = "Burazer, Nikola and Šajnović, Aleksandra and Kašanin-Grubin, Milica and Radisavljević, Marija and Jovančićević, Branimir",
year = "2021",
publisher = "Springer",
journal = "Journal of Paleolimnology",
title = "Supplementary data for the article: Burazer, N.; Šajnović, A.; Kašanin-Grubin, M.; Radisavljević, M.; Jovančićević, B. Polycyclic Aromatic Hydrocarbons and Their Relationship to Maturity and Paleoenvironmental Settings in Lacustrine Sediments of the Neogene Toplica Basin, Serbia. Journal of Paleolimnology 2021, 66 (3), 187–205. https://doi.org/10.1007/s10933-021-00199-5.",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4564"
}

Burazer, N., Šajnović, A., Kašanin-Grubin, M., Radisavljević, M.,& Jovančićević, B.. (2021). Supplementary data for the article: Burazer, N.; Šajnović, A.; Kašanin-Grubin, M.; Radisavljević, M.; Jovančićević, B. Polycyclic Aromatic Hydrocarbons and Their Relationship to Maturity and Paleoenvironmental Settings in Lacustrine Sediments of the Neogene Toplica Basin, Serbia. Journal of Paleolimnology 2021, 66 (3), 187–205. https://doi.org/10.1007/s10933-021-00199-5.. in Journal of Paleolimnology
Springer..
https://hdl.handle.net/21.15107/rcub_cherry_4564

Burazer N, Šajnović A, Kašanin-Grubin M, Radisavljević M, Jovančićević B. Supplementary data for the article: Burazer, N.; Šajnović, A.; Kašanin-Grubin, M.; Radisavljević, M.; Jovančićević, B. Polycyclic Aromatic Hydrocarbons and Their Relationship to Maturity and Paleoenvironmental Settings in Lacustrine Sediments of the Neogene Toplica Basin, Serbia. Journal of Paleolimnology 2021, 66 (3), 187–205. https://doi.org/10.1007/s10933-021-00199-5.. in Journal of Paleolimnology. 2021;.
https://hdl.handle.net/21.15107/rcub_cherry_4564 .

Burazer, Nikola, Šajnović, Aleksandra, Kašanin-Grubin, Milica, Radisavljević, Marija, Jovančićević, Branimir, "Supplementary data for the article: Burazer, N.; Šajnović, A.; Kašanin-Grubin, M.; Radisavljević, M.; Jovančićević, B. Polycyclic Aromatic Hydrocarbons and Their Relationship to Maturity and Paleoenvironmental Settings in Lacustrine Sediments of the Neogene Toplica Basin, Serbia. Journal of Paleolimnology 2021, 66 (3), 187–205. https://doi.org/10.1007/s10933-021-00199-5." in Journal of Paleolimnology (2021),
https://hdl.handle.net/21.15107/rcub_cherry_4564 .

TY  - JOUR
AU  - Burazer, Nikola
AU  - Šajnović, Aleksandra
AU  - Kašanin-Grubin, Milica
AU  - Gajica, Gordana
AU  - Orlić, Jovana
AU  - Radisavljević, Marija
AU  - Jovančićević, Branimir
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4814
AB  - The study investigates the influence of alluvial-lacustrine processes and paleoclimate variations on the distribution of terpenoids and unsubstituted Polycyclic Aromatic Hydrocarbons (PAHs). The XRF, ICP-MS, Rock-Eval, and organic geochemical analyses were employed to investigate thirty Lower and Middle Miocene sedimentary samples from the Prebreza and Čučale formations, collected from boreholes BL3 and BL5, situated in the central part of the Toplica Basin (Serbia). The development of the studied basin part was influenced by alluvial-lacustrine processes, which affected the type of organic matter (OM) and the paleoenvironment. Sandy silt and gravel layers in the profile of the BL3 borehole indicate the contribution of thicker clasts brought by rivers. In the BL5 borehole, there are fine-grained intrabasinal lacustrine sediments in the lower part, and swamp sediments in the upper part. The lowest total organic carbon (TOC) content is in alluvial sediments of BL3 and some lacustrine sediments of BL5. Based on Hydrogen Index (HI) and C/N ratio, various mixtures of terrigenous and algal organic matter are present in the sediments, while an increase in the proportion of terrestrial organic matter with higher HI (Type II kerogen) is recorded in upper parts of both boreholes, which may be related to paleoclimatic changes. Based on Tmax, the OM is immature and/or in the initial stage of maturity. The presence of plant terpenoids and unsubstituted PAHs, which reflected paleoflora and paleoclimate changes, was associated with the suggestion of predominating Type III kerogen in the studied sediments. Various factors influenced the application of gymnosperms/angiosperms parameters. For instance, the progressive aromatization of triterpenoids occurred in the BL5, whereas the process was hindered in the upper part of the BL3, probably as a result of high sedimentation rates. Based on C-value, Sr/Cu, and Rb/Sr ratios, during the deposition of the Lower and Middle Miocene formations of Čučale and Prebreza, a warm and humid climate prevailed, reflecting the Middle Miocene Climatic Optimum (MMCO). The production of unsubstituted PAHs in the studied samples probably relates to paleo-wildfires, anoxic conditions, or the presence of specific biomass precursors. © 2021 Sciendo. All rights reserved.
PB  - Library of the Earth Science Institute, Slovak Academy of Sciences
T2  - Geologica Carpathica
T1  - Early–Middle Miocene paleoenvironmental and paleoclimate changes in the Toplica Basin (Serbia) inferred from plant biomarkers, biochemical and elemental geochemical proxies
VL  - 72
IS  - 5
SP  - 406
EP  - 424
DO  - 10.31577/GeolCarp.72.5.4
ER  - 

@article{
author = "Burazer, Nikola and Šajnović, Aleksandra and Kašanin-Grubin, Milica and Gajica, Gordana and Orlić, Jovana and Radisavljević, Marija and Jovančićević, Branimir",
year = "2021",
abstract = "The study investigates the influence of alluvial-lacustrine processes and paleoclimate variations on the distribution of terpenoids and unsubstituted Polycyclic Aromatic Hydrocarbons (PAHs). The XRF, ICP-MS, Rock-Eval, and organic geochemical analyses were employed to investigate thirty Lower and Middle Miocene sedimentary samples from the Prebreza and Čučale formations, collected from boreholes BL3 and BL5, situated in the central part of the Toplica Basin (Serbia). The development of the studied basin part was influenced by alluvial-lacustrine processes, which affected the type of organic matter (OM) and the paleoenvironment. Sandy silt and gravel layers in the profile of the BL3 borehole indicate the contribution of thicker clasts brought by rivers. In the BL5 borehole, there are fine-grained intrabasinal lacustrine sediments in the lower part, and swamp sediments in the upper part. The lowest total organic carbon (TOC) content is in alluvial sediments of BL3 and some lacustrine sediments of BL5. Based on Hydrogen Index (HI) and C/N ratio, various mixtures of terrigenous and algal organic matter are present in the sediments, while an increase in the proportion of terrestrial organic matter with higher HI (Type II kerogen) is recorded in upper parts of both boreholes, which may be related to paleoclimatic changes. Based on Tmax, the OM is immature and/or in the initial stage of maturity. The presence of plant terpenoids and unsubstituted PAHs, which reflected paleoflora and paleoclimate changes, was associated with the suggestion of predominating Type III kerogen in the studied sediments. Various factors influenced the application of gymnosperms/angiosperms parameters. For instance, the progressive aromatization of triterpenoids occurred in the BL5, whereas the process was hindered in the upper part of the BL3, probably as a result of high sedimentation rates. Based on C-value, Sr/Cu, and Rb/Sr ratios, during the deposition of the Lower and Middle Miocene formations of Čučale and Prebreza, a warm and humid climate prevailed, reflecting the Middle Miocene Climatic Optimum (MMCO). The production of unsubstituted PAHs in the studied samples probably relates to paleo-wildfires, anoxic conditions, or the presence of specific biomass precursors. © 2021 Sciendo. All rights reserved.",
publisher = "Library of the Earth Science Institute, Slovak Academy of Sciences",
journal = "Geologica Carpathica",
title = "Early–Middle Miocene paleoenvironmental and paleoclimate changes in the Toplica Basin (Serbia) inferred from plant biomarkers, biochemical and elemental geochemical proxies",
volume = "72",
number = "5",
pages = "406-424",
doi = "10.31577/GeolCarp.72.5.4"
}

Burazer, N., Šajnović, A., Kašanin-Grubin, M., Gajica, G., Orlić, J., Radisavljević, M.,& Jovančićević, B.. (2021). Early–Middle Miocene paleoenvironmental and paleoclimate changes in the Toplica Basin (Serbia) inferred from plant biomarkers, biochemical and elemental geochemical proxies. in Geologica Carpathica
Library of the Earth Science Institute, Slovak Academy of Sciences., 72(5), 406-424.
https://doi.org/10.31577/GeolCarp.72.5.4

Burazer N, Šajnović A, Kašanin-Grubin M, Gajica G, Orlić J, Radisavljević M, Jovančićević B. Early–Middle Miocene paleoenvironmental and paleoclimate changes in the Toplica Basin (Serbia) inferred from plant biomarkers, biochemical and elemental geochemical proxies. in Geologica Carpathica. 2021;72(5):406-424.
doi:10.31577/GeolCarp.72.5.4 .

Burazer, Nikola, Šajnović, Aleksandra, Kašanin-Grubin, Milica, Gajica, Gordana, Orlić, Jovana, Radisavljević, Marija, Jovančićević, Branimir, "Early–Middle Miocene paleoenvironmental and paleoclimate changes in the Toplica Basin (Serbia) inferred from plant biomarkers, biochemical and elemental geochemical proxies" in Geologica Carpathica, 72, no. 5 (2021):406-424,
https://doi.org/10.31577/GeolCarp.72.5.4 . .

TY  - JOUR
AU  - Stojadinović, Sanja M.
AU  - Jovančićević, Branimir
AU  - Šajnović, Aleksandra
AU  - Golumbenau, Mariana
AU  - Almasan, Roxana
AU  - Jovanović, Đorđe
AU  - Brčeski, Ilija
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4898
AB  - The Techirghiol Lake, located on the Romanian coast of the Black Sea, is a hypersaline lake. In this environment, a unique ecosystem in Europe has developed with the specific capacity of producing mud by the decomposition of flora and fauna under the microbial activity (saprogenic sludge), which is used for therapeutic purposes.In this study, hydrocarbon compositions of the Techirghiol Lake mud are investigated in order to determine the origin and type of organic matter (OM). All samples are characterized by a high abundance of n-alkanes, short and high chain alkenes, pimarane, phyllocladane, indicating that OM was mainly derived from phytoplankton, filamentous green alga Cladophora vagabunda, Cyanobacteria, submerged/floating macrophytes, terrestrial and emergent plants. The terrestrial origin of organic matter is probably related to a significant input by wind or rivers. Typical oil distributions of terpanes and steranes biomarkers clearly indicate that the muds of Techirghiol Lake, in addition to native organic matter, contain a relatively low contribution of petroleum type pollutants, as well as PAH compounds of pyrogenic origin. The relatively high abundance of 1-chloroalkenes, which in some samples represent the most abundant compounds in the total distribution of hydrocarbons, together with isoprenoid thiophenes indicate the local presence of significant amounts of chloride and sulphur species in the water column or surface sediment.
PB  - Parlar Scientific Publications
T2  - Fresenius Environmental Bulletin
T1  - Organic-geochemical characteristics of the mud from the Techirghiol Lake, Romania
VL  - 30
SP  - 1595
SP  - 1607
EP  - 1607
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4898
ER  - 

@article{
author = "Stojadinović, Sanja M. and Jovančićević, Branimir and Šajnović, Aleksandra and Golumbenau, Mariana and Almasan, Roxana and Jovanović, Đorđe and Brčeski, Ilija",
year = "2021",
abstract = "The Techirghiol Lake, located on the Romanian coast of the Black Sea, is a hypersaline lake. In this environment, a unique ecosystem in Europe has developed with the specific capacity of producing mud by the decomposition of flora and fauna under the microbial activity (saprogenic sludge), which is used for therapeutic purposes.In this study, hydrocarbon compositions of the Techirghiol Lake mud are investigated in order to determine the origin and type of organic matter (OM). All samples are characterized by a high abundance of n-alkanes, short and high chain alkenes, pimarane, phyllocladane, indicating that OM was mainly derived from phytoplankton, filamentous green alga Cladophora vagabunda, Cyanobacteria, submerged/floating macrophytes, terrestrial and emergent plants. The terrestrial origin of organic matter is probably related to a significant input by wind or rivers. Typical oil distributions of terpanes and steranes biomarkers clearly indicate that the muds of Techirghiol Lake, in addition to native organic matter, contain a relatively low contribution of petroleum type pollutants, as well as PAH compounds of pyrogenic origin. The relatively high abundance of 1-chloroalkenes, which in some samples represent the most abundant compounds in the total distribution of hydrocarbons, together with isoprenoid thiophenes indicate the local presence of significant amounts of chloride and sulphur species in the water column or surface sediment.",
publisher = "Parlar Scientific Publications",
journal = "Fresenius Environmental Bulletin",
title = "Organic-geochemical characteristics of the mud from the Techirghiol Lake, Romania",
volume = "30",
pages = "1595-1607-1607",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4898"
}

Stojadinović, S. M., Jovančićević, B., Šajnović, A., Golumbenau, M., Almasan, R., Jovanović, Đ.,& Brčeski, I.. (2021). Organic-geochemical characteristics of the mud from the Techirghiol Lake, Romania. in Fresenius Environmental Bulletin
Parlar Scientific Publications., 30, 1595-1607.
https://hdl.handle.net/21.15107/rcub_cherry_4898

Stojadinović SM, Jovančićević B, Šajnović A, Golumbenau M, Almasan R, Jovanović Đ, Brčeski I. Organic-geochemical characteristics of the mud from the Techirghiol Lake, Romania. in Fresenius Environmental Bulletin. 2021;30:1595-1607.
https://hdl.handle.net/21.15107/rcub_cherry_4898 .

Stojadinović, Sanja M., Jovančićević, Branimir, Šajnović, Aleksandra, Golumbenau, Mariana, Almasan, Roxana, Jovanović, Đorđe, Brčeski, Ilija, "Organic-geochemical characteristics of the mud from the Techirghiol Lake, Romania" in Fresenius Environmental Bulletin, 30 (2021):1595-1607,
https://hdl.handle.net/21.15107/rcub_cherry_4898 .

TY  - CONF
AU  - Stefanović, M.
AU  - Jovančićević, Branimir
AU  - Šajnović, A.
AU  - Gallart, F.
AU  - Moreno-de las Heras, M.
AU  - Antić, N.
AU  - Kašanin-Grubin, Milica
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4908
AB  - Badlands are areas with limited vegetation, reduced or no human activity, and a great variety of geomorphic processes [1]. Badland materials have a different responsetothe same environmental conditions, because of differences in their mineralogical and physico-chemical characteristics. Many studies show that smectite-poorsediments are more resistant to different weathering treatments of freezing, thawing, wetting, and drying,than smectite-rich materials [2,3].In this paper, three unweathered samples of badlands from Spain were analyzed with the aim of monitoring, but also comparing physico-chemical changes caused by simulations of changes in climatic conditions. Selectedsediment samples havedifferent compositions. Besides quartz and calcite, the first sampleis composed of smectite and gypsum (3 UW), the second of smectite (4 UW), while the third sample is composed of neither smectite nor gypsum (5 UW). The experiment setup was designed in the way that each sample had three sub-samples, a sample for simulation of rain, snow, and a control sample (Figure 1). Sample_rain was treated with a rain intensity of ~850 ml/h for 10 minutes (~140 ml), while sample_snow was treated with crushed ice (~150 g). After precipitation simulations snow were put samples were placed in a climate chamber at - 3 °C together with a control sample. This was repeated for 15 cycles. Every cycle was documented with photographs. The leached solution was collected and its volume, pH, electrical conductivity (EC), and ion concentrations were measured. The second part of the experiment was based on exposing the samples after wetting to higher temperatures, 50 ° C. It was done in 8 cycles. FESEM and BET analyzes were performed for each sample before and after the experiments.The 3 UW samples had significantly different leachate pH and EC, while the leachate volume was similar for all samples during the experiment. Sulphate ions were leached in the highest concentrations during the whole experiment from the sample with both smectite and gypsum present. The sample with smectite has shown the highest disintegration of the structure, especially after the simulation of snow. The sample with smectite and gypsum has shown a lower degree of degradation than sample 3 UW due to the content of gypsum which increases the weathering resistance of the material. Sample 5 UW has shown the lowest degradation of the structure along with the weathering cycles. This study has proven that both mineralogical and physico-chemical properties of sediments are important for predicting their response to variable climate factors.
PB  - Belgrade : Serbian Chemical Society
C3  - Book of Abstracts 21st; European Meeting on Environmental Chemistry
T1  - The Response of Badland Materials from Spain with Different Mineralogical Content on Seasonal Changes
SP  - 52
EP  - 52
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4908
ER  - 

@conference{
author = "Stefanović, M. and Jovančićević, Branimir and Šajnović, A. and Gallart, F. and Moreno-de las Heras, M. and Antić, N. and Kašanin-Grubin, Milica",
year = "2021",
abstract = "Badlands are areas with limited vegetation, reduced or no human activity, and a great variety of geomorphic processes [1]. Badland materials have a different responsetothe same environmental conditions, because of differences in their mineralogical and physico-chemical characteristics. Many studies show that smectite-poorsediments are more resistant to different weathering treatments of freezing, thawing, wetting, and drying,than smectite-rich materials [2,3].In this paper, three unweathered samples of badlands from Spain were analyzed with the aim of monitoring, but also comparing physico-chemical changes caused by simulations of changes in climatic conditions. Selectedsediment samples havedifferent compositions. Besides quartz and calcite, the first sampleis composed of smectite and gypsum (3 UW), the second of smectite (4 UW), while the third sample is composed of neither smectite nor gypsum (5 UW). The experiment setup was designed in the way that each sample had three sub-samples, a sample for simulation of rain, snow, and a control sample (Figure 1). Sample_rain was treated with a rain intensity of ~850 ml/h for 10 minutes (~140 ml), while sample_snow was treated with crushed ice (~150 g). After precipitation simulations snow were put samples were placed in a climate chamber at - 3 °C together with a control sample. This was repeated for 15 cycles. Every cycle was documented with photographs. The leached solution was collected and its volume, pH, electrical conductivity (EC), and ion concentrations were measured. The second part of the experiment was based on exposing the samples after wetting to higher temperatures, 50 ° C. It was done in 8 cycles. FESEM and BET analyzes were performed for each sample before and after the experiments.The 3 UW samples had significantly different leachate pH and EC, while the leachate volume was similar for all samples during the experiment. Sulphate ions were leached in the highest concentrations during the whole experiment from the sample with both smectite and gypsum present. The sample with smectite has shown the highest disintegration of the structure, especially after the simulation of snow. The sample with smectite and gypsum has shown a lower degree of degradation than sample 3 UW due to the content of gypsum which increases the weathering resistance of the material. Sample 5 UW has shown the lowest degradation of the structure along with the weathering cycles. This study has proven that both mineralogical and physico-chemical properties of sediments are important for predicting their response to variable climate factors.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Book of Abstracts 21st; European Meeting on Environmental Chemistry",
title = "The Response of Badland Materials from Spain with Different Mineralogical Content on Seasonal Changes",
pages = "52-52",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4908"
}

Stefanović, M., Jovančićević, B., Šajnović, A., Gallart, F., Moreno-de las Heras, M., Antić, N.,& Kašanin-Grubin, M.. (2021). The Response of Badland Materials from Spain with Different Mineralogical Content on Seasonal Changes. in Book of Abstracts 21st; European Meeting on Environmental Chemistry
Belgrade : Serbian Chemical Society., 52-52.
https://hdl.handle.net/21.15107/rcub_cherry_4908

Stefanović M, Jovančićević B, Šajnović A, Gallart F, Moreno-de las Heras M, Antić N, Kašanin-Grubin M. The Response of Badland Materials from Spain with Different Mineralogical Content on Seasonal Changes. in Book of Abstracts 21st; European Meeting on Environmental Chemistry. 2021;:52-52.
https://hdl.handle.net/21.15107/rcub_cherry_4908 .

Stefanović, M., Jovančićević, Branimir, Šajnović, A., Gallart, F., Moreno-de las Heras, M., Antić, N., Kašanin-Grubin, Milica, "The Response of Badland Materials from Spain with Different Mineralogical Content on Seasonal Changes" in Book of Abstracts 21st; European Meeting on Environmental Chemistry (2021):52-52,
https://hdl.handle.net/21.15107/rcub_cherry_4908 .

TY  - CONF
AU  - Sojadinović, S.
AU  - Veselinović, G.
AU  - Pržulj, S.
AU  - Šajnović, A.
AU  - Gajica, Gordana
AU  - Štrbac, S.
AU  - Jovančićević, Branimir
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4922
AB  - The Vrbas River is an important river ecosystem in Bosnia and Herzegovina with a length of 250 km and catchment areas of 5900 km2 . Before reaching Banja Luka, the Vrbas River passes through a canyon and numerous gorges, which are from 1955 protected by the Law on the Protection of Natural Values. This river flows through many towns and villages along the entire course, but the main anthropogenic influence comes from Banja Luka, one of the largest cities in Bosnia and Herzegovina.The aim of this research was to characterise extractable organic matter of sediments from the Vrbas River in the city area of Banja Luka. Six samples were collected at locations which were selected based on the vicinity of potential sources of anthropogenic pollution: 1 and 3 – sites near bridge and frequent traffic, 2 – city’s promenade, 6 – site in the vicinity of the thermal power plant, 7 – site close to Banja Luka Brewery and the bridge on frequent road, and 8 – site close to the food industry “Vitaminka”. Extractable organic matter was isolated with dichloromethane/ methanol mixture using a Soxhlet apparatus. Hydrocarbons were isolated from the extracts using a column chromatography and analyzed by gas chromatography – mass spectrometry (GC-MS). Detailed analysis of n-alkanes (m/z 71), diterpanes (m/z 123), hopanes (m/z 191) and steranes (m/z 217) was done. The individual peaks were identified by comparison with literature data [1] and based on their mass spectra (library: NIST11). Among saturated hydrocarbons diterpane, 16α(H)phyllocladane is the most dominant component in almost all samples (Fig.1). The exception is a sample 7. This diterpane is followed by n-alkanes with a predominance of higher odd homologues.  It indicates predominately native organic matter of Vrbas river sediments, originated mostly from terrestrial plants. That was noticed the predominant presence of native organic material in noticed in samples 2, 3, 6, while the presence of oil type pollutants was confirmed in other samples (1, 7, 8), which are near the bridge and frequent traffic roads. Fig 1. Total ion current (TIC) of saturated fraction. The previous study regarding the contents distribution of heavy metals in these sediments showed that most contaminated samples are at sampling points 2 and 6 [2]. That is not the case with oil contamination pointing to probably different sources of anthropogenic pollution.
PB  - Belgrade : Serbian Chemical Society
C3  - Book of Abstracts 21st; European Meeting on Environmental Chemistry
T1  - Determination of Extractable Organic Matter Type from Urban Sediments of Vrbas River (Banja Luka, Bosnia and Herzegovina)
SP  - 138
EP  - 138
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4922
ER  - 

@conference{
author = "Sojadinović, S. and Veselinović, G. and Pržulj, S. and Šajnović, A. and Gajica, Gordana and Štrbac, S. and Jovančićević, Branimir",
year = "2021",
abstract = "The Vrbas River is an important river ecosystem in Bosnia and Herzegovina with a length of 250 km and catchment areas of 5900 km2 . Before reaching Banja Luka, the Vrbas River passes through a canyon and numerous gorges, which are from 1955 protected by the Law on the Protection of Natural Values. This river flows through many towns and villages along the entire course, but the main anthropogenic influence comes from Banja Luka, one of the largest cities in Bosnia and Herzegovina.The aim of this research was to characterise extractable organic matter of sediments from the Vrbas River in the city area of Banja Luka. Six samples were collected at locations which were selected based on the vicinity of potential sources of anthropogenic pollution: 1 and 3 – sites near bridge and frequent traffic, 2 – city’s promenade, 6 – site in the vicinity of the thermal power plant, 7 – site close to Banja Luka Brewery and the bridge on frequent road, and 8 – site close to the food industry “Vitaminka”. Extractable organic matter was isolated with dichloromethane/ methanol mixture using a Soxhlet apparatus. Hydrocarbons were isolated from the extracts using a column chromatography and analyzed by gas chromatography – mass spectrometry (GC-MS). Detailed analysis of n-alkanes (m/z 71), diterpanes (m/z 123), hopanes (m/z 191) and steranes (m/z 217) was done. The individual peaks were identified by comparison with literature data [1] and based on their mass spectra (library: NIST11). Among saturated hydrocarbons diterpane, 16α(H)phyllocladane is the most dominant component in almost all samples (Fig.1). The exception is a sample 7. This diterpane is followed by n-alkanes with a predominance of higher odd homologues.  It indicates predominately native organic matter of Vrbas river sediments, originated mostly from terrestrial plants. That was noticed the predominant presence of native organic material in noticed in samples 2, 3, 6, while the presence of oil type pollutants was confirmed in other samples (1, 7, 8), which are near the bridge and frequent traffic roads. Fig 1. Total ion current (TIC) of saturated fraction. The previous study regarding the contents distribution of heavy metals in these sediments showed that most contaminated samples are at sampling points 2 and 6 [2]. That is not the case with oil contamination pointing to probably different sources of anthropogenic pollution.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Book of Abstracts 21st; European Meeting on Environmental Chemistry",
title = "Determination of Extractable Organic Matter Type from Urban Sediments of Vrbas River (Banja Luka, Bosnia and Herzegovina)",
pages = "138-138",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4922"
}

Sojadinović, S., Veselinović, G., Pržulj, S., Šajnović, A., Gajica, G., Štrbac, S.,& Jovančićević, B.. (2021). Determination of Extractable Organic Matter Type from Urban Sediments of Vrbas River (Banja Luka, Bosnia and Herzegovina). in Book of Abstracts 21st; European Meeting on Environmental Chemistry
Belgrade : Serbian Chemical Society., 138-138.
https://hdl.handle.net/21.15107/rcub_cherry_4922

Sojadinović S, Veselinović G, Pržulj S, Šajnović A, Gajica G, Štrbac S, Jovančićević B. Determination of Extractable Organic Matter Type from Urban Sediments of Vrbas River (Banja Luka, Bosnia and Herzegovina). in Book of Abstracts 21st; European Meeting on Environmental Chemistry. 2021;:138-138.
https://hdl.handle.net/21.15107/rcub_cherry_4922 .

Sojadinović, S., Veselinović, G., Pržulj, S., Šajnović, A., Gajica, Gordana, Štrbac, S., Jovančićević, Branimir, "Determination of Extractable Organic Matter Type from Urban Sediments of Vrbas River (Banja Luka, Bosnia and Herzegovina)" in Book of Abstracts 21st; European Meeting on Environmental Chemistry (2021):138-138,
https://hdl.handle.net/21.15107/rcub_cherry_4922 .

TY  - CONF
AU  - Stefanović, M.
AU  - Mijatović, N.
AU  - Kašanin-Grubin, Milica
AU  - Veselinović, G.
AU  - Stojadinović, S.
AU  - Jovančićević, Branimir
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4924
AB  - Badlands are areas with scarce or completely absent vegetation formed in a wide range of lithologies in different climate conditions and exposed to a wide range of geomorphological processes [1]. Generally, rapid evolution governed by erosion processes is a consequence of complex mineralogical and physico-chemical sediment composition and climate conditions. Because of that, badlands are often described as natural field laboratories and, furthermore, badland material is suitable for laboratory experiments that can, in controlled conditions, provide insight of changes that occur in the field. As indicated above, beside lithology, climate is one of the most significant factors in badlands forming. Since human activities have great impact on the environment and since climate changes present one of the biggest environmental pollution problems nowadays, in this research badland material was exposed to different conditions with the aim of monitoring changes caused by extreme climate conditions and acid ice. Three samples from badlands in China organized in six sets were treated with ice (representing snow) and acid ice (frozen acid rain) during fifteen cycles, dried in the oven for three cycles and afterwards again threated with ice and acid ice for additional five cycles. After each cycle samples were photographed, so that physical changes can be tracked, while leachate was collected and analyzed for monitoring changes in its volume, pH, electrical conductivity (EC) and cation concentration. Beside slight oscillations in parameters through cycles of samples treated with acid ice, extreme changes in observed parameters were not noticed neither between samples, nor between treatments. Leachate EC were a bit higher in samples treated with ice, leachate volume was higher for samples treated with acid ice, while pH was similar in both cases. Cation concentrations are similar in the leachate of all tested samples. In most of cases, the highest concentrations were measured at the beginning of the experiment, during the first two cycles or during the first “ice” cycles after drying. This indicates the high cation concentrations originate from the sediment surface or washing along the crack that appeared after drying. Physical changes that occurred through cycles implied that heat/drought is more aggressive agent of sediment decay. Decay caused by ice is slower, not as aggressive as drought, but not negligible, causing noticeable and significant cracks and fissures of fragments.  This experiment confirmed that drought has high impact on sediment weathering, but more importantly, pointed out the impact of ice and its thawing, opening new questions about climate impact on forming, erosion processes and evolution of badlands which need to be further examined.
PB  - Belgrade : Serbian Chemical Society
C3  - Book of Abstracts 21st; European Meeting on Environmental Chemistry
T1  - Anthropogenic and Climate Influence on Land Degradation
SP  - 141
EP  - 141
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4924
ER  - 

@conference{
author = "Stefanović, M. and Mijatović, N. and Kašanin-Grubin, Milica and Veselinović, G. and Stojadinović, S. and Jovančićević, Branimir",
year = "2021",
abstract = "Badlands are areas with scarce or completely absent vegetation formed in a wide range of lithologies in different climate conditions and exposed to a wide range of geomorphological processes [1]. Generally, rapid evolution governed by erosion processes is a consequence of complex mineralogical and physico-chemical sediment composition and climate conditions. Because of that, badlands are often described as natural field laboratories and, furthermore, badland material is suitable for laboratory experiments that can, in controlled conditions, provide insight of changes that occur in the field. As indicated above, beside lithology, climate is one of the most significant factors in badlands forming. Since human activities have great impact on the environment and since climate changes present one of the biggest environmental pollution problems nowadays, in this research badland material was exposed to different conditions with the aim of monitoring changes caused by extreme climate conditions and acid ice. Three samples from badlands in China organized in six sets were treated with ice (representing snow) and acid ice (frozen acid rain) during fifteen cycles, dried in the oven for three cycles and afterwards again threated with ice and acid ice for additional five cycles. After each cycle samples were photographed, so that physical changes can be tracked, while leachate was collected and analyzed for monitoring changes in its volume, pH, electrical conductivity (EC) and cation concentration. Beside slight oscillations in parameters through cycles of samples treated with acid ice, extreme changes in observed parameters were not noticed neither between samples, nor between treatments. Leachate EC were a bit higher in samples treated with ice, leachate volume was higher for samples treated with acid ice, while pH was similar in both cases. Cation concentrations are similar in the leachate of all tested samples. In most of cases, the highest concentrations were measured at the beginning of the experiment, during the first two cycles or during the first “ice” cycles after drying. This indicates the high cation concentrations originate from the sediment surface or washing along the crack that appeared after drying. Physical changes that occurred through cycles implied that heat/drought is more aggressive agent of sediment decay. Decay caused by ice is slower, not as aggressive as drought, but not negligible, causing noticeable and significant cracks and fissures of fragments.  This experiment confirmed that drought has high impact on sediment weathering, but more importantly, pointed out the impact of ice and its thawing, opening new questions about climate impact on forming, erosion processes and evolution of badlands which need to be further examined.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Book of Abstracts 21st; European Meeting on Environmental Chemistry",
title = "Anthropogenic and Climate Influence on Land Degradation",
pages = "141-141",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4924"
}

Stefanović, M., Mijatović, N., Kašanin-Grubin, M., Veselinović, G., Stojadinović, S.,& Jovančićević, B.. (2021). Anthropogenic and Climate Influence on Land Degradation. in Book of Abstracts 21st; European Meeting on Environmental Chemistry
Belgrade : Serbian Chemical Society., 141-141.
https://hdl.handle.net/21.15107/rcub_cherry_4924

Stefanović M, Mijatović N, Kašanin-Grubin M, Veselinović G, Stojadinović S, Jovančićević B. Anthropogenic and Climate Influence on Land Degradation. in Book of Abstracts 21st; European Meeting on Environmental Chemistry. 2021;:141-141.
https://hdl.handle.net/21.15107/rcub_cherry_4924 .

Stefanović, M., Mijatović, N., Kašanin-Grubin, Milica, Veselinović, G., Stojadinović, S., Jovančićević, Branimir, "Anthropogenic and Climate Influence on Land Degradation" in Book of Abstracts 21st; European Meeting on Environmental Chemistry (2021):141-141,
https://hdl.handle.net/21.15107/rcub_cherry_4924 .

TY  - JOUR
AU  - Đokić, Jovana
AU  - Jovančićević, Branimir
AU  - Brčeski, Ilija
AU  - Ranitović, Milisav
AU  - Gajić, Nataša
AU  - Kamberović, Željko
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4276
AB  - Anode slime and tin precipitate as by-products of the electrorefining (ER) of non-standard anodes obtained after experimental smelting of waste electric and electronic equipment (e-waste), in addition to the base and precious metals, contains a significant amount of tin. Due to its presence as inert SnO2 hydrate (β metastannic acid) and its dissipation between slime and electrolyte, anode slime processing and metals valorization are difficult. This study aimed to investigate conditions under which efficient leaching of metastannic acid could be achieved to facilitate further metals valorization, especially precious metals. The investigation was performed using the by-products obtained from the ER of the non-standard Cu anodes produced by pyrometallurgical processing of e-waste. After detailed characterization of obtained products, the influence of various process parameters like temperature, acid concentration, leaching time, as well as the influence of reducing agent, sulfur compounds, and SnO2 hydration rate on leaching efficiency was investigated. It was found that efficiency of 99% can be achieved by leaching the desulfurized tin precipitate sample in 6 M HCl at 90 °C for 90 min with the addition of Mg powder. The application of the tin removal process, described in this paper, contributes to efficient material flow management.
PB  - Springer
T2  - Journal of Material Cycles and Waste Management
T1  - Leaching of metastannic acid from e-waste by-products
VL  - 22
IS  - 6
SP  - 1899
EP  - 1912
DO  - 10.1007/s10163-020-01076-5
ER  - 

@article{
author = "Đokić, Jovana and Jovančićević, Branimir and Brčeski, Ilija and Ranitović, Milisav and Gajić, Nataša and Kamberović, Željko",
year = "2020",
abstract = "Anode slime and tin precipitate as by-products of the electrorefining (ER) of non-standard anodes obtained after experimental smelting of waste electric and electronic equipment (e-waste), in addition to the base and precious metals, contains a significant amount of tin. Due to its presence as inert SnO2 hydrate (β metastannic acid) and its dissipation between slime and electrolyte, anode slime processing and metals valorization are difficult. This study aimed to investigate conditions under which efficient leaching of metastannic acid could be achieved to facilitate further metals valorization, especially precious metals. The investigation was performed using the by-products obtained from the ER of the non-standard Cu anodes produced by pyrometallurgical processing of e-waste. After detailed characterization of obtained products, the influence of various process parameters like temperature, acid concentration, leaching time, as well as the influence of reducing agent, sulfur compounds, and SnO2 hydration rate on leaching efficiency was investigated. It was found that efficiency of 99% can be achieved by leaching the desulfurized tin precipitate sample in 6 M HCl at 90 °C for 90 min with the addition of Mg powder. The application of the tin removal process, described in this paper, contributes to efficient material flow management.",
publisher = "Springer",
journal = "Journal of Material Cycles and Waste Management",
title = "Leaching of metastannic acid from e-waste by-products",
volume = "22",
number = "6",
pages = "1899-1912",
doi = "10.1007/s10163-020-01076-5"
}

Đokić, J., Jovančićević, B., Brčeski, I., Ranitović, M., Gajić, N.,& Kamberović, Ž.. (2020). Leaching of metastannic acid from e-waste by-products. in Journal of Material Cycles and Waste Management
Springer., 22(6), 1899-1912.
https://doi.org/10.1007/s10163-020-01076-5

Đokić J, Jovančićević B, Brčeski I, Ranitović M, Gajić N, Kamberović Ž. Leaching of metastannic acid from e-waste by-products. in Journal of Material Cycles and Waste Management. 2020;22(6):1899-1912.
doi:10.1007/s10163-020-01076-5 .

Đokić, Jovana, Jovančićević, Branimir, Brčeski, Ilija, Ranitović, Milisav, Gajić, Nataša, Kamberović, Željko, "Leaching of metastannic acid from e-waste by-products" in Journal of Material Cycles and Waste Management, 22, no. 6 (2020):1899-1912,
https://doi.org/10.1007/s10163-020-01076-5 . .

TY  - JOUR
AU  - Kašanin-Grubin, Milica
AU  - Hagemann, Lukas
AU  - Gajica, Gordana
AU  - Štrbac, Snežana
AU  - Jovančićević, Branimir
AU  - Vasić, Nebojša
AU  - Šajnović, Aleksandra
AU  - Đogo Mračević, Svetlana
AU  - Schwarzbauer, Jan
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5077
AB  - The objective of this study is geochronological investigation of sedimentological and inorganic composition, in the Danube Djerdap Lake sediments in order to obtain reliable information about former pollution. Eleven samples were taken from the 135-cm-deep sediment core drilled at the Orlova location. Since the core represents sediments deposited during 1972–2016, the sedimentation rate of ~ 3 cm year−1 was estimated. Grain size, mineralogical and geochemical composition was determined. Sediments are sandy silts and clayey silts, and only the deepest and shallowest layers contain > 30% of sand-size fraction. The highest concentrations of minor elements are found in the oldest sediment (1972–1977) as a consequence of the high flux of the material from variable sources. During the sedimentation period (1975–1990), the concentrations of analyzed elements are generally decreasing until the beginning of 1990s. After this period, there are two distinct decreases and two distinct increases in concentrations of elements. The fluctuations in minor element concentrations are a consequence of both natural and anthropogenic sources. Granitic rocks situated south are source of minerals that carry minor elements. Enrichment Factor, Geoaccumulation Index, Contamination Factor and Pollution Load Index indicate that concentrations of certain minor elements at specific depositional periods have anthropogenic source.
T2  - Environmental Geochemistry and Health volume
T1  - Geochronological investigation of sediments of the Danube Djerdap lake (Serbia) - organic pollutants
VL  - 42
SP  - 693
EP  - 707
DO  - 10.1007/s10653-019-00403-6
ER  - 

@article{
author = "Kašanin-Grubin, Milica and Hagemann, Lukas and Gajica, Gordana and Štrbac, Snežana and Jovančićević, Branimir and Vasić, Nebojša and Šajnović, Aleksandra and Đogo Mračević, Svetlana and Schwarzbauer, Jan",
year = "2020",
abstract = "The objective of this study is geochronological investigation of sedimentological and inorganic composition, in the Danube Djerdap Lake sediments in order to obtain reliable information about former pollution. Eleven samples were taken from the 135-cm-deep sediment core drilled at the Orlova location. Since the core represents sediments deposited during 1972–2016, the sedimentation rate of ~ 3 cm year−1 was estimated. Grain size, mineralogical and geochemical composition was determined. Sediments are sandy silts and clayey silts, and only the deepest and shallowest layers contain > 30% of sand-size fraction. The highest concentrations of minor elements are found in the oldest sediment (1972–1977) as a consequence of the high flux of the material from variable sources. During the sedimentation period (1975–1990), the concentrations of analyzed elements are generally decreasing until the beginning of 1990s. After this period, there are two distinct decreases and two distinct increases in concentrations of elements. The fluctuations in minor element concentrations are a consequence of both natural and anthropogenic sources. Granitic rocks situated south are source of minerals that carry minor elements. Enrichment Factor, Geoaccumulation Index, Contamination Factor and Pollution Load Index indicate that concentrations of certain minor elements at specific depositional periods have anthropogenic source.",
journal = "Environmental Geochemistry and Health volume",
title = "Geochronological investigation of sediments of the Danube Djerdap lake (Serbia) - organic pollutants",
volume = "42",
pages = "693-707",
doi = "10.1007/s10653-019-00403-6"
}

Kašanin-Grubin, M., Hagemann, L., Gajica, G., Štrbac, S., Jovančićević, B., Vasić, N., Šajnović, A., Đogo Mračević, S.,& Schwarzbauer, J.. (2020). Geochronological investigation of sediments of the Danube Djerdap lake (Serbia) - organic pollutants. in Environmental Geochemistry and Health volume, 42, 693-707.
https://doi.org/10.1007/s10653-019-00403-6

Kašanin-Grubin M, Hagemann L, Gajica G, Štrbac S, Jovančićević B, Vasić N, Šajnović A, Đogo Mračević S, Schwarzbauer J. Geochronological investigation of sediments of the Danube Djerdap lake (Serbia) - organic pollutants. in Environmental Geochemistry and Health volume. 2020;42:693-707.
doi:10.1007/s10653-019-00403-6 .

Kašanin-Grubin, Milica, Hagemann, Lukas, Gajica, Gordana, Štrbac, Snežana, Jovančićević, Branimir, Vasić, Nebojša, Šajnović, Aleksandra, Đogo Mračević, Svetlana, Schwarzbauer, Jan, "Geochronological investigation of sediments of the Danube Djerdap lake (Serbia) - organic pollutants" in Environmental Geochemistry and Health volume, 42 (2020):693-707,
https://doi.org/10.1007/s10653-019-00403-6 . .

TY  - JOUR
AU  - Burazer, Nikola
AU  - Šajnović, Aleksandra
AU  - Vasić, Nebojša
AU  - Kašanin-Grubin, Milica
AU  - Životić, Dragana R.
AU  - Mendonça Filho, João Graciano
AU  - Vulić, Predrag J.
AU  - Jovančićević, Branimir
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3837
AB  - The investigation of the relationship between paleoenvironmental conditions and distribution and relative abundance of specific saturated and aromatic hydrocarbons was the main objective of this study, thus marking the parameters, which were most sensitive to environmental changes. Insights on the type, generative potential, and maturity of organic matter (OM), as well as paleoclimate conditions, along with the reconstruction of depositional settings of the northwest part of the Toplica basin (Serbia), were provided. Organic petrographic, palynofacies, organic geochemical, mineralogical, and XRF analyses were carried out to investigate 40 sediment samples of the Prebreza and Čučale sedimentary units. Investigated samples were deposited in the saline and anoxic environment, under semi-arid to semi-humid/humid climate conditions, along with the constant inflow of volcanoclastic material. The predominance of δ-methyltrimethyltridecil chroman (δ-MTTC) within euxinic portions of the stratified water column was associated with an increase in salinity, which was noticed for sediments of the Prebreza unit. Sediments from this stratigraphic unit showed a higher contribution of algae precursor, whereas sediments of the Čučale unit suggested higher participation of microbiologically reworked OM. Most of the samples contained oil-prone kerogen type II. Maturity of the OM for sediments of the Prebreza unit ranged from immature to early-mature, while for samples of the Čučale unit varied from early-mature to mature stages. Distribution of hopane biomarkers typical for crude oil indicated that depth of 1 km was a boundary for the genesis of thermodynamic, more stable compounds. A significant portion of semifusinite was correlated with the paleofire event, which affected the distribution of n-alkanes. The high production of hydrocarbons was related to volcanic activity. Parameters, which proved to be highly susceptible at the stratigraphic boundary between the Prebreza and Čučale units, were C-value, S/H, α-MTTC, δ-MTTC, β-/γ-MTTC, and (1,3- + 1,6-)/(1,4 + 1,5-DMC), respectively.
PB  - Elsevier
T2  - Marine and Petroleum Geology
T1  - Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia
VL  - 115
SP  - 104252
DO  - 10.1016/j.marpetgeo.2020.104252
ER  - 

@article{
author = "Burazer, Nikola and Šajnović, Aleksandra and Vasić, Nebojša and Kašanin-Grubin, Milica and Životić, Dragana R. and Mendonça Filho, João Graciano and Vulić, Predrag J. and Jovančićević, Branimir",
year = "2020",
abstract = "The investigation of the relationship between paleoenvironmental conditions and distribution and relative abundance of specific saturated and aromatic hydrocarbons was the main objective of this study, thus marking the parameters, which were most sensitive to environmental changes. Insights on the type, generative potential, and maturity of organic matter (OM), as well as paleoclimate conditions, along with the reconstruction of depositional settings of the northwest part of the Toplica basin (Serbia), were provided. Organic petrographic, palynofacies, organic geochemical, mineralogical, and XRF analyses were carried out to investigate 40 sediment samples of the Prebreza and Čučale sedimentary units. Investigated samples were deposited in the saline and anoxic environment, under semi-arid to semi-humid/humid climate conditions, along with the constant inflow of volcanoclastic material. The predominance of δ-methyltrimethyltridecil chroman (δ-MTTC) within euxinic portions of the stratified water column was associated with an increase in salinity, which was noticed for sediments of the Prebreza unit. Sediments from this stratigraphic unit showed a higher contribution of algae precursor, whereas sediments of the Čučale unit suggested higher participation of microbiologically reworked OM. Most of the samples contained oil-prone kerogen type II. Maturity of the OM for sediments of the Prebreza unit ranged from immature to early-mature, while for samples of the Čučale unit varied from early-mature to mature stages. Distribution of hopane biomarkers typical for crude oil indicated that depth of 1 km was a boundary for the genesis of thermodynamic, more stable compounds. A significant portion of semifusinite was correlated with the paleofire event, which affected the distribution of n-alkanes. The high production of hydrocarbons was related to volcanic activity. Parameters, which proved to be highly susceptible at the stratigraphic boundary between the Prebreza and Čučale units, were C-value, S/H, α-MTTC, δ-MTTC, β-/γ-MTTC, and (1,3- + 1,6-)/(1,4 + 1,5-DMC), respectively.",
publisher = "Elsevier",
journal = "Marine and Petroleum Geology",
title = "Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia",
volume = "115",
pages = "104252",
doi = "10.1016/j.marpetgeo.2020.104252"
}

Burazer, N., Šajnović, A., Vasić, N., Kašanin-Grubin, M., Životić, D. R., Mendonça Filho, J. G., Vulić, P. J.,& Jovančićević, B.. (2020). Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia. in Marine and Petroleum Geology
Elsevier., 115, 104252.
https://doi.org/10.1016/j.marpetgeo.2020.104252

Burazer N, Šajnović A, Vasić N, Kašanin-Grubin M, Životić DR, Mendonça Filho JG, Vulić PJ, Jovančićević B. Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia. in Marine and Petroleum Geology. 2020;115:104252.
doi:10.1016/j.marpetgeo.2020.104252 .

Burazer, Nikola, Šajnović, Aleksandra, Vasić, Nebojša, Kašanin-Grubin, Milica, Životić, Dragana R., Mendonça Filho, João Graciano, Vulić, Predrag J., Jovančićević, Branimir, "Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia" in Marine and Petroleum Geology, 115 (2020):104252,
https://doi.org/10.1016/j.marpetgeo.2020.104252 . .

TY  - JOUR
AU  - Šajnović, Aleksandra
AU  - Grba, Nenad
AU  - Neubauer, Franz
AU  - Kašanin-Grubin, Milica
AU  - Stojanović, Ksenija A.
AU  - Petković, Nenad
AU  - Jovančićević, Branimir
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4269
AB  - A combined inorganic and organic geochemical study was carried out on marls and mudstones collected from the Lower Miocene Lopare Basin, Bosnia and Herzegovina. A total of 46 samples collected from two boreholes, Pot 1 (depth of 193 m) and Pot 3 (depth of 344 m), showed that element abundances like boron (B), lithium (Li), strontium (Sr), uranium (U), chromium (Cr), nickel (Ni), magnesium (Mg), sodium (Na) and calcium (Ca) are much higher than average than in the upper continental crust (UCC). Chemical composition indicates at least two sources: (i) Mesozoic ophiolites occurring in the north of the investigated area, and (ii) dacito-andesitic pyroclastics (Mesozoic to Cenozoic). Lopare Basin sedimentation was influenced by strong evaporation resulting in a partly hypersaline lake, which formed during a warm climatic period, probably during the Miocene Climatic Optimum. A brief episode of humid climate conditions resulted in the basin filling-up and deposition of felsic sediments enriched in thorium (Th). Organic geochemistry shows that the majority of studied sediments contains predominantly immature to marginally mature algal organic matter (OM). The biomarker patterns are generally in agreement with the geological history of the Lopare Basin and inorganic and mineralogical data. Conversely, the molecular distribution of n-alkanes as reliable climatic and δ-MTTC as paleosalinity indicators do not support this conclusion.
PB  - Wiley
T2  - Acta Geologica Sinica - English Edition
T1  - Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance
VL  - 94
IS  - 5
SP  - 1591
EP  - 1618
DO  - 10.1111/1755-6724.14324
ER  - 

@article{
author = "Šajnović, Aleksandra and Grba, Nenad and Neubauer, Franz and Kašanin-Grubin, Milica and Stojanović, Ksenija A. and Petković, Nenad and Jovančićević, Branimir",
year = "2020",
abstract = "A combined inorganic and organic geochemical study was carried out on marls and mudstones collected from the Lower Miocene Lopare Basin, Bosnia and Herzegovina. A total of 46 samples collected from two boreholes, Pot 1 (depth of 193 m) and Pot 3 (depth of 344 m), showed that element abundances like boron (B), lithium (Li), strontium (Sr), uranium (U), chromium (Cr), nickel (Ni), magnesium (Mg), sodium (Na) and calcium (Ca) are much higher than average than in the upper continental crust (UCC). Chemical composition indicates at least two sources: (i) Mesozoic ophiolites occurring in the north of the investigated area, and (ii) dacito-andesitic pyroclastics (Mesozoic to Cenozoic). Lopare Basin sedimentation was influenced by strong evaporation resulting in a partly hypersaline lake, which formed during a warm climatic period, probably during the Miocene Climatic Optimum. A brief episode of humid climate conditions resulted in the basin filling-up and deposition of felsic sediments enriched in thorium (Th). Organic geochemistry shows that the majority of studied sediments contains predominantly immature to marginally mature algal organic matter (OM). The biomarker patterns are generally in agreement with the geological history of the Lopare Basin and inorganic and mineralogical data. Conversely, the molecular distribution of n-alkanes as reliable climatic and δ-MTTC as paleosalinity indicators do not support this conclusion.",
publisher = "Wiley",
journal = "Acta Geologica Sinica - English Edition",
title = "Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance",
volume = "94",
number = "5",
pages = "1591-1618",
doi = "10.1111/1755-6724.14324"
}

Šajnović, A., Grba, N., Neubauer, F., Kašanin-Grubin, M., Stojanović, K. A., Petković, N.,& Jovančićević, B.. (2020). Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance. in Acta Geologica Sinica - English Edition
Wiley., 94(5), 1591-1618.
https://doi.org/10.1111/1755-6724.14324

Šajnović A, Grba N, Neubauer F, Kašanin-Grubin M, Stojanović KA, Petković N, Jovančićević B. Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance. in Acta Geologica Sinica - English Edition. 2020;94(5):1591-1618.
doi:10.1111/1755-6724.14324 .

Šajnović, Aleksandra, Grba, Nenad, Neubauer, Franz, Kašanin-Grubin, Milica, Stojanović, Ksenija A., Petković, Nenad, Jovančićević, Branimir, "Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance" in Acta Geologica Sinica - English Edition, 94, no. 5 (2020):1591-1618,
https://doi.org/10.1111/1755-6724.14324 . .

TY  - JOUR
AU  - Hagemann, Lukas
AU  - Kašanin-Grubin, Milica
AU  - Gajica, Gordana
AU  - Štrbac, Snežana
AU  - Šajnović, Aleksandra
AU  - Jovančićević, Branimir
AU  - Vasić, Nebojša
AU  - Schwarzbauer, Jan
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4275
AB  - The original version of this article unfortunately contained an error. The authors missed to mention that this project received financial support by the Ministry of Education, Science and Technological Development of the Republic of Serbia, Grants 176006, 176019. In addition, the Figure 1 was published erroneously. The corrected Figure 1 is shown below(Figure presented.). © 2020, Springer Nature Switzerland AG.
PB  - Springer Nature Switzerland
T2  - Water, Air, and Soil Pollution
T1  - Correction to: Four Decades of Organic Anthropogenic Pollution: a Compilation for Djerdap Lake Sediments, Serbia (Water, Air, & Soil Pollution, (2019), 230, 10, (246), 10.1007/s11270-019-4277-8)
VL  - 231
IS  - 2
SP  - 67
DO  - 10.1007/s11270-020-4420-6
ER  - 

@article{
author = "Hagemann, Lukas and Kašanin-Grubin, Milica and Gajica, Gordana and Štrbac, Snežana and Šajnović, Aleksandra and Jovančićević, Branimir and Vasić, Nebojša and Schwarzbauer, Jan",
year = "2020",
abstract = "The original version of this article unfortunately contained an error. The authors missed to mention that this project received financial support by the Ministry of Education, Science and Technological Development of the Republic of Serbia, Grants 176006, 176019. In addition, the Figure 1 was published erroneously. The corrected Figure 1 is shown below(Figure presented.). © 2020, Springer Nature Switzerland AG.",
publisher = "Springer Nature Switzerland",
journal = "Water, Air, and Soil Pollution",
title = "Correction to: Four Decades of Organic Anthropogenic Pollution: a Compilation for Djerdap Lake Sediments, Serbia (Water, Air, & Soil Pollution, (2019), 230, 10, (246), 10.1007/s11270-019-4277-8)",
volume = "231",
number = "2",
pages = "67",
doi = "10.1007/s11270-020-4420-6"
}

Hagemann, L., Kašanin-Grubin, M., Gajica, G., Štrbac, S., Šajnović, A., Jovančićević, B., Vasić, N.,& Schwarzbauer, J.. (2020). Correction to: Four Decades of Organic Anthropogenic Pollution: a Compilation for Djerdap Lake Sediments, Serbia (Water, Air, & Soil Pollution, (2019), 230, 10, (246), 10.1007/s11270-019-4277-8). in Water, Air, and Soil Pollution
Springer Nature Switzerland., 231(2), 67.
https://doi.org/10.1007/s11270-020-4420-6

Hagemann L, Kašanin-Grubin M, Gajica G, Štrbac S, Šajnović A, Jovančićević B, Vasić N, Schwarzbauer J. Correction to: Four Decades of Organic Anthropogenic Pollution: a Compilation for Djerdap Lake Sediments, Serbia (Water, Air, & Soil Pollution, (2019), 230, 10, (246), 10.1007/s11270-019-4277-8). in Water, Air, and Soil Pollution. 2020;231(2):67.
doi:10.1007/s11270-020-4420-6 .

Hagemann, Lukas, Kašanin-Grubin, Milica, Gajica, Gordana, Štrbac, Snežana, Šajnović, Aleksandra, Jovančićević, Branimir, Vasić, Nebojša, Schwarzbauer, Jan, "Correction to: Four Decades of Organic Anthropogenic Pollution: a Compilation for Djerdap Lake Sediments, Serbia (Water, Air, & Soil Pollution, (2019), 230, 10, (246), 10.1007/s11270-019-4277-8)" in Water, Air, and Soil Pollution, 231, no. 2 (2020):67,
https://doi.org/10.1007/s11270-020-4420-6 . .

TY  - JOUR
AU  - Saheed, Ramadan Musbah M.
AU  - Šolević-Knudsen, Tatjana
AU  - Faraj, Musbah Abduljalil M.
AU  - Nikolovski, Zlatko
AU  - Nytoft, Hans Peter
AU  - Jovančićević, Branimir
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4303
AB  - Seven crude oils from four oil fields in the Sirte and Murzuq Basins in Libya were investigated in order to estimate their organic geochemical homogeneity. Saturated biomarkers (n-alkanes and isoprenoids) were analyzed using gas chromatography–mass spectrometry (GC–MS). The parameters calculated from the distributions of n-alkanes and isoprenoid aliphatic alkanes, pristane and phytane were used to interpret the organic geochemical characteristics of the oils. Based on the high relative concentration of lower n-alkane homologues in the C11–C16 range and high API values, the oils were classified as light oils. These results also implied that the oils were not biodegraded. The parameters calculated from the distributions of saturated biomarkers indicated that all investigated oils were generated from source rocks containing organic matter of a similar marine origin but with a contribution of terrestrial organic matter. The results also demonstrated that these source rocks were deposited in an oxic environment. The same source rock or the same type of source rocks for all seven samples were postulated. It was concluded that, if the crude oils from these distant basins originated from the same source rocks, they must have had different lengths of their migration pathways.
T2  - Journal of the Serbian Chemical Society
T1  - Saturated biomarkers in the estimation of organic geochemical homogeneity of crude oils from four oil fields in Libya
VL  - 85
IS  - 11
SP  - 1489
EP  - 1499
DO  - 10.2298/JSC200501055S
ER  - 

@article{
author = "Saheed, Ramadan Musbah M. and Šolević-Knudsen, Tatjana and Faraj, Musbah Abduljalil M. and Nikolovski, Zlatko and Nytoft, Hans Peter and Jovančićević, Branimir",
year = "2020",
abstract = "Seven crude oils from four oil fields in the Sirte and Murzuq Basins in Libya were investigated in order to estimate their organic geochemical homogeneity. Saturated biomarkers (n-alkanes and isoprenoids) were analyzed using gas chromatography–mass spectrometry (GC–MS). The parameters calculated from the distributions of n-alkanes and isoprenoid aliphatic alkanes, pristane and phytane were used to interpret the organic geochemical characteristics of the oils. Based on the high relative concentration of lower n-alkane homologues in the C11–C16 range and high API values, the oils were classified as light oils. These results also implied that the oils were not biodegraded. The parameters calculated from the distributions of saturated biomarkers indicated that all investigated oils were generated from source rocks containing organic matter of a similar marine origin but with a contribution of terrestrial organic matter. The results also demonstrated that these source rocks were deposited in an oxic environment. The same source rock or the same type of source rocks for all seven samples were postulated. It was concluded that, if the crude oils from these distant basins originated from the same source rocks, they must have had different lengths of their migration pathways.",
journal = "Journal of the Serbian Chemical Society",
title = "Saturated biomarkers in the estimation of organic geochemical homogeneity of crude oils from four oil fields in Libya",
volume = "85",
number = "11",
pages = "1489-1499",
doi = "10.2298/JSC200501055S"
}

Saheed, R. M. M., Šolević-Knudsen, T., Faraj, M. A. M., Nikolovski, Z., Nytoft, H. P.,& Jovančićević, B.. (2020). Saturated biomarkers in the estimation of organic geochemical homogeneity of crude oils from four oil fields in Libya. in Journal of the Serbian Chemical Society, 85(11), 1489-1499.
https://doi.org/10.2298/JSC200501055S

Saheed RMM, Šolević-Knudsen T, Faraj MAM, Nikolovski Z, Nytoft HP, Jovančićević B. Saturated biomarkers in the estimation of organic geochemical homogeneity of crude oils from four oil fields in Libya. in Journal of the Serbian Chemical Society. 2020;85(11):1489-1499.
doi:10.2298/JSC200501055S .

Saheed, Ramadan Musbah M., Šolević-Knudsen, Tatjana, Faraj, Musbah Abduljalil M., Nikolovski, Zlatko, Nytoft, Hans Peter, Jovančićević, Branimir, "Saturated biomarkers in the estimation of organic geochemical homogeneity of crude oils from four oil fields in Libya" in Journal of the Serbian Chemical Society, 85, no. 11 (2020):1489-1499,
https://doi.org/10.2298/JSC200501055S . .

TY  - JOUR
AU  - Bulatović, Sandra
AU  - Marić, Nenad
AU  - Šolević-Knudsen, Tatjana
AU  - Avdalović, Jelena
AU  - Ilić, Mila V.
AU  - Jovančićević, Branimir
AU  - Vrvić, Miroslav M.
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4142
AB  - Due to their extensive use, petroleum hydrocarbons are among the most common groundwater contaminants. Compared to the traditional methods of physical pumping of contamination from the aquifer and subsequent treatment (i.e., pump and treat), bioremediation is an economically cost-effective technology. The aim of this remediation approach is to transform biologically contaminants, most often by microbiological activity, into non-toxic compounds. More precisely, it is an active remediation process that involves biostimulation (increase of aquifer oxygenation, addition of nutrients) and/or bioaugmentation (injection of a concentrated and specialized population of microorganisms). Using both biostimulation and bioaugmentation, enhanced in situ groundwater bioremediation was applied at a hydrocarbon-contaminated site in Belgrade. The bioremediation treatment, applied over twelve months, was highly efficient in reducing the concentrations of total petroleum hydrocarbon (TPH) to acceptable levels. The concentration of TPH in the piezometer P-5 was reduced by 98.55 %, in the piezometer P-6 by 98.30 % and in the piezometer P-7 by 98.09 %. These results provided strong evidence on the potential of this remediation approach to overcome site-limiting factors and enhance microbiological activity in order to reduce groundwater contamination. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. III 43004]
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Bioremediation of groundwater contaminated with petroleum hydrocarbons applied at a site in Belgrade (Serbia)
VL  - 85
IS  - 8
SP  - 1067
EP  - 1081
DO  - 10.2298/JSC191023003B
ER  - 

@article{
author = "Bulatović, Sandra and Marić, Nenad and Šolević-Knudsen, Tatjana and Avdalović, Jelena and Ilić, Mila V. and Jovančićević, Branimir and Vrvić, Miroslav M.",
year = "2020",
abstract = "Due to their extensive use, petroleum hydrocarbons are among the most common groundwater contaminants. Compared to the traditional methods of physical pumping of contamination from the aquifer and subsequent treatment (i.e., pump and treat), bioremediation is an economically cost-effective technology. The aim of this remediation approach is to transform biologically contaminants, most often by microbiological activity, into non-toxic compounds. More precisely, it is an active remediation process that involves biostimulation (increase of aquifer oxygenation, addition of nutrients) and/or bioaugmentation (injection of a concentrated and specialized population of microorganisms). Using both biostimulation and bioaugmentation, enhanced in situ groundwater bioremediation was applied at a hydrocarbon-contaminated site in Belgrade. The bioremediation treatment, applied over twelve months, was highly efficient in reducing the concentrations of total petroleum hydrocarbon (TPH) to acceptable levels. The concentration of TPH in the piezometer P-5 was reduced by 98.55 %, in the piezometer P-6 by 98.30 % and in the piezometer P-7 by 98.09 %. These results provided strong evidence on the potential of this remediation approach to overcome site-limiting factors and enhance microbiological activity in order to reduce groundwater contamination. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. III 43004]",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Bioremediation of groundwater contaminated with petroleum hydrocarbons applied at a site in Belgrade (Serbia)",
volume = "85",
number = "8",
pages = "1067-1081",
doi = "10.2298/JSC191023003B"
}

Bulatović, S., Marić, N., Šolević-Knudsen, T., Avdalović, J., Ilić, M. V., Jovančićević, B.,& Vrvić, M. M.. (2020). Bioremediation of groundwater contaminated with petroleum hydrocarbons applied at a site in Belgrade (Serbia). in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 85(8), 1067-1081.
https://doi.org/10.2298/JSC191023003B

Bulatović S, Marić N, Šolević-Knudsen T, Avdalović J, Ilić MV, Jovančićević B, Vrvić MM. Bioremediation of groundwater contaminated with petroleum hydrocarbons applied at a site in Belgrade (Serbia). in Journal of the Serbian Chemical Society. 2020;85(8):1067-1081.
doi:10.2298/JSC191023003B .

Bulatović, Sandra, Marić, Nenad, Šolević-Knudsen, Tatjana, Avdalović, Jelena, Ilić, Mila V., Jovančićević, Branimir, Vrvić, Miroslav M., "Bioremediation of groundwater contaminated with petroleum hydrocarbons applied at a site in Belgrade (Serbia)" in Journal of the Serbian Chemical Society, 85, no. 8 (2020):1067-1081,
https://doi.org/10.2298/JSC191023003B . .