TY  - JOUR
AU  - Dević, Gordana N.
AU  - Ilić, Mila
AU  - Zildžović, Snežana
AU  - Avdalović, Jelena
AU  - Miletić, Srđan B.
AU  - Bulatović, Sandra
AU  - Vrvić, Miroslav
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4971
AB  - Concentrations of 10 potentially toxic trace elements were measured in soil samples collected from 18 sites in urban areas of Belgrade, the capital and the largest city in Serbia. Samples were analysed in order to assess the extent of soil contamination and to distinguish natural and anthropogenic input. The results demonstrated a general Zn, Pb, and Cd enrichment in surface samples, hence, after comparison with guidelines, it has been determined that there is a potential risk for human health. In the surface and buried samples, traces of cooper were detected. The highest concentrations of Cr (121 ± 12.3 mg/kg) and Ni (94.9 ± 12.6 mg/kg) were found at a sediment depth of 2 m and should be ascribed to geogenic sources. The results of HCA and PCA analysis supported a natural origin of Co, Cu, Mn, Cr, and Ni, while Cd, Zn, and Pb originated from anthropogenic inputs. Based on the pollution indices, Cd made the most dominant contribution, posing a high contamination risk in the studied area. Results of Nemerow pollution index (PIN) and potential ecological risk index (PER) demonstrated that pollution by heavy metals in sediments on several sites is moderately intense.
PB  - Taylor & Francis Group LLC
T2  - Journal of Environmental Science and Health, Part A
T1  - Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia
VL  - 55
IS  - 6
SP  - 765
EP  - 775
DO  - 10.1080/10934529.2020.1741999
ER  - 

@article{
author = "Dević, Gordana N. and Ilić, Mila and Zildžović, Snežana and Avdalović, Jelena and Miletić, Srđan B. and Bulatović, Sandra and Vrvić, Miroslav",
year = "2020",
abstract = "Concentrations of 10 potentially toxic trace elements were measured in soil samples collected from 18 sites in urban areas of Belgrade, the capital and the largest city in Serbia. Samples were analysed in order to assess the extent of soil contamination and to distinguish natural and anthropogenic input. The results demonstrated a general Zn, Pb, and Cd enrichment in surface samples, hence, after comparison with guidelines, it has been determined that there is a potential risk for human health. In the surface and buried samples, traces of cooper were detected. The highest concentrations of Cr (121 ± 12.3 mg/kg) and Ni (94.9 ± 12.6 mg/kg) were found at a sediment depth of 2 m and should be ascribed to geogenic sources. The results of HCA and PCA analysis supported a natural origin of Co, Cu, Mn, Cr, and Ni, while Cd, Zn, and Pb originated from anthropogenic inputs. Based on the pollution indices, Cd made the most dominant contribution, posing a high contamination risk in the studied area. Results of Nemerow pollution index (PIN) and potential ecological risk index (PER) demonstrated that pollution by heavy metals in sediments on several sites is moderately intense.",
publisher = "Taylor & Francis Group LLC",
journal = "Journal of Environmental Science and Health, Part A",
title = "Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia",
volume = "55",
number = "6",
pages = "765-775",
doi = "10.1080/10934529.2020.1741999"
}

Dević, G. N., Ilić, M., Zildžović, S., Avdalović, J., Miletić, S. B., Bulatović, S.,& Vrvić, M.. (2020). Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia. in Journal of Environmental Science and Health, Part A
Taylor & Francis Group LLC., 55(6), 765-775.
https://doi.org/10.1080/10934529.2020.1741999

Dević GN, Ilić M, Zildžović S, Avdalović J, Miletić SB, Bulatović S, Vrvić M. Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia. in Journal of Environmental Science and Health, Part A. 2020;55(6):765-775.
doi:10.1080/10934529.2020.1741999 .

Dević, Gordana N., Ilić, Mila, Zildžović, Snežana, Avdalović, Jelena, Miletić, Srđan B., Bulatović, Sandra, Vrvić, Miroslav, "Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia" in Journal of Environmental Science and Health, Part A, 55, no. 6 (2020):765-775,
https://doi.org/10.1080/10934529.2020.1741999 . .

TY  - DATA
AU  - Sakan, Sanja M.
AU  - Dević, Gordana N.
AU  - Relić, Dubravka
AU  - Anđelković, Ivan
AU  - Sakan, Nenad
AU  - Đorđević, Dragana S.
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3409
PB  - Springer, New York
T2  - Environmental Earth Sciences
T1  - Supplementary data for article: Sakan, S.; Dević, G.; Relić, D.; Anđelković, I.; Sakan, N.; Đorđević, D. Risk Assessment of Trace Element Contamination in River Sediments in Serbia Using Pollution Indices and Statistical Methods: A Pilot Study. Environmental Earth Sciences 2015, 73 (10), 6625–6638. https://doi.org/10.1007/s12665-014-3886-1
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3409
ER  - 

@misc{
author = "Sakan, Sanja M. and Dević, Gordana N. and Relić, Dubravka and Anđelković, Ivan and Sakan, Nenad and Đorđević, Dragana S.",
year = "2015",
publisher = "Springer, New York",
journal = "Environmental Earth Sciences",
title = "Supplementary data for article: Sakan, S.; Dević, G.; Relić, D.; Anđelković, I.; Sakan, N.; Đorđević, D. Risk Assessment of Trace Element Contamination in River Sediments in Serbia Using Pollution Indices and Statistical Methods: A Pilot Study. Environmental Earth Sciences 2015, 73 (10), 6625–6638. https://doi.org/10.1007/s12665-014-3886-1",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3409"
}

Sakan, S. M., Dević, G. N., Relić, D., Anđelković, I., Sakan, N.,& Đorđević, D. S.. (2015). Supplementary data for article: Sakan, S.; Dević, G.; Relić, D.; Anđelković, I.; Sakan, N.; Đorđević, D. Risk Assessment of Trace Element Contamination in River Sediments in Serbia Using Pollution Indices and Statistical Methods: A Pilot Study. Environmental Earth Sciences 2015, 73 (10), 6625–6638. https://doi.org/10.1007/s12665-014-3886-1. in Environmental Earth Sciences
Springer, New York..
https://hdl.handle.net/21.15107/rcub_cherry_3409

Sakan SM, Dević GN, Relić D, Anđelković I, Sakan N, Đorđević DS. Supplementary data for article: Sakan, S.; Dević, G.; Relić, D.; Anđelković, I.; Sakan, N.; Đorđević, D. Risk Assessment of Trace Element Contamination in River Sediments in Serbia Using Pollution Indices and Statistical Methods: A Pilot Study. Environmental Earth Sciences 2015, 73 (10), 6625–6638. https://doi.org/10.1007/s12665-014-3886-1. in Environmental Earth Sciences. 2015;.
https://hdl.handle.net/21.15107/rcub_cherry_3409 .

Sakan, Sanja M., Dević, Gordana N., Relić, Dubravka, Anđelković, Ivan, Sakan, Nenad, Đorđević, Dragana S., "Supplementary data for article: Sakan, S.; Dević, G.; Relić, D.; Anđelković, I.; Sakan, N.; Đorđević, D. Risk Assessment of Trace Element Contamination in River Sediments in Serbia Using Pollution Indices and Statistical Methods: A Pilot Study. Environmental Earth Sciences 2015, 73 (10), 6625–6638. https://doi.org/10.1007/s12665-014-3886-1" in Environmental Earth Sciences (2015),
https://hdl.handle.net/21.15107/rcub_cherry_3409 .

TY  - JOUR
AU  - Sakan, Sanja M.
AU  - Dević, Gordana N.
AU  - Relić, Dubravka
AU  - Anđelković, Ivan
AU  - Sakan, Nenad
AU  - Đorđević, Dragana S.
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1684
AB  - In the present study, concentrations of heavy metals (Cd, Cu, Co, Mn, Cr, Ni, Pb, and Zn) were determined at 35 river sediments in Serbia. The anthropogenic heavy metals input and quantification of the metal enrichment degree in sediments were estimated by calculating geo-accumulation indices (I-geo) and enrichment factors (EF). These pollution indices have been calculated using different background values (continental crust and local background values) and different element used for normalization (Al and Fe), followed by result comparison. The EF values calculated with continental crust as background (minor to extremely severe enrichment) were higher than when regional background values were used (minor to moderate enrichment). Significant influence of background values on the I-geo values is observed. Values of geo-accumulation index ( lt 2) revealed that studied river sediments are remaining unpolluted to moderately polluted with Co, Mn, Cr, and Ni. Significant pollution in the sediments was observed for Cd, Cu, Pb, and Zn elements. The results of this study confirm the relevance of precise and accurate determining of local background concentrations while assessing sediment pollution. The values of EFs for studied elements were more influenced by the choice of background values than selection of element used for normalization. Our recommendation would be to use the local and regional background content in quantification of metal contamination in sediments, since these values differ and are site and region dependent.
PB  - Springer, Dordrecht
T2  - Environmental Geochemistry and Health
T1  - Evaluation of sediment contamination with heavy metals: the importance of determining appropriate background content and suitable element for normalization
VL  - 37
IS  - 1
SP  - 97
EP  - 113
DO  - 10.1007/s10653-014-9633-4
ER  - 

@article{
author = "Sakan, Sanja M. and Dević, Gordana N. and Relić, Dubravka and Anđelković, Ivan and Sakan, Nenad and Đorđević, Dragana S.",
year = "2015",
abstract = "In the present study, concentrations of heavy metals (Cd, Cu, Co, Mn, Cr, Ni, Pb, and Zn) were determined at 35 river sediments in Serbia. The anthropogenic heavy metals input and quantification of the metal enrichment degree in sediments were estimated by calculating geo-accumulation indices (I-geo) and enrichment factors (EF). These pollution indices have been calculated using different background values (continental crust and local background values) and different element used for normalization (Al and Fe), followed by result comparison. The EF values calculated with continental crust as background (minor to extremely severe enrichment) were higher than when regional background values were used (minor to moderate enrichment). Significant influence of background values on the I-geo values is observed. Values of geo-accumulation index ( lt 2) revealed that studied river sediments are remaining unpolluted to moderately polluted with Co, Mn, Cr, and Ni. Significant pollution in the sediments was observed for Cd, Cu, Pb, and Zn elements. The results of this study confirm the relevance of precise and accurate determining of local background concentrations while assessing sediment pollution. The values of EFs for studied elements were more influenced by the choice of background values than selection of element used for normalization. Our recommendation would be to use the local and regional background content in quantification of metal contamination in sediments, since these values differ and are site and region dependent.",
publisher = "Springer, Dordrecht",
journal = "Environmental Geochemistry and Health",
title = "Evaluation of sediment contamination with heavy metals: the importance of determining appropriate background content and suitable element for normalization",
volume = "37",
number = "1",
pages = "97-113",
doi = "10.1007/s10653-014-9633-4"
}

Sakan, S. M., Dević, G. N., Relić, D., Anđelković, I., Sakan, N.,& Đorđević, D. S.. (2015). Evaluation of sediment contamination with heavy metals: the importance of determining appropriate background content and suitable element for normalization. in Environmental Geochemistry and Health
Springer, Dordrecht., 37(1), 97-113.
https://doi.org/10.1007/s10653-014-9633-4

Sakan SM, Dević GN, Relić D, Anđelković I, Sakan N, Đorđević DS. Evaluation of sediment contamination with heavy metals: the importance of determining appropriate background content and suitable element for normalization. in Environmental Geochemistry and Health. 2015;37(1):97-113.
doi:10.1007/s10653-014-9633-4 .

Sakan, Sanja M., Dević, Gordana N., Relić, Dubravka, Anđelković, Ivan, Sakan, Nenad, Đorđević, Dragana S., "Evaluation of sediment contamination with heavy metals: the importance of determining appropriate background content and suitable element for normalization" in Environmental Geochemistry and Health, 37, no. 1 (2015):97-113,
https://doi.org/10.1007/s10653-014-9633-4 . .

TY  - JOUR
AU  - Sakan, Sanja M.
AU  - Dević, Gordana N.
AU  - Relić, Dubravka
AU  - Anđelković, Ivan
AU  - Sakan, Nenad
AU  - Đorđević, Dragana S.
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1701
AB  - To effectively manage potential environmental and human health impacts of contaminated river sediments, it is important that information about the source (anthropogenic vs geogenic), variability and environmental risks associated with the contamination are well understood. The present study was carried out to assess the source and severity of contamination and to undertake a risk assessment for selected elements (As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, V and Zn) in river sediments in Serbia. The estimate of the anthropogenic component of contamination was derived by determining the total element content and the background values for elements in sediments, and the severity of pollution was assessed by calculating a number of pollution indices including the contamination factor, the enrichment factor, the index of geoaccumulation, the ecological risk factor, the potential ecological risk index, the pollution load index, the combined pollution index, the modified degree of contamination and the toxic unit factor. This analysis indicates that river sediments in Serbia are primarily polluted with Zn, Cu and Cd. The most contaminated river systems are the Ibar, Pek, West Morava and Great Morava rivers. Mining activities were found to have a significant influence on sediment. Multivariate analyses suggested anthropogenic origins for Pb, Zn, Cd, As, Ni and Cu, whilst Fe, V, Mn, Co and Cr appear to have a mixed origin (both lithogenic and anthropogenic sources). A geochemical approach, with a calculation of pollution indices and statistical methods, is recognised as useful for the risk management of trace elements in sediments around the world.
PB  - Springer, New York
T2  - Environmental Earth Sciences
T1  - Risk assessment of trace element contamination in river sediments in Serbia using pollution indices and statistical methods: a pilot study
VL  - 73
IS  - 10
SP  - 6625
EP  - 6638
DO  - 10.1007/s12665-014-3886-1
ER  - 

@article{
author = "Sakan, Sanja M. and Dević, Gordana N. and Relić, Dubravka and Anđelković, Ivan and Sakan, Nenad and Đorđević, Dragana S.",
year = "2015",
abstract = "To effectively manage potential environmental and human health impacts of contaminated river sediments, it is important that information about the source (anthropogenic vs geogenic), variability and environmental risks associated with the contamination are well understood. The present study was carried out to assess the source and severity of contamination and to undertake a risk assessment for selected elements (As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, V and Zn) in river sediments in Serbia. The estimate of the anthropogenic component of contamination was derived by determining the total element content and the background values for elements in sediments, and the severity of pollution was assessed by calculating a number of pollution indices including the contamination factor, the enrichment factor, the index of geoaccumulation, the ecological risk factor, the potential ecological risk index, the pollution load index, the combined pollution index, the modified degree of contamination and the toxic unit factor. This analysis indicates that river sediments in Serbia are primarily polluted with Zn, Cu and Cd. The most contaminated river systems are the Ibar, Pek, West Morava and Great Morava rivers. Mining activities were found to have a significant influence on sediment. Multivariate analyses suggested anthropogenic origins for Pb, Zn, Cd, As, Ni and Cu, whilst Fe, V, Mn, Co and Cr appear to have a mixed origin (both lithogenic and anthropogenic sources). A geochemical approach, with a calculation of pollution indices and statistical methods, is recognised as useful for the risk management of trace elements in sediments around the world.",
publisher = "Springer, New York",
journal = "Environmental Earth Sciences",
title = "Risk assessment of trace element contamination in river sediments in Serbia using pollution indices and statistical methods: a pilot study",
volume = "73",
number = "10",
pages = "6625-6638",
doi = "10.1007/s12665-014-3886-1"
}

Sakan, S. M., Dević, G. N., Relić, D., Anđelković, I., Sakan, N.,& Đorđević, D. S.. (2015). Risk assessment of trace element contamination in river sediments in Serbia using pollution indices and statistical methods: a pilot study. in Environmental Earth Sciences
Springer, New York., 73(10), 6625-6638.
https://doi.org/10.1007/s12665-014-3886-1

Sakan SM, Dević GN, Relić D, Anđelković I, Sakan N, Đorđević DS. Risk assessment of trace element contamination in river sediments in Serbia using pollution indices and statistical methods: a pilot study. in Environmental Earth Sciences. 2015;73(10):6625-6638.
doi:10.1007/s12665-014-3886-1 .

Sakan, Sanja M., Dević, Gordana N., Relić, Dubravka, Anđelković, Ivan, Sakan, Nenad, Đorđević, Dragana S., "Risk assessment of trace element contamination in river sediments in Serbia using pollution indices and statistical methods: a pilot study" in Environmental Earth Sciences, 73, no. 10 (2015):6625-6638,
https://doi.org/10.1007/s12665-014-3886-1 . .

TY  - JOUR
AU  - Sakan, Sanja M.
AU  - Dević, Gordana N.
AU  - Relić, Dubravka
AU  - Anđelković, Ivan
AU  - Sakan, Nenad
AU  - Đorđević, Dragana S.
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1724
AB  - The purpose of this study was to evaluate sediment heavy metals (Cd, Cu, Co, Mn, Cr, Ni, Pb and Zn) related to pollution in freshwater sediments in Serbia. The heavy metal enrichment determination in studied sediments was conducted by using total metal content with strong acidic digestion (HCl + HNO3 + HF), a calculated enrichment factor (EF), and application of correlation analysis and the box plot method. For identification of appropriate elemental normalisers for enrichment factor calculations, Fe, Al, Ti and Si were used. The significant variation in heavy metal distribution among samples collected in this large region, encompassing all Serbian watersheds, suggests the selective contamination of sediments by heavy metals. Values for EF indicate nil to moderate enrichment for most studied elements, except for Cd, Cu, and Zn at some sampling points, where the enrichment was, in some cases, even severe. The high content of heavy metals and EFs in Serbia is related to the human activities around the sampling sites. The results indicate that all elements used for normalisation in this paper can also be used to estimate the anthropogenic influence, with an exception of Co, which should be considered as an element for normalisation in future studies.
PB  - Wiley-Blackwell, Hoboken
T2  - CLEAN - Soil Air Water
T1  - Environmental Assessment of Heavy Metal Pollution in Freshwater Sediment, Serbia
VL  - 43
IS  - 6
SP  - 838
EP  - 845
DO  - 10.1002/clen.201400275
ER  - 

@article{
author = "Sakan, Sanja M. and Dević, Gordana N. and Relić, Dubravka and Anđelković, Ivan and Sakan, Nenad and Đorđević, Dragana S.",
year = "2015",
abstract = "The purpose of this study was to evaluate sediment heavy metals (Cd, Cu, Co, Mn, Cr, Ni, Pb and Zn) related to pollution in freshwater sediments in Serbia. The heavy metal enrichment determination in studied sediments was conducted by using total metal content with strong acidic digestion (HCl + HNO3 + HF), a calculated enrichment factor (EF), and application of correlation analysis and the box plot method. For identification of appropriate elemental normalisers for enrichment factor calculations, Fe, Al, Ti and Si were used. The significant variation in heavy metal distribution among samples collected in this large region, encompassing all Serbian watersheds, suggests the selective contamination of sediments by heavy metals. Values for EF indicate nil to moderate enrichment for most studied elements, except for Cd, Cu, and Zn at some sampling points, where the enrichment was, in some cases, even severe. The high content of heavy metals and EFs in Serbia is related to the human activities around the sampling sites. The results indicate that all elements used for normalisation in this paper can also be used to estimate the anthropogenic influence, with an exception of Co, which should be considered as an element for normalisation in future studies.",
publisher = "Wiley-Blackwell, Hoboken",
journal = "CLEAN - Soil Air Water",
title = "Environmental Assessment of Heavy Metal Pollution in Freshwater Sediment, Serbia",
volume = "43",
number = "6",
pages = "838-845",
doi = "10.1002/clen.201400275"
}

Sakan, S. M., Dević, G. N., Relić, D., Anđelković, I., Sakan, N.,& Đorđević, D. S.. (2015). Environmental Assessment of Heavy Metal Pollution in Freshwater Sediment, Serbia. in CLEAN - Soil Air Water
Wiley-Blackwell, Hoboken., 43(6), 838-845.
https://doi.org/10.1002/clen.201400275

Sakan SM, Dević GN, Relić D, Anđelković I, Sakan N, Đorđević DS. Environmental Assessment of Heavy Metal Pollution in Freshwater Sediment, Serbia. in CLEAN - Soil Air Water. 2015;43(6):838-845.
doi:10.1002/clen.201400275 .

Sakan, Sanja M., Dević, Gordana N., Relić, Dubravka, Anđelković, Ivan, Sakan, Nenad, Đorđević, Dragana S., "Environmental Assessment of Heavy Metal Pollution in Freshwater Sediment, Serbia" in CLEAN - Soil Air Water, 43, no. 6 (2015):838-845,
https://doi.org/10.1002/clen.201400275 . .

TY  - JOUR
AU  - Sakan, Sanja M.
AU  - Đorđević, Dragana S.
AU  - Dević, Gordana N.
AU  - Relić, Dubravka
AU  - Anđelković, Ivan
AU  - Duricic, Jelena
PY  - 2011
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1209
AB  - The aim of this study was the evaluation of the trace element contamination level in sediments of the most important rivers in Serbia and their tributaries. The determination of the aqua regia soluble contents of 12 micro- and macro-elements (Ca, Cd, Co, Cr, Cu, Fe, Mn, Pb, Ni, Zn, Be and V) in sediments was developed by the microwave digestion technique combined with inductively coupled plasma atomic emission spectrometry. Correlation analysis and principal component analysis distinguishes factors of lithogenic and anthropogenic origins. The Fe, Mn, Be and V contents are controlled by a regional lithogenic high background factor, while Cd, Cr, Pb, Ni, Zn and Cu are recognized as tracer of pollution. For Co, mixed sources from both lithogenic and anthropogenic inputs were evidenced. The investigated sediment of the major rivers and their tributaries in Serbia showed high concentrations of metals, especially of Cd, Pb, Cu and Zn, which may cause serious environmental impacts. Rivers which flow into the Danube from its entrance into Serbia significantly influence the chemical load of the water and sediments. The experimental study was conducted using two BCR standard reference materials. The calculated accuracy and precision confirmed the good performance of the adopted procedures.
PB  - Elsevier Science Bv, Amsterdam
T2  - Microchemical Journal
T1  - A study of trace element contamination in river sediments in Serbia using microwave-assisted aqua regia digestion and multivariate statistical analysis
VL  - 99
IS  - 2
SP  - 492
EP  - 502
DO  - 10.1016/j.microc.2011.06.027
ER  - 

@article{
author = "Sakan, Sanja M. and Đorđević, Dragana S. and Dević, Gordana N. and Relić, Dubravka and Anđelković, Ivan and Duricic, Jelena",
year = "2011",
abstract = "The aim of this study was the evaluation of the trace element contamination level in sediments of the most important rivers in Serbia and their tributaries. The determination of the aqua regia soluble contents of 12 micro- and macro-elements (Ca, Cd, Co, Cr, Cu, Fe, Mn, Pb, Ni, Zn, Be and V) in sediments was developed by the microwave digestion technique combined with inductively coupled plasma atomic emission spectrometry. Correlation analysis and principal component analysis distinguishes factors of lithogenic and anthropogenic origins. The Fe, Mn, Be and V contents are controlled by a regional lithogenic high background factor, while Cd, Cr, Pb, Ni, Zn and Cu are recognized as tracer of pollution. For Co, mixed sources from both lithogenic and anthropogenic inputs were evidenced. The investigated sediment of the major rivers and their tributaries in Serbia showed high concentrations of metals, especially of Cd, Pb, Cu and Zn, which may cause serious environmental impacts. Rivers which flow into the Danube from its entrance into Serbia significantly influence the chemical load of the water and sediments. The experimental study was conducted using two BCR standard reference materials. The calculated accuracy and precision confirmed the good performance of the adopted procedures.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Microchemical Journal",
title = "A study of trace element contamination in river sediments in Serbia using microwave-assisted aqua regia digestion and multivariate statistical analysis",
volume = "99",
number = "2",
pages = "492-502",
doi = "10.1016/j.microc.2011.06.027"
}

Sakan, S. M., Đorđević, D. S., Dević, G. N., Relić, D., Anđelković, I.,& Duricic, J.. (2011). A study of trace element contamination in river sediments in Serbia using microwave-assisted aqua regia digestion and multivariate statistical analysis. in Microchemical Journal
Elsevier Science Bv, Amsterdam., 99(2), 492-502.
https://doi.org/10.1016/j.microc.2011.06.027

Sakan SM, Đorđević DS, Dević GN, Relić D, Anđelković I, Duricic J. A study of trace element contamination in river sediments in Serbia using microwave-assisted aqua regia digestion and multivariate statistical analysis. in Microchemical Journal. 2011;99(2):492-502.
doi:10.1016/j.microc.2011.06.027 .

Sakan, Sanja M., Đorđević, Dragana S., Dević, Gordana N., Relić, Dubravka, Anđelković, Ivan, Duricic, Jelena, "A study of trace element contamination in river sediments in Serbia using microwave-assisted aqua regia digestion and multivariate statistical analysis" in Microchemical Journal, 99, no. 2 (2011):492-502,
https://doi.org/10.1016/j.microc.2011.06.027 . .

TY  - JOUR
AU  - Dević, Gordana N.
AU  - Jovančićević, Branimir
PY  - 2008
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/599
AB  - The composition of the saturated hydrocarbon fraction of soluble organic matter (bitumen) from the Krepoljin brown coal basin (East Serbia) of Miocene age was investigated. The Krepoljin basin is especially interesting from a geochemical point of view. Namely, by the end of Tertiary Period, the basin was covered by powerful Mesozoic formations of great possibilities, the bedding became hermetically enclosed and protected from subsequent external influences. The nature of early diagenetic processes in the environment with abundant accumulation of organic substance is defined by the molecular content of bitumen through the connections of molecular structures to potential precursors in paleoplant phylla, as well as by the degree of their diagenetic transformations. The hierarchy of parameters based on molecules of saturated hydrocarbons was determined by applying the principal component analysis to the soluble organic matter. The most significant, most "loadings" values of component C1, are the plant types such as precursors or participants in early diagenetic transformations of steranes Cs(27)-algal precursor material, Cs(28)-moulds, Cs(29)-higher land and water plants; resinous from the group of higher plant gymnosperms (G); also triterpanes alpha and beta-amirin-dicotyledonous angiosperms (A) and bacterial and/or terrestrial plants population represented by hopanes/moretanes; as well as the parameters which describe the degree of diagenetic/maturation transformation of precursor biomass, and based on next reactions: (1) shifting of methyl group, influenced by the inorganic sediment constitutents, sterane-rearranged steranes, (2) isomerization in the ring system, alpha alpha alpha - gt beta beta beta C(29) sterane as well as (3) isomerization on chiral center of the side chain sequence R - gt  S C(29) sterane S/(S+R). Additionally, a pyrite-derived inhibitory effect on the rearrangment of C(29) steranes must be taken into account, but not on triterpanes reaction. Nonappearance of statistically important correlations, before all with maturational depended parameters, and after all also with source indicators contributies to the affirmation of the newly-suggested parameter alpha-Phyllociadane/S(27) as the real source biomarker of coal. Indicators derived from the distribution and abundance of n-alkanes and isoprenoid alkanes are of less significance in hierarchy of parameters.
PB  - Wiley-Blackwell Publishing, Inc, Malden
T2  - Acta Geologica Sinica. English Edition
T1  - The Diagenesis of Plant Lipids during the Formation of the Krepoljin Coal Basin (Serbia) - Using Multivariate Statistical Analysis in the Saturated Biomarkers
VL  - 82
IS  - 6
SP  - 1168
EP  - 1178
UR  - https://hdl.handle.net/21.15107/rcub_cherry_599
ER  - 

@article{
author = "Dević, Gordana N. and Jovančićević, Branimir",
year = "2008",
abstract = "The composition of the saturated hydrocarbon fraction of soluble organic matter (bitumen) from the Krepoljin brown coal basin (East Serbia) of Miocene age was investigated. The Krepoljin basin is especially interesting from a geochemical point of view. Namely, by the end of Tertiary Period, the basin was covered by powerful Mesozoic formations of great possibilities, the bedding became hermetically enclosed and protected from subsequent external influences. The nature of early diagenetic processes in the environment with abundant accumulation of organic substance is defined by the molecular content of bitumen through the connections of molecular structures to potential precursors in paleoplant phylla, as well as by the degree of their diagenetic transformations. The hierarchy of parameters based on molecules of saturated hydrocarbons was determined by applying the principal component analysis to the soluble organic matter. The most significant, most "loadings" values of component C1, are the plant types such as precursors or participants in early diagenetic transformations of steranes Cs(27)-algal precursor material, Cs(28)-moulds, Cs(29)-higher land and water plants; resinous from the group of higher plant gymnosperms (G); also triterpanes alpha and beta-amirin-dicotyledonous angiosperms (A) and bacterial and/or terrestrial plants population represented by hopanes/moretanes; as well as the parameters which describe the degree of diagenetic/maturation transformation of precursor biomass, and based on next reactions: (1) shifting of methyl group, influenced by the inorganic sediment constitutents, sterane-rearranged steranes, (2) isomerization in the ring system, alpha alpha alpha - gt beta beta beta C(29) sterane as well as (3) isomerization on chiral center of the side chain sequence R - gt  S C(29) sterane S/(S+R). Additionally, a pyrite-derived inhibitory effect on the rearrangment of C(29) steranes must be taken into account, but not on triterpanes reaction. Nonappearance of statistically important correlations, before all with maturational depended parameters, and after all also with source indicators contributies to the affirmation of the newly-suggested parameter alpha-Phyllociadane/S(27) as the real source biomarker of coal. Indicators derived from the distribution and abundance of n-alkanes and isoprenoid alkanes are of less significance in hierarchy of parameters.",
publisher = "Wiley-Blackwell Publishing, Inc, Malden",
journal = "Acta Geologica Sinica. English Edition",
title = "The Diagenesis of Plant Lipids during the Formation of the Krepoljin Coal Basin (Serbia) - Using Multivariate Statistical Analysis in the Saturated Biomarkers",
volume = "82",
number = "6",
pages = "1168-1178",
url = "https://hdl.handle.net/21.15107/rcub_cherry_599"
}

Dević, G. N.,& Jovančićević, B.. (2008). The Diagenesis of Plant Lipids during the Formation of the Krepoljin Coal Basin (Serbia) - Using Multivariate Statistical Analysis in the Saturated Biomarkers. in Acta Geologica Sinica. English Edition
Wiley-Blackwell Publishing, Inc, Malden., 82(6), 1168-1178.
https://hdl.handle.net/21.15107/rcub_cherry_599

Dević GN, Jovančićević B. The Diagenesis of Plant Lipids during the Formation of the Krepoljin Coal Basin (Serbia) - Using Multivariate Statistical Analysis in the Saturated Biomarkers. in Acta Geologica Sinica. English Edition. 2008;82(6):1168-1178.
https://hdl.handle.net/21.15107/rcub_cherry_599 .

Dević, Gordana N., Jovančićević, Branimir, "The Diagenesis of Plant Lipids during the Formation of the Krepoljin Coal Basin (Serbia) - Using Multivariate Statistical Analysis in the Saturated Biomarkers" in Acta Geologica Sinica. English Edition, 82, no. 6 (2008):1168-1178,
https://hdl.handle.net/21.15107/rcub_cherry_599 .

TY  - JOUR
AU  - Dević, Gordana N.
AU  - Pfendt, Petar A.
AU  - Jovančićević, Branimir
AU  - Popović, Zoran
PY  - 2006
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/800
AB  - The early diagenetic characteristics of pyrite formation processes in a Miocene freshwater sequence of mixed sediments (coal fragments in clays, sandstones or shales) alternating with continuous brown coal layers was investigated. Based on abundant minerals, the following main sedimentary environments were distinguished: the illite-montmorillonitic (I-M), calcitic (Ct) and coal-forming environment (CL). For these hydrogeochemically differing environments the effects of limiting factors on the pyrite formation process (availability of sulphate and Fe, amount of organic matter and participation of organic sulphur) were assessed by correlation analysis. Significant differences in the effects of these limiting factors in the particular environments were observed. These differences were explained taking in account the different oxidative activity, Fe-complex and surface complex forming properties of humic substances in dependence of pH of environment and the abundance of sorptionally active clay minerals. In environments having a relatively low pH and containing clay minerals (I-M-and CL-environments) the oxidative activity of humic substances (Hs) on pyrite precursors was greatly prevented however pyrite formation depended on reactive Fe availability as the consequence of complex formation. On the contrary, in environments with a relatively high pH, as it was the calcitic, the oxidative activity of Hs was greatly enhanced, thus oxidizing the sulfur precursors of pyrite. The oxidation degree of organic matter was probably also a consequence of the differing activity of the humic electron-acceptors.
PB  - Geological Soc China, Beijing
T2  - Acta Geologica Sinica. English Edition
T1  - Pyrite formation in organic-rich clay, calcitic and coal-forming environments
VL  - 80
IS  - 4
SP  - 574
EP  - 588
UR  - https://hdl.handle.net/21.15107/rcub_cherry_800
ER  - 

@article{
author = "Dević, Gordana N. and Pfendt, Petar A. and Jovančićević, Branimir and Popović, Zoran",
year = "2006",
abstract = "The early diagenetic characteristics of pyrite formation processes in a Miocene freshwater sequence of mixed sediments (coal fragments in clays, sandstones or shales) alternating with continuous brown coal layers was investigated. Based on abundant minerals, the following main sedimentary environments were distinguished: the illite-montmorillonitic (I-M), calcitic (Ct) and coal-forming environment (CL). For these hydrogeochemically differing environments the effects of limiting factors on the pyrite formation process (availability of sulphate and Fe, amount of organic matter and participation of organic sulphur) were assessed by correlation analysis. Significant differences in the effects of these limiting factors in the particular environments were observed. These differences were explained taking in account the different oxidative activity, Fe-complex and surface complex forming properties of humic substances in dependence of pH of environment and the abundance of sorptionally active clay minerals. In environments having a relatively low pH and containing clay minerals (I-M-and CL-environments) the oxidative activity of humic substances (Hs) on pyrite precursors was greatly prevented however pyrite formation depended on reactive Fe availability as the consequence of complex formation. On the contrary, in environments with a relatively high pH, as it was the calcitic, the oxidative activity of Hs was greatly enhanced, thus oxidizing the sulfur precursors of pyrite. The oxidation degree of organic matter was probably also a consequence of the differing activity of the humic electron-acceptors.",
publisher = "Geological Soc China, Beijing",
journal = "Acta Geologica Sinica. English Edition",
title = "Pyrite formation in organic-rich clay, calcitic and coal-forming environments",
volume = "80",
number = "4",
pages = "574-588",
url = "https://hdl.handle.net/21.15107/rcub_cherry_800"
}

Dević, G. N., Pfendt, P. A., Jovančićević, B.,& Popović, Z.. (2006). Pyrite formation in organic-rich clay, calcitic and coal-forming environments. in Acta Geologica Sinica. English Edition
Geological Soc China, Beijing., 80(4), 574-588.
https://hdl.handle.net/21.15107/rcub_cherry_800

Dević GN, Pfendt PA, Jovančićević B, Popović Z. Pyrite formation in organic-rich clay, calcitic and coal-forming environments. in Acta Geologica Sinica. English Edition. 2006;80(4):574-588.
https://hdl.handle.net/21.15107/rcub_cherry_800 .

Dević, Gordana N., Pfendt, Petar A., Jovančićević, Branimir, Popović, Zoran, "Pyrite formation in organic-rich clay, calcitic and coal-forming environments" in Acta Geologica Sinica. English Edition, 80, no. 4 (2006):574-588,
https://hdl.handle.net/21.15107/rcub_cherry_800 .