TY  - JOUR
AU  - Ranđelović, Dragana
AU  - Mutić, Jelena
AU  - Marjanović, Prvoslav
AU  - Đorđević, Tamara
AU  - Kašanin-Grubin, Milica
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3966
AB  - Materials held within mine tailings pose a serious risk to the environment in cases of tailings dam failure. Collapse of the tailing dam at the Stolice antimony mine in West Serbia caused a spilling of tailing slurry into the nearby river watersheds. Medium-term effects of As, Pb, Sb, Zn, and Cd from the tailings material that remained in the flooded zone 3 years after the initial exposure were evaluated. Mobility of these elements was determined by analyzing their distribution between exchangeable, reducible, oxidizable, and residual phases. Results indicate that Fe-Mn oxides represent important sinks for As, Cd, Pb, and Sb. Multivariate statistical analysis revealed that concentrations of the analyzed elements were related to sand-sized fractions, as they tended to adsorb or co-precipitate as coatings on larger particles (particularly feldspar and quartz) upon the change of redox conditions. Assessment of the most relevant physico-chemical factors, metal(loid) concentration, and mobility can be used as tool to characterize the degree of contamination of impacted sites. Percentage of sand-sized particles, content of investigated metal(loid)s, and their amount in the reducible fractions are factors determining the best remediation techniques for the area impacted by tailing spill.
PB  - Springer
T2  - Environmental Science and Pollution Research
T1  - Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia
VL  - 27
IS  - 6
SP  - 6253
EP  - 6268
DO  - 10.1007/s11356-019-07348-4
ER  - 

@article{
author = "Ranđelović, Dragana and Mutić, Jelena and Marjanović, Prvoslav and Đorđević, Tamara and Kašanin-Grubin, Milica",
year = "2020",
abstract = "Materials held within mine tailings pose a serious risk to the environment in cases of tailings dam failure. Collapse of the tailing dam at the Stolice antimony mine in West Serbia caused a spilling of tailing slurry into the nearby river watersheds. Medium-term effects of As, Pb, Sb, Zn, and Cd from the tailings material that remained in the flooded zone 3 years after the initial exposure were evaluated. Mobility of these elements was determined by analyzing their distribution between exchangeable, reducible, oxidizable, and residual phases. Results indicate that Fe-Mn oxides represent important sinks for As, Cd, Pb, and Sb. Multivariate statistical analysis revealed that concentrations of the analyzed elements were related to sand-sized fractions, as they tended to adsorb or co-precipitate as coatings on larger particles (particularly feldspar and quartz) upon the change of redox conditions. Assessment of the most relevant physico-chemical factors, metal(loid) concentration, and mobility can be used as tool to characterize the degree of contamination of impacted sites. Percentage of sand-sized particles, content of investigated metal(loid)s, and their amount in the reducible fractions are factors determining the best remediation techniques for the area impacted by tailing spill.",
publisher = "Springer",
journal = "Environmental Science and Pollution Research",
title = "Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia",
volume = "27",
number = "6",
pages = "6253-6268",
doi = "10.1007/s11356-019-07348-4"
}

Ranđelović, D., Mutić, J., Marjanović, P., Đorđević, T.,& Kašanin-Grubin, M.. (2020). Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia. in Environmental Science and Pollution Research
Springer., 27(6), 6253-6268.
https://doi.org/10.1007/s11356-019-07348-4

Ranđelović D, Mutić J, Marjanović P, Đorđević T, Kašanin-Grubin M. Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia. in Environmental Science and Pollution Research. 2020;27(6):6253-6268.
doi:10.1007/s11356-019-07348-4 .

Ranđelović, Dragana, Mutić, Jelena, Marjanović, Prvoslav, Đorđević, Tamara, Kašanin-Grubin, Milica, "Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia" in Environmental Science and Pollution Research, 27, no. 6 (2020):6253-6268,
https://doi.org/10.1007/s11356-019-07348-4 . .

TY  - JOUR
AU  - Životić, Dragana R.
AU  - Cvetković, Olga
AU  - Vulić, Predrag J.
AU  - Gržetić, Ivan
AU  - Simić, Vladimir
AU  - Ilijević, Konstantin
AU  - Dojčinović, Biljana P.
AU  - Erić, Suzana
AU  - Radić, Bogdan
AU  - Stojadinović, Sanja M.
AU  - Trifunović, Snežana S.
PY  - 2019
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2897
AB  - A geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). The most abundant minerals in all lignite samples from the three coal seams are clays (illite/smectite), silicates (quartz, plagioclase), sulphates (gypsum/anhydrite) and carbonate (calcite). The other iron-rich minerals are sulphides, oxides and hydroxides (pyrite, mag-netite, haematite, and limonite). In general, mineral matter in the matrix coal consists of illite/ smectite and quartz, while xylite-rich coals, apart from illite/smectite, have a higher content of sulphates and Fe-oxide/hydroxide minerals. The lignite from the Kovin deposit is enriched in As, Cd, Co, Cr, Cu, Ga, Li, Mn, Mo, Ni, Pb, V, Zn, Gd, Tb, Er and Lu in comparison with the Clarke values for brown coals. The statistical analysis of bulk compositional data shows inorganic affinity for the majority of the major and trace elements and possible association with pyrite, illite/ smectite and calcite.
PB  - Crossref
T2  - Geologia Croatica
T1  - Distribution of major and trace elements in the Kovin lignite (Serbia)
VL  - 72
IS  - 1
SP  - 51
EP  - 79
DO  - 10.4154/gc.2019.06
ER  - 

@article{
author = "Životić, Dragana R. and Cvetković, Olga and Vulić, Predrag J. and Gržetić, Ivan and Simić, Vladimir and Ilijević, Konstantin and Dojčinović, Biljana P. and Erić, Suzana and Radić, Bogdan and Stojadinović, Sanja M. and Trifunović, Snežana S.",
year = "2019, 2019",
abstract = "A geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). The most abundant minerals in all lignite samples from the three coal seams are clays (illite/smectite), silicates (quartz, plagioclase), sulphates (gypsum/anhydrite) and carbonate (calcite). The other iron-rich minerals are sulphides, oxides and hydroxides (pyrite, mag-netite, haematite, and limonite). In general, mineral matter in the matrix coal consists of illite/ smectite and quartz, while xylite-rich coals, apart from illite/smectite, have a higher content of sulphates and Fe-oxide/hydroxide minerals. The lignite from the Kovin deposit is enriched in As, Cd, Co, Cr, Cu, Ga, Li, Mn, Mo, Ni, Pb, V, Zn, Gd, Tb, Er and Lu in comparison with the Clarke values for brown coals. The statistical analysis of bulk compositional data shows inorganic affinity for the majority of the major and trace elements and possible association with pyrite, illite/ smectite and calcite.",
publisher = "Crossref",
journal = "Geologia Croatica",
title = "Distribution of major and trace elements in the Kovin lignite (Serbia)",
volume = "72",
number = "1",
pages = "51-79",
doi = "10.4154/gc.2019.06"
}

Životić, D. R., Cvetković, O., Vulić, P. J., Gržetić, I., Simić, V., Ilijević, K., Dojčinović, B. P., Erić, S., Radić, B., Stojadinović, S. M.,& Trifunović, S. S.. (2019). Distribution of major and trace elements in the Kovin lignite (Serbia). in Geologia Croatica
Crossref., 72(1), 51-79.
https://doi.org/10.4154/gc.2019.06

Životić DR, Cvetković O, Vulić PJ, Gržetić I, Simić V, Ilijević K, Dojčinović BP, Erić S, Radić B, Stojadinović SM, Trifunović SS. Distribution of major and trace elements in the Kovin lignite (Serbia). in Geologia Croatica. 2019;72(1):51-79.
doi:10.4154/gc.2019.06 .

Životić, Dragana R., Cvetković, Olga, Vulić, Predrag J., Gržetić, Ivan, Simić, Vladimir, Ilijević, Konstantin, Dojčinović, Biljana P., Erić, Suzana, Radić, Bogdan, Stojadinović, Sanja M., Trifunović, Snežana S., "Distribution of major and trace elements in the Kovin lignite (Serbia)" in Geologia Croatica, 72, no. 1 (2019):51-79,
https://doi.org/10.4154/gc.2019.06 . .

TY  - JOUR
AU  - Ranđelović, Dragana
AU  - Gajić, Gordana
AU  - Mutić, Jelena
AU  - Pavlović, Pavle
AU  - Mihailović, Nevena
AU  - Jovanović, Slobodan
PY  - 2016
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2332
AB  - Metalliferous mine wastes represent one of the major sources of environmental contamination from mining activities. Bor region (Serbia) is one of the largest copper mine basins in Europe where long-term mining caused severe environmental deterioration and created one of the most degraded locations in Serbia and Europe. At the spontaneously colonized metalliferous mine wastes in Bor, plant species Epilobium dodonaei dominates in the mine slopes and mine waste surfaces. Epilobium dodonaei has the status of endangered and protected species in parts of European range (i. e. plant is included in the Red lists of the countries in the Carpathian mountains region), primarily due to losses of natural gravel habitats. The main focus of this research was physico-chemical characterization of mine waste, assessment of phytoremediation potential and plant metabolic stress response of Epilobium dodonaei at the hot spot metalliferous mine site in order to evaluate the possibility for application of endangered species in ecological restoration. The Bor mine wastes are characterized by coarse soil texture, various pH (4.58-8.30), and elevated concentrations of arsenic (44.5-271 mg kg(-1)) and copper (311-2820 mg kg(-1)) that exceed the Serbian limiting threshold and remediation values. Oxidation of metal-sulfide minerals on waste surface leads to increased acidity, followed by elevated metal mobility of the mine spoil solution. Content of arsenic, copper, lead and zinc in roots of E. dodonaei was correlated with pseudo-total and EDTA-available concentrations in Bor mine spoils. Furthermore, the content of arsenic, copper, lead and zinc in roots (3.98 mg kg(-1), 140 mg kg(-1), 3.19 mg kg(-1), and 72.8 mg kg(-1), respectively) and shoots (4.69 mg kg(-1),57.7 mg kg(-1), 1.17 mg kg(-1), and 59.3 mg kg(-1), respectively) of E. dodonaei reflected the multi-metal pollution at the investigated site. Epilobium dodonaei largely retains copper, lead and zinc in roots than in shoots and has the potential for phytoremediation of mine wastes. Epilobium dodonaei at Bor mine spoil had a high content of malondialdehyde in roots and leaves as well as reduced chlorophylls and carotenoids content in leaves, indicating great oxidative stress. However, elevated arsenic and copper content could promote biosynthesis of antioxidants in roots and leaves of E. dodonaei at mine spoil. Creation of an endangered species habitat on mine waste rocks of the Bor mining area and similar sites of Carpatho-Balkan metallogenic province could successfully contribute to the preservation of E. dodonaei. Development of practical procedures for the selection and application of endangered plant species in reclamation should create stronger link between ecological restoration and conservation biology. Finally, the application of endangered plant species should take a more prominent role in the restoration process and ecosystem design. (C) 2016 Elsevier B. V. All rights reserved.
PB  - Elsevier Science Bv, Amsterdam
T2  - Ecological Engineering
T1  - Ecological potential of Epilobium dodonaei Vill. for restoration of metalliferous mine wastes
VL  - 95
SP  - 800
EP  - 810
DO  - 10.1016/j.ecoleng.2016.07.015
ER  - 

@article{
author = "Ranđelović, Dragana and Gajić, Gordana and Mutić, Jelena and Pavlović, Pavle and Mihailović, Nevena and Jovanović, Slobodan",
year = "2016",
abstract = "Metalliferous mine wastes represent one of the major sources of environmental contamination from mining activities. Bor region (Serbia) is one of the largest copper mine basins in Europe where long-term mining caused severe environmental deterioration and created one of the most degraded locations in Serbia and Europe. At the spontaneously colonized metalliferous mine wastes in Bor, plant species Epilobium dodonaei dominates in the mine slopes and mine waste surfaces. Epilobium dodonaei has the status of endangered and protected species in parts of European range (i. e. plant is included in the Red lists of the countries in the Carpathian mountains region), primarily due to losses of natural gravel habitats. The main focus of this research was physico-chemical characterization of mine waste, assessment of phytoremediation potential and plant metabolic stress response of Epilobium dodonaei at the hot spot metalliferous mine site in order to evaluate the possibility for application of endangered species in ecological restoration. The Bor mine wastes are characterized by coarse soil texture, various pH (4.58-8.30), and elevated concentrations of arsenic (44.5-271 mg kg(-1)) and copper (311-2820 mg kg(-1)) that exceed the Serbian limiting threshold and remediation values. Oxidation of metal-sulfide minerals on waste surface leads to increased acidity, followed by elevated metal mobility of the mine spoil solution. Content of arsenic, copper, lead and zinc in roots of E. dodonaei was correlated with pseudo-total and EDTA-available concentrations in Bor mine spoils. Furthermore, the content of arsenic, copper, lead and zinc in roots (3.98 mg kg(-1), 140 mg kg(-1), 3.19 mg kg(-1), and 72.8 mg kg(-1), respectively) and shoots (4.69 mg kg(-1),57.7 mg kg(-1), 1.17 mg kg(-1), and 59.3 mg kg(-1), respectively) of E. dodonaei reflected the multi-metal pollution at the investigated site. Epilobium dodonaei largely retains copper, lead and zinc in roots than in shoots and has the potential for phytoremediation of mine wastes. Epilobium dodonaei at Bor mine spoil had a high content of malondialdehyde in roots and leaves as well as reduced chlorophylls and carotenoids content in leaves, indicating great oxidative stress. However, elevated arsenic and copper content could promote biosynthesis of antioxidants in roots and leaves of E. dodonaei at mine spoil. Creation of an endangered species habitat on mine waste rocks of the Bor mining area and similar sites of Carpatho-Balkan metallogenic province could successfully contribute to the preservation of E. dodonaei. Development of practical procedures for the selection and application of endangered plant species in reclamation should create stronger link between ecological restoration and conservation biology. Finally, the application of endangered plant species should take a more prominent role in the restoration process and ecosystem design. (C) 2016 Elsevier B. V. All rights reserved.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Ecological Engineering",
title = "Ecological potential of Epilobium dodonaei Vill. for restoration of metalliferous mine wastes",
volume = "95",
pages = "800-810",
doi = "10.1016/j.ecoleng.2016.07.015"
}

Ranđelović, D., Gajić, G., Mutić, J., Pavlović, P., Mihailović, N.,& Jovanović, S.. (2016). Ecological potential of Epilobium dodonaei Vill. for restoration of metalliferous mine wastes. in Ecological Engineering
Elsevier Science Bv, Amsterdam., 95, 800-810.
https://doi.org/10.1016/j.ecoleng.2016.07.015

Ranđelović D, Gajić G, Mutić J, Pavlović P, Mihailović N, Jovanović S. Ecological potential of Epilobium dodonaei Vill. for restoration of metalliferous mine wastes. in Ecological Engineering. 2016;95:800-810.
doi:10.1016/j.ecoleng.2016.07.015 .

Ranđelović, Dragana, Gajić, Gordana, Mutić, Jelena, Pavlović, Pavle, Mihailović, Nevena, Jovanović, Slobodan, "Ecological potential of Epilobium dodonaei Vill. for restoration of metalliferous mine wastes" in Ecological Engineering, 95 (2016):800-810,
https://doi.org/10.1016/j.ecoleng.2016.07.015 . .

TY  - JOUR
AU  - Perunović, Tamara
AU  - Stojanović, Ksenija A.
AU  - Kašanin-Grubin, Milica
AU  - Šajnović, Aleksandra
AU  - Simić, Vladimir
AU  - Jovančićević, Branimir
AU  - Brčeski, Ilija
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1991
AB  - The geochemical composition of the soils and underlying sediments in the Kremna Basin was investigated. The aim was to assess whether the observed heavy metal concentrations in the soil samples represent geogenic or anthropogenic contamination. The second objective was to show that geochemical data of underlying sediments should be used as a tool in the determination of the potential hazard for soil contamination. For this purpose, the contents of As, Cr, Cu, Hg, Ni, Pb and Zn of soil samples were compared with standard values, a reference soil sample and local background values of the underlying sediments. The soil samples were unpolluted regarding the contents of As, Hg, Pb and Zn. All samples had higher contents of Cr and Ni, whereas three samples had higher contents of Cu than the limit standard values. Geochemical parameters showed that the higher concentrations of Cr, Cu and Ni in the soils could be attributed to geogenic impact. This conclusion was supported by the Chemical Proxy of Alteration and Chemical Index of Weathering values, which indicated intense weathering of the sediments. The obtained results showed that the Kremna area is under slight to moderate hazard if a land use change would occur, and proved the importance of the geochemical composition of underlying sediments in the interpretation of heavy metal pollution.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Geochemical investigation as a tool in the determination of the potential hazard for soil contamination (Kremna Basin, Serbia)
VL  - 80
IS  - 8
SP  - 1087
DO  - 10.2298/JSC140917108P
ER  - 

@article{
author = "Perunović, Tamara and Stojanović, Ksenija A. and Kašanin-Grubin, Milica and Šajnović, Aleksandra and Simić, Vladimir and Jovančićević, Branimir and Brčeski, Ilija",
year = "2015",
abstract = "The geochemical composition of the soils and underlying sediments in the Kremna Basin was investigated. The aim was to assess whether the observed heavy metal concentrations in the soil samples represent geogenic or anthropogenic contamination. The second objective was to show that geochemical data of underlying sediments should be used as a tool in the determination of the potential hazard for soil contamination. For this purpose, the contents of As, Cr, Cu, Hg, Ni, Pb and Zn of soil samples were compared with standard values, a reference soil sample and local background values of the underlying sediments. The soil samples were unpolluted regarding the contents of As, Hg, Pb and Zn. All samples had higher contents of Cr and Ni, whereas three samples had higher contents of Cu than the limit standard values. Geochemical parameters showed that the higher concentrations of Cr, Cu and Ni in the soils could be attributed to geogenic impact. This conclusion was supported by the Chemical Proxy of Alteration and Chemical Index of Weathering values, which indicated intense weathering of the sediments. The obtained results showed that the Kremna area is under slight to moderate hazard if a land use change would occur, and proved the importance of the geochemical composition of underlying sediments in the interpretation of heavy metal pollution.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Geochemical investigation as a tool in the determination of the potential hazard for soil contamination (Kremna Basin, Serbia)",
volume = "80",
number = "8",
pages = "1087",
doi = "10.2298/JSC140917108P"
}

Perunović, T., Stojanović, K. A., Kašanin-Grubin, M., Šajnović, A., Simić, V., Jovančićević, B.,& Brčeski, I.. (2015). Geochemical investigation as a tool in the determination of the potential hazard for soil contamination (Kremna Basin, Serbia). in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 80(8), 1087.
https://doi.org/10.2298/JSC140917108P

Perunović T, Stojanović KA, Kašanin-Grubin M, Šajnović A, Simić V, Jovančićević B, Brčeski I. Geochemical investigation as a tool in the determination of the potential hazard for soil contamination (Kremna Basin, Serbia). in Journal of the Serbian Chemical Society. 2015;80(8):1087.
doi:10.2298/JSC140917108P .

Perunović, Tamara, Stojanović, Ksenija A., Kašanin-Grubin, Milica, Šajnović, Aleksandra, Simić, Vladimir, Jovančićević, Branimir, Brčeski, Ilija, "Geochemical investigation as a tool in the determination of the potential hazard for soil contamination (Kremna Basin, Serbia)" in Journal of the Serbian Chemical Society, 80, no. 8 (2015):1087,
https://doi.org/10.2298/JSC140917108P . .

TY  - JOUR
AU  - Grba, Nenad
AU  - Šajnović, Aleksandra

AU  - Stojanović, Ksenija A.
AU  - Simić, Vladimir
AU  - Jovančićević, Branimir
AU  - Roglić, Goran
AU  - Eric, Vladisav
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1777
AB  - Sedimentary rocks from the saline formation of the Lopare Basin were investigated. Sediments contain a moderate amount of immature to marginally mature algal organic matter deposited under slightly reducing to anoxic and slightly saline to hypersaline conditions. Almost all of the samples contain beta-carotane in a relatively high quantity, and in some, it represents the most abundant compound in the total distribution of hydrocarbons. The objective of the study was to determine the conditions that are favourable to precursors of beta-carotene and/or the preservation of the carotenoid hydrocarbon skeleton. Moreover, the dominant transformation pathways of beta-carotene under different redox and salinity conditions, which lead to the formation of aromatic carotenoids were defined. Based on the content of beta-carotane, the examined sedimentary rocks are divided into groups A, B and C. Group A does not contain or contains up to 1% of beta-carotane, group B contains between 1 and 5% of beta-carotane, while group C contains more than 5% of 13-carotane in the overall distribution of hydrocarbons. The organic matter (OM) of the sediments of group A is characterized by a higher contribution of prokaryotic precursor organisms, in comparison with the other samples. The OM was deposited in a slightly saline reductive environment, with an increased erosion activity. This environment was unfavourable for the precursors of beta-carotene and/or for preservation of its hydrocarbon skeleton. Evidence for the degradation of the poliene chain in beta-carotene is the domination of monoaromatic compounds in the aromatic carotenoids distribution. The OM of sediments of groups B and C is similar, predominantly of algal origin deposited in a reducing to anoxic calm carbonate environment with salinity changes from hypersaline to saline. Such reduced to anoxic saline, but not hypersaline environments are most appropriate for precursors of beta-carotene and for the preservation of carotenoid skeleton. Cyclization and aromatization of polyene isoprenoid chain, whereby terminal groups remain the main pattern, is the main pathway of beta-carotene aromatization in anoxic hypersaline environments, whereas aromatization of terminal 1,1,5-trimethylcyclohexen-5-enyl groups and expulsion of toluene and m-xylene are typical for the reduced to anoxic saline environments. (C) 2013 Elsevier GmbH. All rights reserved.
PB  - Elsevier Gmbh, Urban & Fischer Verlag, Jena
T2  - Chemie der Erde-geochemistry
T1  - Preservation of diagenetic products of beta-carotene in sedimentary rocks from the Lopare Basin (Bosnia and Herzegovina)
VL  - 74
IS  - 1
SP  - 107
EP  - 123
DO  - 10.1016/j.chemer.2013.10.002
ER  - 

@article{
author = "Grba, Nenad and Šajnović, Aleksandra
 and Stojanović, Ksenija A. and Simić, Vladimir and Jovančićević, Branimir and Roglić, Goran and Eric, Vladisav",
year = "2014",
abstract = "Sedimentary rocks from the saline formation of the Lopare Basin were investigated. Sediments contain a moderate amount of immature to marginally mature algal organic matter deposited under slightly reducing to anoxic and slightly saline to hypersaline conditions. Almost all of the samples contain beta-carotane in a relatively high quantity, and in some, it represents the most abundant compound in the total distribution of hydrocarbons. The objective of the study was to determine the conditions that are favourable to precursors of beta-carotene and/or the preservation of the carotenoid hydrocarbon skeleton. Moreover, the dominant transformation pathways of beta-carotene under different redox and salinity conditions, which lead to the formation of aromatic carotenoids were defined. Based on the content of beta-carotane, the examined sedimentary rocks are divided into groups A, B and C. Group A does not contain or contains up to 1% of beta-carotane, group B contains between 1 and 5% of beta-carotane, while group C contains more than 5% of 13-carotane in the overall distribution of hydrocarbons. The organic matter (OM) of the sediments of group A is characterized by a higher contribution of prokaryotic precursor organisms, in comparison with the other samples. The OM was deposited in a slightly saline reductive environment, with an increased erosion activity. This environment was unfavourable for the precursors of beta-carotene and/or for preservation of its hydrocarbon skeleton. Evidence for the degradation of the poliene chain in beta-carotene is the domination of monoaromatic compounds in the aromatic carotenoids distribution. The OM of sediments of groups B and C is similar, predominantly of algal origin deposited in a reducing to anoxic calm carbonate environment with salinity changes from hypersaline to saline. Such reduced to anoxic saline, but not hypersaline environments are most appropriate for precursors of beta-carotene and for the preservation of carotenoid skeleton. Cyclization and aromatization of polyene isoprenoid chain, whereby terminal groups remain the main pattern, is the main pathway of beta-carotene aromatization in anoxic hypersaline environments, whereas aromatization of terminal 1,1,5-trimethylcyclohexen-5-enyl groups and expulsion of toluene and m-xylene are typical for the reduced to anoxic saline environments. (C) 2013 Elsevier GmbH. All rights reserved.",
publisher = "Elsevier Gmbh, Urban & Fischer Verlag, Jena",
journal = "Chemie der Erde-geochemistry",
title = "Preservation of diagenetic products of beta-carotene in sedimentary rocks from the Lopare Basin (Bosnia and Herzegovina)",
volume = "74",
number = "1",
pages = "107-123",
doi = "10.1016/j.chemer.2013.10.002"
}

Grba, N., Šajnović, A., Stojanović, K. A., Simić, V., Jovančićević, B., Roglić, G.,& Eric, V.. (2014). Preservation of diagenetic products of beta-carotene in sedimentary rocks from the Lopare Basin (Bosnia and Herzegovina). in Chemie der Erde-geochemistry
Elsevier Gmbh, Urban & Fischer Verlag, Jena., 74(1), 107-123.
https://doi.org/10.1016/j.chemer.2013.10.002

Grba N, Šajnović A, Stojanović KA, Simić V, Jovančićević B, Roglić G, Eric V. Preservation of diagenetic products of beta-carotene in sedimentary rocks from the Lopare Basin (Bosnia and Herzegovina). in Chemie der Erde-geochemistry. 2014;74(1):107-123.
doi:10.1016/j.chemer.2013.10.002 .

Grba, Nenad, Šajnović, Aleksandra
, Stojanović, Ksenija A., Simić, Vladimir, Jovančićević, Branimir, Roglić, Goran, Eric, Vladisav, "Preservation of diagenetic products of beta-carotene in sedimentary rocks from the Lopare Basin (Bosnia and Herzegovina)" in Chemie der Erde-geochemistry, 74, no. 1 (2014):107-123,
https://doi.org/10.1016/j.chemer.2013.10.002 . .

TY  - JOUR
AU  - Perunović, Tamara
AU  - Stojanović, Ksenija A.
AU  - Simić, Vladimir
AU  - Kašanin-Grubin, Milica
AU  - Šajnović, Aleksandra
AU  - Eric, Vladisav
AU  - Schwarzbauer, Jan
AU  - Vasić, Nebojša
AU  - Jovančićević, Branimir
AU  - Brčeski, Ilija
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1645
AB  - The Kremna Basin is located in south west Serbia, in the Zlatibor area, which is part of the Internal Dinarides. This basin is note worthy because of the type of bedrock drainage, which it represents. It was formed on ultrabasic rocks and volcanic materials that influenced the occurrence of organic matter (OM) in the basin fill. The objective of the study was to determine the organic geochemical characteristics of sediments from the central part of the Kremna Basin. The sediments studied belong to an intrabasinal facies, in which two sequences were distinguished. The lower sequence occurs at depths of 216-343 m, while the upper sequence is found from 13.5-216 m. At the start of basin development (265-343 m) sedimentation took place in shallow alkaline water, rich in Mg ions. Through time, a slight deepening of the basin occurred. This was followed by chemical deposition of carbonates (216-265 m). The most important change in the sedimentary environment occurred with the formation of sediments marking the transition between the sequences (at about 200 m). Sediments from the lower sequence are characterized by the dominance of dolomite and magnesite. There are indications of volcanic activity, i.e. tuff layers and the presence of searlesite. The upper sequence is characterized by the prevalence of calcite and dolomite. The amounts of MgO, Na2O and B are higher in the lower sequence, whereas the CaO content is higher in the upper sequence. The sediments contain different amounts of immature OM (late diagenesis). Biomarker analysis shows diverse precursors of the sedimentary OM: methanogenic archaea, photosynthetic green sulfur bacteria (Chlorobiaceae), bacterivorous ciliates, various bacteria, both photosynthetic and non-photosynthetic, the green unicellular microalga, Botryococcus braunii race A (exclusively in the upper sequence) and terrestrial plants. The lower sequence contains lower amount OM, composed primarily of kerogen II/III and III types, indicating a higher contribution of the allochtonous biomass of land plants from the lake catchment, particularly in the lower part. The sediments of the upper sequence are enriched in autochthonous aquatic OM, which comprises mostly kerogen I, I/II and II types. The transition from the lower sequence to the upper one is associated with a decrease in pristane to phytane ratio, gammacerane index and content of C-28 steroids, absence or significantly lower amount of squalane, absence of C-24 and C-25 regular isoprenoids, 8-methyl-2-methyl-2-(4,8,12-trimethyltridecyl) chroman and C-30 hop-17(21)-ene. Pyrolytic experiments showed that the sediments of the upper sequence, rich in aquatic OM, at a catagenetic stage could be a source of liquid hydrocarbons. The values of hopane, sterane and phenanthrene maturation parameters indicate that through pyrolysis at 400 degrees C the samples investigated reached a value of vitrinite reflectance equivalent of approximately 0.70%. It was estimated that the sediments should be found at depths of 2300-2900 m in order to become active source rocks. The calculated minimum temperature, necessary for catagenetic hydrocarbon generation, is between 103 and 107 degrees C.
PB  - Polish Geological Soc, Krakow
T2  - Annales Societatis Geologorum Poloniae
T1  - Organic Geochemical Study of the Lower Miocene Kremna Basin, Serbia
VL  - 84
IS  - 3
SP  - 185
EP  - 212
UR  - https://hdl.handle.net/21.15107/rcub_cherry_1645
ER  - 

@article{
author = "Perunović, Tamara and Stojanović, Ksenija A. and Simić, Vladimir and Kašanin-Grubin, Milica and Šajnović, Aleksandra and Eric, Vladisav and Schwarzbauer, Jan and Vasić, Nebojša and Jovančićević, Branimir and Brčeski, Ilija",
year = "2014",
abstract = "The Kremna Basin is located in south west Serbia, in the Zlatibor area, which is part of the Internal Dinarides. This basin is note worthy because of the type of bedrock drainage, which it represents. It was formed on ultrabasic rocks and volcanic materials that influenced the occurrence of organic matter (OM) in the basin fill. The objective of the study was to determine the organic geochemical characteristics of sediments from the central part of the Kremna Basin. The sediments studied belong to an intrabasinal facies, in which two sequences were distinguished. The lower sequence occurs at depths of 216-343 m, while the upper sequence is found from 13.5-216 m. At the start of basin development (265-343 m) sedimentation took place in shallow alkaline water, rich in Mg ions. Through time, a slight deepening of the basin occurred. This was followed by chemical deposition of carbonates (216-265 m). The most important change in the sedimentary environment occurred with the formation of sediments marking the transition between the sequences (at about 200 m). Sediments from the lower sequence are characterized by the dominance of dolomite and magnesite. There are indications of volcanic activity, i.e. tuff layers and the presence of searlesite. The upper sequence is characterized by the prevalence of calcite and dolomite. The amounts of MgO, Na2O and B are higher in the lower sequence, whereas the CaO content is higher in the upper sequence. The sediments contain different amounts of immature OM (late diagenesis). Biomarker analysis shows diverse precursors of the sedimentary OM: methanogenic archaea, photosynthetic green sulfur bacteria (Chlorobiaceae), bacterivorous ciliates, various bacteria, both photosynthetic and non-photosynthetic, the green unicellular microalga, Botryococcus braunii race A (exclusively in the upper sequence) and terrestrial plants. The lower sequence contains lower amount OM, composed primarily of kerogen II/III and III types, indicating a higher contribution of the allochtonous biomass of land plants from the lake catchment, particularly in the lower part. The sediments of the upper sequence are enriched in autochthonous aquatic OM, which comprises mostly kerogen I, I/II and II types. The transition from the lower sequence to the upper one is associated with a decrease in pristane to phytane ratio, gammacerane index and content of C-28 steroids, absence or significantly lower amount of squalane, absence of C-24 and C-25 regular isoprenoids, 8-methyl-2-methyl-2-(4,8,12-trimethyltridecyl) chroman and C-30 hop-17(21)-ene. Pyrolytic experiments showed that the sediments of the upper sequence, rich in aquatic OM, at a catagenetic stage could be a source of liquid hydrocarbons. The values of hopane, sterane and phenanthrene maturation parameters indicate that through pyrolysis at 400 degrees C the samples investigated reached a value of vitrinite reflectance equivalent of approximately 0.70%. It was estimated that the sediments should be found at depths of 2300-2900 m in order to become active source rocks. The calculated minimum temperature, necessary for catagenetic hydrocarbon generation, is between 103 and 107 degrees C.",
publisher = "Polish Geological Soc, Krakow",
journal = "Annales Societatis Geologorum Poloniae",
title = "Organic Geochemical Study of the Lower Miocene Kremna Basin, Serbia",
volume = "84",
number = "3",
pages = "185-212",
url = "https://hdl.handle.net/21.15107/rcub_cherry_1645"
}

Perunović, T., Stojanović, K. A., Simić, V., Kašanin-Grubin, M., Šajnović, A., Eric, V., Schwarzbauer, J., Vasić, N., Jovančićević, B.,& Brčeski, I.. (2014). Organic Geochemical Study of the Lower Miocene Kremna Basin, Serbia. in Annales Societatis Geologorum Poloniae
Polish Geological Soc, Krakow., 84(3), 185-212.
https://hdl.handle.net/21.15107/rcub_cherry_1645

Perunović T, Stojanović KA, Simić V, Kašanin-Grubin M, Šajnović A, Eric V, Schwarzbauer J, Vasić N, Jovančićević B, Brčeski I. Organic Geochemical Study of the Lower Miocene Kremna Basin, Serbia. in Annales Societatis Geologorum Poloniae. 2014;84(3):185-212.
https://hdl.handle.net/21.15107/rcub_cherry_1645 .

Perunović, Tamara, Stojanović, Ksenija A., Simić, Vladimir, Kašanin-Grubin, Milica, Šajnović, Aleksandra, Eric, Vladisav, Schwarzbauer, Jan, Vasić, Nebojša, Jovančićević, Branimir, Brčeski, Ilija, "Organic Geochemical Study of the Lower Miocene Kremna Basin, Serbia" in Annales Societatis Geologorum Poloniae, 84, no. 3 (2014):185-212,
https://hdl.handle.net/21.15107/rcub_cherry_1645 .

TY  - JOUR
AU  - Perunović, Tamara
AU  - Stojanović, Ksenija A.
AU  - Kašanin-Grubin, Milica
AU  - Šajnović, Aleksandra
AU  - Simić, Vladimir
AU  - Jovančićević, Branimir
AU  - Brčeski, Ilija
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/127
AB  - Geochemical composition of soils and underlying sediments in the Kremna Basin was investigated. The aim was to assess whether observed heavy metal concentrations in soil samples represent geogenic or anthropogenic contamination. The second objective is to show that geochemical data of underlying sediments should be used as a tool in determining of potential hazard for soil contamination. For this purpose, comparison of contents of As, Cr, Cu, Hg, Ni, Pb and Zn of soil samples with standard values, the reference soil sample and local background values of underlying sediments was performed. The soil samples are unpolluted regarding to contents of As, Hg, Pb and Zn. All samples have higher contents of Cr and Ni, whereas three samples have higher content of Cu than the limit standard values. Geochemical parameters showed that higher concentration of Cr, Cu and Ni in soils can be attributed to geogenic impact. This conclusion is supported by Chemical Proxy of Alteration and Chemical Index of Weathering values, which indicate intense weathering of sediments. The obtained results show that Kremna area is under slight to moderate hazard if land use change would occur, and prove the importance of geochemical composition of underlying sediments in the interpretation of heavy metal pollution.
T2  - Journal of the Serbian Chemical Society
T1  - Geochemical investigation as a tool in determining of the potential hazard for soil contamination (Kremna Basin, Serbia)
VL  - 79
IS  - 11
SP  - 1
EP  - 22
DO  - 10.2298/JSC140917108P
ER  - 

@article{
author = "Perunović, Tamara and Stojanović, Ksenija A. and Kašanin-Grubin, Milica and Šajnović, Aleksandra and Simić, Vladimir and Jovančićević, Branimir and Brčeski, Ilija",
year = "2014",
abstract = "Geochemical composition of soils and underlying sediments in the Kremna Basin was investigated. The aim was to assess whether observed heavy metal concentrations in soil samples represent geogenic or anthropogenic contamination. The second objective is to show that geochemical data of underlying sediments should be used as a tool in determining of potential hazard for soil contamination. For this purpose, comparison of contents of As, Cr, Cu, Hg, Ni, Pb and Zn of soil samples with standard values, the reference soil sample and local background values of underlying sediments was performed. The soil samples are unpolluted regarding to contents of As, Hg, Pb and Zn. All samples have higher contents of Cr and Ni, whereas three samples have higher content of Cu than the limit standard values. Geochemical parameters showed that higher concentration of Cr, Cu and Ni in soils can be attributed to geogenic impact. This conclusion is supported by Chemical Proxy of Alteration and Chemical Index of Weathering values, which indicate intense weathering of sediments. The obtained results show that Kremna area is under slight to moderate hazard if land use change would occur, and prove the importance of geochemical composition of underlying sediments in the interpretation of heavy metal pollution.",
journal = "Journal of the Serbian Chemical Society",
title = "Geochemical investigation as a tool in determining of the potential hazard for soil contamination (Kremna Basin, Serbia)",
volume = "79",
number = "11",
pages = "1-22",
doi = "10.2298/JSC140917108P"
}

Perunović, T., Stojanović, K. A., Kašanin-Grubin, M., Šajnović, A., Simić, V., Jovančićević, B.,& Brčeski, I.. (2014). Geochemical investigation as a tool in determining of the potential hazard for soil contamination (Kremna Basin, Serbia). in Journal of the Serbian Chemical Society, 79(11), 1-22.
https://doi.org/10.2298/JSC140917108P

Perunović T, Stojanović KA, Kašanin-Grubin M, Šajnović A, Simić V, Jovančićević B, Brčeski I. Geochemical investigation as a tool in determining of the potential hazard for soil contamination (Kremna Basin, Serbia). in Journal of the Serbian Chemical Society. 2014;79(11):1-22.
doi:10.2298/JSC140917108P .

Perunović, Tamara, Stojanović, Ksenija A., Kašanin-Grubin, Milica, Šajnović, Aleksandra, Simić, Vladimir, Jovančićević, Branimir, Brčeski, Ilija, "Geochemical investigation as a tool in determining of the potential hazard for soil contamination (Kremna Basin, Serbia)" in Journal of the Serbian Chemical Society, 79, no. 11 (2014):1-22,
https://doi.org/10.2298/JSC140917108P . .

TY  - JOUR
AU  - Životić, Dragana R.
AU  - Stojanović, Ksenija A.
AU  - Gržetić, Ivan
AU  - Jovančićević, Branimir
AU  - Cvetković, Olga
AU  - Šajnović, Aleksandra
AU  - Simić, Vladimir
AU  - Stojakovic, Rajko
AU  - Scheeder, Georg
PY  - 2013
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1636
AB  - The Upper Miocene lignite from the Main coal seam in the D field, Kolubara basin, is a typical humic coal with huminite, liptinite and inertinite concentrations of up to 83.7 vol.%, 17.2 vol.% and 15.5 vol.%, respectively. In the huminite group, textinite and ulminite are the most abundant macerals with variable amounts of densinite and attrinite. Liptodetrinite and sporinite are the most common macerals of the liptinite group, while inertodetrinite is the most abundant maceral of the inertinite group. The mineral matter consists mostly of clay minerals. The main sources of organic matter were gymnosperms (conifers) and microbial biomass, followed by angiosperms. Based on composition of saturated and aromatic diterpenoids it has been established that coal forming plants belonged to the gymnosperm families Taxodiaceae, Podocarpaceae, Cupressaceae, Araucariaceae, Phyllocladaceae and Pinaceae. Peatification occurred in neutral to slightly acidic, fresh water environment Composition and distribution of biomarkers show that diagenetic changes of the organic matter were mainly governed by bacterial activity in a suboxic to oxic environment Based on distribution of aromatic diterpenoids a novel diagenetic pathway for transformation of abietane-type precursors under suboxic to oxic conditions is proposed. Variations in compositions of macerals and biomarkers are in concordance with pronounced seasonality during Pontian, which caused changes in the water level, redox conditions during peatification, and to some extent vegetation differences in the paleo-plant communities.
PB  - Elsevier Science Bv, Amsterdam
T2  - International Journal of Coal Geology
T1  - Petrological and geochemical composition of lignite from the D field, Kolubara basin (Serbia)
VL  - 111
SP  - 5
EP  - 22
DO  - 10.1016/j.coal.2012.10.014
ER  - 

@article{
author = "Životić, Dragana R. and Stojanović, Ksenija A. and Gržetić, Ivan and Jovančićević, Branimir and Cvetković, Olga and Šajnović, Aleksandra and Simić, Vladimir and Stojakovic, Rajko and Scheeder, Georg",
year = "2013",
abstract = "The Upper Miocene lignite from the Main coal seam in the D field, Kolubara basin, is a typical humic coal with huminite, liptinite and inertinite concentrations of up to 83.7 vol.%, 17.2 vol.% and 15.5 vol.%, respectively. In the huminite group, textinite and ulminite are the most abundant macerals with variable amounts of densinite and attrinite. Liptodetrinite and sporinite are the most common macerals of the liptinite group, while inertodetrinite is the most abundant maceral of the inertinite group. The mineral matter consists mostly of clay minerals. The main sources of organic matter were gymnosperms (conifers) and microbial biomass, followed by angiosperms. Based on composition of saturated and aromatic diterpenoids it has been established that coal forming plants belonged to the gymnosperm families Taxodiaceae, Podocarpaceae, Cupressaceae, Araucariaceae, Phyllocladaceae and Pinaceae. Peatification occurred in neutral to slightly acidic, fresh water environment Composition and distribution of biomarkers show that diagenetic changes of the organic matter were mainly governed by bacterial activity in a suboxic to oxic environment Based on distribution of aromatic diterpenoids a novel diagenetic pathway for transformation of abietane-type precursors under suboxic to oxic conditions is proposed. Variations in compositions of macerals and biomarkers are in concordance with pronounced seasonality during Pontian, which caused changes in the water level, redox conditions during peatification, and to some extent vegetation differences in the paleo-plant communities.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "International Journal of Coal Geology",
title = "Petrological and geochemical composition of lignite from the D field, Kolubara basin (Serbia)",
volume = "111",
pages = "5-22",
doi = "10.1016/j.coal.2012.10.014"
}

Životić, D. R., Stojanović, K. A., Gržetić, I., Jovančićević, B., Cvetković, O., Šajnović, A., Simić, V., Stojakovic, R.,& Scheeder, G.. (2013). Petrological and geochemical composition of lignite from the D field, Kolubara basin (Serbia). in International Journal of Coal Geology
Elsevier Science Bv, Amsterdam., 111, 5-22.
https://doi.org/10.1016/j.coal.2012.10.014

Životić DR, Stojanović KA, Gržetić I, Jovančićević B, Cvetković O, Šajnović A, Simić V, Stojakovic R, Scheeder G. Petrological and geochemical composition of lignite from the D field, Kolubara basin (Serbia). in International Journal of Coal Geology. 2013;111:5-22.
doi:10.1016/j.coal.2012.10.014 .

Životić, Dragana R., Stojanović, Ksenija A., Gržetić, Ivan, Jovančićević, Branimir, Cvetković, Olga, Šajnović, Aleksandra, Simić, Vladimir, Stojakovic, Rajko, Scheeder, Georg, "Petrological and geochemical composition of lignite from the D field, Kolubara basin (Serbia)" in International Journal of Coal Geology, 111 (2013):5-22,
https://doi.org/10.1016/j.coal.2012.10.014 . .