TY  - JOUR
AU  - Durka, D.
AU  - Pfendt, Petar A.
AU  - Jovančićević, Branimir
AU  - Cvetković, Olga
AU  - Wehner, H.
PY  - 2005
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/788
AB  - Free and associated bitumens were isolated by sequential extraction from Vlasina lake peat (SE Serbia) and were investigated in order to differentiate between oil pollution and natural bitumens. Four peat samples were collected at different depths, on a peat island. Gas chromatographic (GC) and gas chromatography/mass spectrometry (GC/MS) analysis revealed the presence of three markedly different bitumen fractions. Here we show that the free bitumens are representing the native peat bitumens. The two associated bitumens are mainly the products of bacterial rework of organic substance, which were then trapped by two differing mechanisms. The bitumens characteristics and association features exclude a contribution of oil pollution.
PB  - Springer Heidelberg, Heidelberg
T2  - Environmental Chemistry Letters
T1  - Natural bitumens versus oil pollution in the Vlasina lake peat
VL  - 3
IS  - 1
SP  - 39
EP  - 42
DO  - 10.1007/s10311-005-0110-2
ER  - 

@article{
author = "Durka, D. and Pfendt, Petar A. and Jovančićević, Branimir and Cvetković, Olga and Wehner, H.",
year = "2005",
abstract = "Free and associated bitumens were isolated by sequential extraction from Vlasina lake peat (SE Serbia) and were investigated in order to differentiate between oil pollution and natural bitumens. Four peat samples were collected at different depths, on a peat island. Gas chromatographic (GC) and gas chromatography/mass spectrometry (GC/MS) analysis revealed the presence of three markedly different bitumen fractions. Here we show that the free bitumens are representing the native peat bitumens. The two associated bitumens are mainly the products of bacterial rework of organic substance, which were then trapped by two differing mechanisms. The bitumens characteristics and association features exclude a contribution of oil pollution.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Environmental Chemistry Letters",
title = "Natural bitumens versus oil pollution in the Vlasina lake peat",
volume = "3",
number = "1",
pages = "39-42",
doi = "10.1007/s10311-005-0110-2"
}

Durka, D., Pfendt, P. A., Jovančićević, B., Cvetković, O.,& Wehner, H.. (2005). Natural bitumens versus oil pollution in the Vlasina lake peat. in Environmental Chemistry Letters
Springer Heidelberg, Heidelberg., 3(1), 39-42.
https://doi.org/10.1007/s10311-005-0110-2

Durka D, Pfendt PA, Jovančićević B, Cvetković O, Wehner H. Natural bitumens versus oil pollution in the Vlasina lake peat. in Environmental Chemistry Letters. 2005;3(1):39-42.
doi:10.1007/s10311-005-0110-2 .

Durka, D., Pfendt, Petar A., Jovančićević, Branimir, Cvetković, Olga, Wehner, H., "Natural bitumens versus oil pollution in the Vlasina lake peat" in Environmental Chemistry Letters, 3, no. 1 (2005):39-42,
https://doi.org/10.1007/s10311-005-0110-2 . .

TY  - JOUR
AU  - Šolević-Knudsen, Tatjana
AU  - Jovančićević, Branimir
AU  - Vrvić, Miroslav M.
AU  - Wehner, H.
PY  - 2003
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/547
AB  - The influence of the intensity of interaction between oil pollutants and ground waters in alluvial sediments on the effect of microbial activity was investigated in this work. The study was based on a comparison of detailed analyses of two fractions of an oil pollutant originating from a Danube alluvial formation near the Pancevo Oil Refinery: fraction 1. separated from the aqueous layer by decantation. presumed to have been in less intensive interaction with water. and fraction 2. isolated from the aqueous emulsion by extraction with chloroform. presumed to have been in stronger interaction with water, Both fractions were shown to originate from the same type of oil pollutant. Nevertheless. significant compositional differences between the two fractions were observed. A significantly pronounced domination of even carbon number homologues of C-18-C-24 n-alkanes in fraction 2. atypical for crude oil pollutants, compared to the corresponding distribution observed in fraction 1, suggested a more intense activity. i.e., a much better effect of microorganisms in direct contact with the oil pollutant within the aqueous environment. The identification of even carbon number C-14-C-18 n-alcohols and C-14-C-18 fatty acids, as well as cholesterol, in fraction 2, suggested that microorganisms of the algal type in non-photosynthetic conditions were most probably responsible for the mentioned microbial processes.
AB  - Procenjivan je uticaj intenziteta interakcije između naftnog zagađivača i podzemne vode aluvijalne formacije na intenzitet mikrobiološkog dejstva. U tom cilju poređani su sastavi dve frakcije naftnog zagađivača iz jednog pijezometra (krug Rafinerije nafte Pančevo, aluvijalna formacija reke Dunav): frakcije 1, odvojene od vode dekantovanjem (slabija interakcija sa vodom) i frakcije 2, izdvojene iz vode ekstrakcijom (jača interakcija sa vodom). Dokazano je da obe frakcije vode poreklo od istog naftnog zagađivača. Znatno veća obilnost normalnih alkana sa izrazitom dominacijom parnih homologa (C18–C24) u frakciji 2 nego u frakciji 1 ukazuje na intenzivniju aktivnost mikroorganizama u vodenoj sredini. Alkoholi normalnog niza sa parnim brojem ugljenikovih atoma (C14–C20), holesterol i masne kiseline normalnog niza sa parnim brojem ugljenikovih atoma (C14–C18) u frakciji 2 dokaz su da su za mikrobilošku aktivnost u nefotosintetičkim uslovima odgovorni mikroorganizmi algalnog tipa.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Oil pollutants in alluvial sediments - influence of the intensity of contact with ground waters on the effect of microorganisms
T1  - Naftni zagađivači u aluvijalnim sedimentima - uticaj intenziteta kontakta sa podzemnim vodama na dejstvo mikroorganizama
VL  - 68
IS  - 3
SP  - 227
EP  - 234
DO  - 10.2298/JSC0303227S
ER  - 

@article{
author = "Šolević-Knudsen, Tatjana and Jovančićević, Branimir and Vrvić, Miroslav M. and Wehner, H.",
year = "2003",
abstract = "The influence of the intensity of interaction between oil pollutants and ground waters in alluvial sediments on the effect of microbial activity was investigated in this work. The study was based on a comparison of detailed analyses of two fractions of an oil pollutant originating from a Danube alluvial formation near the Pancevo Oil Refinery: fraction 1. separated from the aqueous layer by decantation. presumed to have been in less intensive interaction with water. and fraction 2. isolated from the aqueous emulsion by extraction with chloroform. presumed to have been in stronger interaction with water, Both fractions were shown to originate from the same type of oil pollutant. Nevertheless. significant compositional differences between the two fractions were observed. A significantly pronounced domination of even carbon number homologues of C-18-C-24 n-alkanes in fraction 2. atypical for crude oil pollutants, compared to the corresponding distribution observed in fraction 1, suggested a more intense activity. i.e., a much better effect of microorganisms in direct contact with the oil pollutant within the aqueous environment. The identification of even carbon number C-14-C-18 n-alcohols and C-14-C-18 fatty acids, as well as cholesterol, in fraction 2, suggested that microorganisms of the algal type in non-photosynthetic conditions were most probably responsible for the mentioned microbial processes., Procenjivan je uticaj intenziteta interakcije između naftnog zagađivača i podzemne vode aluvijalne formacije na intenzitet mikrobiološkog dejstva. U tom cilju poređani su sastavi dve frakcije naftnog zagađivača iz jednog pijezometra (krug Rafinerije nafte Pančevo, aluvijalna formacija reke Dunav): frakcije 1, odvojene od vode dekantovanjem (slabija interakcija sa vodom) i frakcije 2, izdvojene iz vode ekstrakcijom (jača interakcija sa vodom). Dokazano je da obe frakcije vode poreklo od istog naftnog zagađivača. Znatno veća obilnost normalnih alkana sa izrazitom dominacijom parnih homologa (C18–C24) u frakciji 2 nego u frakciji 1 ukazuje na intenzivniju aktivnost mikroorganizama u vodenoj sredini. Alkoholi normalnog niza sa parnim brojem ugljenikovih atoma (C14–C20), holesterol i masne kiseline normalnog niza sa parnim brojem ugljenikovih atoma (C14–C18) u frakciji 2 dokaz su da su za mikrobilošku aktivnost u nefotosintetičkim uslovima odgovorni mikroorganizmi algalnog tipa.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Oil pollutants in alluvial sediments - influence of the intensity of contact with ground waters on the effect of microorganisms, Naftni zagađivači u aluvijalnim sedimentima - uticaj intenziteta kontakta sa podzemnim vodama na dejstvo mikroorganizama",
volume = "68",
number = "3",
pages = "227-234",
doi = "10.2298/JSC0303227S"
}

Šolević-Knudsen, T., Jovančićević, B., Vrvić, M. M.,& Wehner, H.. (2003). Oil pollutants in alluvial sediments - influence of the intensity of contact with ground waters on the effect of microorganisms. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 68(3), 227-234.
https://doi.org/10.2298/JSC0303227S

Šolević-Knudsen T, Jovančićević B, Vrvić MM, Wehner H. Oil pollutants in alluvial sediments - influence of the intensity of contact with ground waters on the effect of microorganisms. in Journal of the Serbian Chemical Society. 2003;68(3):227-234.
doi:10.2298/JSC0303227S .

Šolević-Knudsen, Tatjana, Jovančićević, Branimir, Vrvić, Miroslav M., Wehner, H., "Oil pollutants in alluvial sediments - influence of the intensity of contact with ground waters on the effect of microorganisms" in Journal of the Serbian Chemical Society, 68, no. 3 (2003):227-234,
https://doi.org/10.2298/JSC0303227S . .

TY  - JOUR
AU  - Grujic, S
AU  - Jovančićević, Branimir
AU  - Polić, Predrag S.
AU  - Wehner, H.
PY  - 2003
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/550
AB  - In this paper, biomarkers were applied for identification of oil-type pollutants in surface soil and their microbial changes were investigated. Samples were taken at destroyed fuel storage in Nis (Yugoslavia). Steranes, and triterpanes were used for identification and differentiation of oil-type pollutants in surface soil. n-Alkanes were found to be affected by biodegradation and biosynthesis of "new" even-carbon numbered homologues was observed. Both processes showed differences in intensity, even if layer distances were as small as 25 cm.
PB  - Parlar Scientific Publications (P S P), Freising
T2  - Fresenius Environmental Bulletin
T1  - Biomarkers of oil-type pollutants in surface soil
VL  - 12
IS  - 4
SP  - 359
EP  - 363
UR  - https://hdl.handle.net/21.15107/rcub_cherry_550
ER  - 

@article{
author = "Grujic, S and Jovančićević, Branimir and Polić, Predrag S. and Wehner, H.",
year = "2003",
abstract = "In this paper, biomarkers were applied for identification of oil-type pollutants in surface soil and their microbial changes were investigated. Samples were taken at destroyed fuel storage in Nis (Yugoslavia). Steranes, and triterpanes were used for identification and differentiation of oil-type pollutants in surface soil. n-Alkanes were found to be affected by biodegradation and biosynthesis of "new" even-carbon numbered homologues was observed. Both processes showed differences in intensity, even if layer distances were as small as 25 cm.",
publisher = "Parlar Scientific Publications (P S P), Freising",
journal = "Fresenius Environmental Bulletin",
title = "Biomarkers of oil-type pollutants in surface soil",
volume = "12",
number = "4",
pages = "359-363",
url = "https://hdl.handle.net/21.15107/rcub_cherry_550"
}

Grujic, S., Jovančićević, B., Polić, P. S.,& Wehner, H.. (2003). Biomarkers of oil-type pollutants in surface soil. in Fresenius Environmental Bulletin
Parlar Scientific Publications (P S P), Freising., 12(4), 359-363.
https://hdl.handle.net/21.15107/rcub_cherry_550

Grujic S, Jovančićević B, Polić PS, Wehner H. Biomarkers of oil-type pollutants in surface soil. in Fresenius Environmental Bulletin. 2003;12(4):359-363.
https://hdl.handle.net/21.15107/rcub_cherry_550 .

Grujic, S, Jovančićević, Branimir, Polić, Predrag S., Wehner, H., "Biomarkers of oil-type pollutants in surface soil" in Fresenius Environmental Bulletin, 12, no. 4 (2003):359-363,
https://hdl.handle.net/21.15107/rcub_cherry_550 .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Wehner, H.
AU  - Scheeder, G
AU  - Stojanović, Ksenija A.
AU  - Sainovic, A
AU  - Cvetković, Olga
AU  - Ercegovac, M
AU  - Vitorović, Dragomir K.
PY  - 2002
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/507
AB  - In a search for source rocks of the crude oils of the Drmno depression (Southern part of the Pannonian Basin, Serbia), based on bulk and specific organic geochemical parameters, six out of eight Sirakovo, Bubusinac and Bradarac sedimentary core samples were found to possess typical source rock characteristics. By comparing the results observed for these sedimentary samples with the corresponding propel-ties of the crude oils from the Sirakovo and Bradarac oil-gas fields, a positive organic geochemical oil-source rock correlation was experienced for the first time within this basin. This finding may be considered as an important step towards the ultimate organic geochemical/geological interpretation of the Drmno depression.
AB  - Ispitivani su sedimenti iz bušotina koje pripadaju lokacijama Sirakovo Bubušinac i Bradarac (depresija Drmno). Primenjene su organsko-geohemijske metode (određivanje sadržaja organskog ugljenika, bitumena i ugljovodonika, kao i određivanje raspodele i obilnosti bioloških markera tipa n-alkana izoprenoidnih alifatičnih alkana, triterpana i sterana) sa ciljem da se proceni njihova naftna potencijalnost. Za šest uzoraka utvrđen je visok stepen maturisanosti organske supstance, pripadnost "oil generation" fazi (Rr = 0,70 – 0,80 %), tercijarna starost i pretežno terestrijalno poreklo. Poređenjem sa sirovim naftama iz već otkrivenih naftnih ležišta bliskog lokaliteta (Sirakovo i Bradarac) utvrđena je značajna sličnost i prema maturisanosti i prema poreklu, na osnovu čega je između ispitivanih uzoraka sedimenata i nafti, prvi put kada je u pitanju depresija Drmno, definisana pozitivna korelacija nafta-izvorna stena.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia)
T1  - Traganje za izvornim stenama nafti depresije Drmno, južni deo Panonskog basena, Srbija
VL  - 67
IS  - 8-9
SP  - 553
EP  - 566
DO  - 10.2298/JSC0209553J
ER  - 

@article{
author = "Jovančićević, Branimir and Wehner, H. and Scheeder, G and Stojanović, Ksenija A. and Sainovic, A and Cvetković, Olga and Ercegovac, M and Vitorović, Dragomir K.",
year = "2002",
abstract = "In a search for source rocks of the crude oils of the Drmno depression (Southern part of the Pannonian Basin, Serbia), based on bulk and specific organic geochemical parameters, six out of eight Sirakovo, Bubusinac and Bradarac sedimentary core samples were found to possess typical source rock characteristics. By comparing the results observed for these sedimentary samples with the corresponding propel-ties of the crude oils from the Sirakovo and Bradarac oil-gas fields, a positive organic geochemical oil-source rock correlation was experienced for the first time within this basin. This finding may be considered as an important step towards the ultimate organic geochemical/geological interpretation of the Drmno depression., Ispitivani su sedimenti iz bušotina koje pripadaju lokacijama Sirakovo Bubušinac i Bradarac (depresija Drmno). Primenjene su organsko-geohemijske metode (određivanje sadržaja organskog ugljenika, bitumena i ugljovodonika, kao i određivanje raspodele i obilnosti bioloških markera tipa n-alkana izoprenoidnih alifatičnih alkana, triterpana i sterana) sa ciljem da se proceni njihova naftna potencijalnost. Za šest uzoraka utvrđen je visok stepen maturisanosti organske supstance, pripadnost "oil generation" fazi (Rr = 0,70 – 0,80 %), tercijarna starost i pretežno terestrijalno poreklo. Poređenjem sa sirovim naftama iz već otkrivenih naftnih ležišta bliskog lokaliteta (Sirakovo i Bradarac) utvrđena je značajna sličnost i prema maturisanosti i prema poreklu, na osnovu čega je između ispitivanih uzoraka sedimenata i nafti, prvi put kada je u pitanju depresija Drmno, definisana pozitivna korelacija nafta-izvorna stena.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia), Traganje za izvornim stenama nafti depresije Drmno, južni deo Panonskog basena, Srbija",
volume = "67",
number = "8-9",
pages = "553-566",
doi = "10.2298/JSC0209553J"
}

Jovančićević, B., Wehner, H., Scheeder, G., Stojanović, K. A., Sainovic, A., Cvetković, O., Ercegovac, M.,& Vitorović, D. K.. (2002). Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia). in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 67(8-9), 553-566.
https://doi.org/10.2298/JSC0209553J

Jovančićević B, Wehner H, Scheeder G, Stojanović KA, Sainovic A, Cvetković O, Ercegovac M, Vitorović DK. Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia). in Journal of the Serbian Chemical Society. 2002;67(8-9):553-566.
doi:10.2298/JSC0209553J .

Jovančićević, Branimir, Wehner, H., Scheeder, G, Stojanović, Ksenija A., Sainovic, A, Cvetković, Olga, Ercegovac, M, Vitorović, Dragomir K., "Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia)" in Journal of the Serbian Chemical Society, 67, no. 8-9 (2002):553-566,
https://doi.org/10.2298/JSC0209553J . .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Wehner, H.
AU  - Scheeder, G
AU  - Plecas, D
AU  - Ercegovac, M
AU  - Vitorović, Dragomir K.
PY  - 2001
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/456
AB  - The results of an investigation of crude oils originating from the Sirakovo and Bradarac-Maljurevac localities (southern part of the Pannonian Basin) are reported in this paper. The aim was to estimate the organic geochemical similarity of the crude oils fi om the DI mno (Kostolac) depression oil fields. The nine selected samples originated from reservoir. rocks of various depths. Reliable source and organic geochemical maturation parameters served as the basis for the correlation studies. The similar origin of the investigated DI mno depression crude oils was corroborated, characterized by a significant participation of terrestrial precursor biomass. They were shown to be of relatively low maturity and to have been formed during the earlier stages of the diagenet- ic-catagenetic sequence of processes leading to the formation of crude oils, most probably in source rocks of Tertiary age, corresponding to vitrinite reflectances between Ro = 0.70 % and Ro = 0.80%. The crude oils from Bradarac-Maljurevac seemed to be somewhat less homogeneous with respect to organic geochemical parameters compared to Sirakovo crude oils.
AB  - U ovom radu ispitivani su uzorci sirovih nafti depresije Drmno (Kostolac) sa lokaliteta Sirakovo i Bradarac-Maljurevac. Cilj rada bio je da se proceni organsko-geohemijska ujednačenost nafti naftnih polja depresije Drmno. Izabrani su uzorci koji potiču iz rezervoarskih stena sa različitih dubina i u njima su određeni grupni i specifični izvorni i maturacioni organsko-geohemijski parametri. Potvrđeno je da ispitivani uzorci depresije Drmno imaju slično poreklo koje karakteriše veći udeo terestrijalne prekursorske biomase. Ispitivane nafte su nešto nižeg stepena maturisanosti i nastale su u ranijim fazama dijagenetsko-katagenetske sekvencije formiranja nafte kojima odgovaraju vrednosti refleksije vitrinita između Ro = 0,70 % i Ro = 0,80 %. Najverovatnije su nastale u izvornim stenama tercijarne starosti. Nafte sa lokaliteta Bradarac-Maljurevac karakteriše nešto niži nivo organsko-geohemijske homogenosti nego nafte sa lokaliteta Sirakovo.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - An organic geochemical correlation study of some Drmno depresssion crude oils (southern part of the Pannonian Basin, Yugoslavia)
T1  - Organsko-geohemijska korelacija nekih nafti depresije Drmno (južni deo panonskog basena, Jugoslavija)
VL  - 66
IS  - 5
SP  - 297
EP  - 308
UR  - https://hdl.handle.net/21.15107/rcub_cherry_456
ER  - 

@article{
author = "Jovančićević, Branimir and Wehner, H. and Scheeder, G and Plecas, D and Ercegovac, M and Vitorović, Dragomir K.",
year = "2001",
abstract = "The results of an investigation of crude oils originating from the Sirakovo and Bradarac-Maljurevac localities (southern part of the Pannonian Basin) are reported in this paper. The aim was to estimate the organic geochemical similarity of the crude oils fi om the DI mno (Kostolac) depression oil fields. The nine selected samples originated from reservoir. rocks of various depths. Reliable source and organic geochemical maturation parameters served as the basis for the correlation studies. The similar origin of the investigated DI mno depression crude oils was corroborated, characterized by a significant participation of terrestrial precursor biomass. They were shown to be of relatively low maturity and to have been formed during the earlier stages of the diagenet- ic-catagenetic sequence of processes leading to the formation of crude oils, most probably in source rocks of Tertiary age, corresponding to vitrinite reflectances between Ro = 0.70 % and Ro = 0.80%. The crude oils from Bradarac-Maljurevac seemed to be somewhat less homogeneous with respect to organic geochemical parameters compared to Sirakovo crude oils., U ovom radu ispitivani su uzorci sirovih nafti depresije Drmno (Kostolac) sa lokaliteta Sirakovo i Bradarac-Maljurevac. Cilj rada bio je da se proceni organsko-geohemijska ujednačenost nafti naftnih polja depresije Drmno. Izabrani su uzorci koji potiču iz rezervoarskih stena sa različitih dubina i u njima su određeni grupni i specifični izvorni i maturacioni organsko-geohemijski parametri. Potvrđeno je da ispitivani uzorci depresije Drmno imaju slično poreklo koje karakteriše veći udeo terestrijalne prekursorske biomase. Ispitivane nafte su nešto nižeg stepena maturisanosti i nastale su u ranijim fazama dijagenetsko-katagenetske sekvencije formiranja nafte kojima odgovaraju vrednosti refleksije vitrinita između Ro = 0,70 % i Ro = 0,80 %. Najverovatnije su nastale u izvornim stenama tercijarne starosti. Nafte sa lokaliteta Bradarac-Maljurevac karakteriše nešto niži nivo organsko-geohemijske homogenosti nego nafte sa lokaliteta Sirakovo.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "An organic geochemical correlation study of some Drmno depresssion crude oils (southern part of the Pannonian Basin, Yugoslavia), Organsko-geohemijska korelacija nekih nafti depresije Drmno (južni deo panonskog basena, Jugoslavija)",
volume = "66",
number = "5",
pages = "297-308",
url = "https://hdl.handle.net/21.15107/rcub_cherry_456"
}

Jovančićević, B., Wehner, H., Scheeder, G., Plecas, D., Ercegovac, M.,& Vitorović, D. K.. (2001). An organic geochemical correlation study of some Drmno depresssion crude oils (southern part of the Pannonian Basin, Yugoslavia). in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 66(5), 297-308.
https://hdl.handle.net/21.15107/rcub_cherry_456

Jovančićević B, Wehner H, Scheeder G, Plecas D, Ercegovac M, Vitorović DK. An organic geochemical correlation study of some Drmno depresssion crude oils (southern part of the Pannonian Basin, Yugoslavia). in Journal of the Serbian Chemical Society. 2001;66(5):297-308.
https://hdl.handle.net/21.15107/rcub_cherry_456 .

Jovančićević, Branimir, Wehner, H., Scheeder, G, Plecas, D, Ercegovac, M, Vitorović, Dragomir K., "An organic geochemical correlation study of some Drmno depresssion crude oils (southern part of the Pannonian Basin, Yugoslavia)" in Journal of the Serbian Chemical Society, 66, no. 5 (2001):297-308,
https://hdl.handle.net/21.15107/rcub_cherry_456 .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Polić, Predrag S.
AU  - Vitorović, Dragomir K.
AU  - Scheeder, G
AU  - Teschner, M
AU  - Wehner, H.
PY  - 2001
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/457
AB  - The fate of oil-type pollutants in ground waters from the Danube River (Yugoslavia) alluvion tin the area of an oil refinery) was being surveyed during a long period of time. Based on detailed analyses of extracts (group composition, GC analysis of n-alkanes and isoprenoid aliphatic alkanes, and GC-MS analysis of polycyclic alkanes) isolated from the ground water samples taken five times from the same borehole during a period of approximately two years (beginning with the winter '97/'98 up to the winter '00), gradual but intensive microbiological degradation of oil-type pollutants has been asserted. However, following an almost complete degradation of,,crude oil" n-alkanes, formation of ,,new" n-alkanes was observed in the examined ground waters. The distribution of newly formed n-alkanes suggested that they most probably represent a product of metabolic processes of micro-organisms which might have participated hi the degradation of hydrocarbons originating from oil-type pollutants.
PB  - Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan
T2  - Fresenius Environmental Bulletin
T1  - Biodegradation of oil-type pollutants in Danube alluvial sediments (Yugoslavia)
VL  - 10
IS  - 2
SP  - 178
EP  - 182
UR  - https://hdl.handle.net/21.15107/rcub_cherry_457
ER  - 

@article{
author = "Jovančićević, Branimir and Polić, Predrag S. and Vitorović, Dragomir K. and Scheeder, G and Teschner, M and Wehner, H.",
year = "2001",
abstract = "The fate of oil-type pollutants in ground waters from the Danube River (Yugoslavia) alluvion tin the area of an oil refinery) was being surveyed during a long period of time. Based on detailed analyses of extracts (group composition, GC analysis of n-alkanes and isoprenoid aliphatic alkanes, and GC-MS analysis of polycyclic alkanes) isolated from the ground water samples taken five times from the same borehole during a period of approximately two years (beginning with the winter '97/'98 up to the winter '00), gradual but intensive microbiological degradation of oil-type pollutants has been asserted. However, following an almost complete degradation of,,crude oil" n-alkanes, formation of ,,new" n-alkanes was observed in the examined ground waters. The distribution of newly formed n-alkanes suggested that they most probably represent a product of metabolic processes of micro-organisms which might have participated hi the degradation of hydrocarbons originating from oil-type pollutants.",
publisher = "Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan",
journal = "Fresenius Environmental Bulletin",
title = "Biodegradation of oil-type pollutants in Danube alluvial sediments (Yugoslavia)",
volume = "10",
number = "2",
pages = "178-182",
url = "https://hdl.handle.net/21.15107/rcub_cherry_457"
}

Jovančićević, B., Polić, P. S., Vitorović, D. K., Scheeder, G., Teschner, M.,& Wehner, H.. (2001). Biodegradation of oil-type pollutants in Danube alluvial sediments (Yugoslavia). in Fresenius Environmental Bulletin
Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan., 10(2), 178-182.
https://hdl.handle.net/21.15107/rcub_cherry_457

Jovančićević B, Polić PS, Vitorović DK, Scheeder G, Teschner M, Wehner H. Biodegradation of oil-type pollutants in Danube alluvial sediments (Yugoslavia). in Fresenius Environmental Bulletin. 2001;10(2):178-182.
https://hdl.handle.net/21.15107/rcub_cherry_457 .

Jovančićević, Branimir, Polić, Predrag S., Vitorović, Dragomir K., Scheeder, G, Teschner, M, Wehner, H., "Biodegradation of oil-type pollutants in Danube alluvial sediments (Yugoslavia)" in Fresenius Environmental Bulletin, 10, no. 2 (2001):178-182,
https://hdl.handle.net/21.15107/rcub_cherry_457 .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Polić, Predrag S.
AU  - Mikasinovic, B
AU  - Scheeder, G
AU  - Teschner, M
AU  - Wehner, H.
PY  - 2001
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/474
AB  - In this paper, ground waters from the alluvial Formation of the Danube River were investigated (samples Were taken from boreholes within the Pancevo Oil Refinery, Northern Serbia). The organic substances were extracted, their bulk composition determined, and n-alkanes were analysed in the alkane fractions, as well as the isoprenoid aliphatic alkanes, pristane and phytane (by GC analysis), and the polycyclic alkanes of the sterane and triterpane types (GC-MS analysis). The obtained results have shown that, in case that n-alkanes, pristane and phytane cannot be used (e.g. if their biodegradation has occurred in ground waters), steranes and triterpanes may serve as most useful tools in identifying oil-type pollution.
PB  - Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan
T2  - Fresenius Environmental Bulletin
T1  - Steranes and triterpanes as a tool for identification of petroleum-type pollutants in alluvial ground waters (Danube alluvial sediments, Yugoslavia)
VL  - 10
IS  - 6
SP  - 527
EP  - 532
UR  - https://hdl.handle.net/21.15107/rcub_cherry_474
ER  - 

@article{
author = "Jovančićević, Branimir and Polić, Predrag S. and Mikasinovic, B and Scheeder, G and Teschner, M and Wehner, H.",
year = "2001",
abstract = "In this paper, ground waters from the alluvial Formation of the Danube River were investigated (samples Were taken from boreholes within the Pancevo Oil Refinery, Northern Serbia). The organic substances were extracted, their bulk composition determined, and n-alkanes were analysed in the alkane fractions, as well as the isoprenoid aliphatic alkanes, pristane and phytane (by GC analysis), and the polycyclic alkanes of the sterane and triterpane types (GC-MS analysis). The obtained results have shown that, in case that n-alkanes, pristane and phytane cannot be used (e.g. if their biodegradation has occurred in ground waters), steranes and triterpanes may serve as most useful tools in identifying oil-type pollution.",
publisher = "Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan",
journal = "Fresenius Environmental Bulletin",
title = "Steranes and triterpanes as a tool for identification of petroleum-type pollutants in alluvial ground waters (Danube alluvial sediments, Yugoslavia)",
volume = "10",
number = "6",
pages = "527-532",
url = "https://hdl.handle.net/21.15107/rcub_cherry_474"
}

Jovančićević, B., Polić, P. S., Mikasinovic, B., Scheeder, G., Teschner, M.,& Wehner, H.. (2001). Steranes and triterpanes as a tool for identification of petroleum-type pollutants in alluvial ground waters (Danube alluvial sediments, Yugoslavia). in Fresenius Environmental Bulletin
Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan., 10(6), 527-532.
https://hdl.handle.net/21.15107/rcub_cherry_474

Jovančićević B, Polić PS, Mikasinovic B, Scheeder G, Teschner M, Wehner H. Steranes and triterpanes as a tool for identification of petroleum-type pollutants in alluvial ground waters (Danube alluvial sediments, Yugoslavia). in Fresenius Environmental Bulletin. 2001;10(6):527-532.
https://hdl.handle.net/21.15107/rcub_cherry_474 .

Jovančićević, Branimir, Polić, Predrag S., Mikasinovic, B, Scheeder, G, Teschner, M, Wehner, H., "Steranes and triterpanes as a tool for identification of petroleum-type pollutants in alluvial ground waters (Danube alluvial sediments, Yugoslavia)" in Fresenius Environmental Bulletin, 10, no. 6 (2001):527-532,
https://hdl.handle.net/21.15107/rcub_cherry_474 .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Tasic, L
AU  - Wehner, H.
AU  - Marković, Dragan A.
AU  - Polić, Predrag S.
PY  - 1998
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/375
AB  - An attempt was made to apply n-alkane distribution parameters in the identification of various organic matter pollution. Comparing the results of GC-analyses of n-alkanes in sewage-polluted river sediments with unpolluted sediments, it was shown that n-alkane distribution and abundance parameters offer a sound basis not only for the identification of oil-derived, but also for non-oil derived organic matter pollution in recent sediments.
PB  - Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan
T2  - Fresenius Environmental Bulletin
T1  - n-alkane distribution as a tool in the identification of organic type pollution in river sediments
VL  - 7
IS  - 5-6
SP  - 320
EP  - 326
UR  - https://hdl.handle.net/21.15107/rcub_cherry_375
ER  - 

@article{
author = "Jovančićević, Branimir and Tasic, L and Wehner, H. and Marković, Dragan A. and Polić, Predrag S.",
year = "1998",
abstract = "An attempt was made to apply n-alkane distribution parameters in the identification of various organic matter pollution. Comparing the results of GC-analyses of n-alkanes in sewage-polluted river sediments with unpolluted sediments, it was shown that n-alkane distribution and abundance parameters offer a sound basis not only for the identification of oil-derived, but also for non-oil derived organic matter pollution in recent sediments.",
publisher = "Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan",
journal = "Fresenius Environmental Bulletin",
title = "n-alkane distribution as a tool in the identification of organic type pollution in river sediments",
volume = "7",
number = "5-6",
pages = "320-326",
url = "https://hdl.handle.net/21.15107/rcub_cherry_375"
}

Jovančićević, B., Tasic, L., Wehner, H., Marković, D. A.,& Polić, P. S.. (1998). n-alkane distribution as a tool in the identification of organic type pollution in river sediments. in Fresenius Environmental Bulletin
Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan., 7(5-6), 320-326.
https://hdl.handle.net/21.15107/rcub_cherry_375

Jovančićević B, Tasic L, Wehner H, Marković DA, Polić PS. n-alkane distribution as a tool in the identification of organic type pollution in river sediments. in Fresenius Environmental Bulletin. 1998;7(5-6):320-326.
https://hdl.handle.net/21.15107/rcub_cherry_375 .

Jovančićević, Branimir, Tasic, L, Wehner, H., Marković, Dragan A., Polić, Predrag S., "n-alkane distribution as a tool in the identification of organic type pollution in river sediments" in Fresenius Environmental Bulletin, 7, no. 5-6 (1998):320-326,
https://hdl.handle.net/21.15107/rcub_cherry_375 .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Tasic, L
AU  - Wehner, H.
AU  - Faber, E
AU  - Susic, N
AU  - Polić, Predrag S.
PY  - 1997
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2595
AB  - An attempt was made to determine the origin of soluble organic matter and to identify oil-type pollution, on the basis of n-alkane abundance and distribution patterns in the alkane fractions (determined by gas chromatography, GC), as well as on the basis of the carbon isotope ratio (delta(13)C(PDB)) of dominant n-alkanes (determined by gas chromatography - mass spectrometry, GC-MS). 17 samples of alluvial sediments from three, ecochemically different areas were investigated.
PB  - Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan
T2  - Fresenius Environmental Bulletin
T1  - Identification of oil-type pollution in recent sediments
VL  - 6
IS  - 11-12
SP  - 667
EP  - 673
UR  - https://hdl.handle.net/21.15107/rcub_cherry_2595
ER  - 

@article{
author = "Jovančićević, Branimir and Tasic, L and Wehner, H. and Faber, E and Susic, N and Polić, Predrag S.",
year = "1997",
abstract = "An attempt was made to determine the origin of soluble organic matter and to identify oil-type pollution, on the basis of n-alkane abundance and distribution patterns in the alkane fractions (determined by gas chromatography, GC), as well as on the basis of the carbon isotope ratio (delta(13)C(PDB)) of dominant n-alkanes (determined by gas chromatography - mass spectrometry, GC-MS). 17 samples of alluvial sediments from three, ecochemically different areas were investigated.",
publisher = "Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan",
journal = "Fresenius Environmental Bulletin",
title = "Identification of oil-type pollution in recent sediments",
volume = "6",
number = "11-12",
pages = "667-673",
url = "https://hdl.handle.net/21.15107/rcub_cherry_2595"
}

Jovančićević, B., Tasic, L., Wehner, H., Faber, E., Susic, N.,& Polić, P. S.. (1997). Identification of oil-type pollution in recent sediments. in Fresenius Environmental Bulletin
Inst Lebensmitteltechnologie Analytische Chemie, Freising-Weihenstephan., 6(11-12), 667-673.
https://hdl.handle.net/21.15107/rcub_cherry_2595

Jovančićević B, Tasic L, Wehner H, Faber E, Susic N, Polić PS. Identification of oil-type pollution in recent sediments. in Fresenius Environmental Bulletin. 1997;6(11-12):667-673.
https://hdl.handle.net/21.15107/rcub_cherry_2595 .

Jovančićević, Branimir, Tasic, L, Wehner, H., Faber, E, Susic, N, Polić, Predrag S., "Identification of oil-type pollution in recent sediments" in Fresenius Environmental Bulletin, 6, no. 11-12 (1997):667-673,
https://hdl.handle.net/21.15107/rcub_cherry_2595 .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Vučelić, D.
AU  - Šaban, M.
AU  - Wehner, H.
AU  - Vitorović, Dragomir K.
PY  - 1993
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/31
AB  - Evidence for catalytic effects of indigenous minerals in the pyrolysis of Aleksinac oil shale kerogen was found by investigating the liquid products obtained in the Micro Activity Test (MAT) pyrolysis of raw shale and its demineralized substrates. By comparing the corresponding fragmentograms of a demineralized sample with those of a substrate containing only silicate minerals, differences in the side-chain isomerisation of the steranes and triterpanes, and in the side-chain cleavage of the triaromatic steroids were observed. These findings corroborated the previous conclusion, based on MAT parameters and TG weight losses, that the catalytic effect of the indigenous mineral components during the pyrolysis of Aleksinac oil shale kerogen is very low. © 1993.
T2  - Organic Geochemistry
T1  - Investigation of the catalytic effects of indigenous minerals in the pyrolysis of Aleksinac oil shale substrates: Steranes, triterpanes and triaromatic steroids in the pyrolysates
VL  - 20
IS  - 1
SP  - 69
EP  - 76
DO  - 10.1016/0146-6380(93)90082-M
ER  - 

@article{
author = "Jovančićević, Branimir and Vučelić, D. and Šaban, M. and Wehner, H. and Vitorović, Dragomir K.",
year = "1993",
abstract = "Evidence for catalytic effects of indigenous minerals in the pyrolysis of Aleksinac oil shale kerogen was found by investigating the liquid products obtained in the Micro Activity Test (MAT) pyrolysis of raw shale and its demineralized substrates. By comparing the corresponding fragmentograms of a demineralized sample with those of a substrate containing only silicate minerals, differences in the side-chain isomerisation of the steranes and triterpanes, and in the side-chain cleavage of the triaromatic steroids were observed. These findings corroborated the previous conclusion, based on MAT parameters and TG weight losses, that the catalytic effect of the indigenous mineral components during the pyrolysis of Aleksinac oil shale kerogen is very low. © 1993.",
journal = "Organic Geochemistry",
title = "Investigation of the catalytic effects of indigenous minerals in the pyrolysis of Aleksinac oil shale substrates: Steranes, triterpanes and triaromatic steroids in the pyrolysates",
volume = "20",
number = "1",
pages = "69-76",
doi = "10.1016/0146-6380(93)90082-M"
}

Jovančićević, B., Vučelić, D., Šaban, M., Wehner, H.,& Vitorović, D. K.. (1993). Investigation of the catalytic effects of indigenous minerals in the pyrolysis of Aleksinac oil shale substrates: Steranes, triterpanes and triaromatic steroids in the pyrolysates. in Organic Geochemistry, 20(1), 69-76.
https://doi.org/10.1016/0146-6380(93)90082-M

Jovančićević B, Vučelić D, Šaban M, Wehner H, Vitorović DK. Investigation of the catalytic effects of indigenous minerals in the pyrolysis of Aleksinac oil shale substrates: Steranes, triterpanes and triaromatic steroids in the pyrolysates. in Organic Geochemistry. 1993;20(1):69-76.
doi:10.1016/0146-6380(93)90082-M .

Jovančićević, Branimir, Vučelić, D., Šaban, M., Wehner, H., Vitorović, Dragomir K., "Investigation of the catalytic effects of indigenous minerals in the pyrolysis of Aleksinac oil shale substrates: Steranes, triterpanes and triaromatic steroids in the pyrolysates" in Organic Geochemistry, 20, no. 1 (1993):69-76,
https://doi.org/10.1016/0146-6380(93)90082-M . .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Vitorović, Dragomir K.
AU  - Šaban, M.
AU  - Wehner, H.
PY  - 1992
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/27
AB  - In order to evaluate the adsorption and catalytic effects of indigenous carbonates and silicates on the organic matter of Aleksinac oil shale, the free and the bound bitumens were isolated and analyzed by organic geochemical methods. The differences in the gross compositions indicated an adsorption effect of both the carbonates and silicates in the examined oil shale. The maturation parameters, based on n-alkanes and isoprenoid alkanes pristane and phytane, indicated that bitumen 3 was of the highest, and bitumen 1 of the lowest, apparent maturity. The silicates were shown to have had a thermocatalytic effect on the organic matter of this sediment. Clay minerals had a catalytic effect primarily on sterane aromatization, rearrangement of steranes into diasteranes and their (20R) → (20S) isomerization. All evidence obtained by analysis of steranes and aromatic steroids suggested that the differences in bitumen compositions should be explained by the effect of clay minerals rather than by variations in the origin of the precursor biomass. © 1992.
T2  - Organic Geochemistry
T1  - Evaluation of the effects of native minerals on the organic matter of Aleksinac oil shale based on the composition of free and bound bitumens
VL  - 18
IS  - 4
SP  - 511
EP  - 519
DO  - 10.1016/0146-6380(92)90114-D
ER  - 

@article{
author = "Jovančićević, Branimir and Vitorović, Dragomir K. and Šaban, M. and Wehner, H.",
year = "1992",
abstract = "In order to evaluate the adsorption and catalytic effects of indigenous carbonates and silicates on the organic matter of Aleksinac oil shale, the free and the bound bitumens were isolated and analyzed by organic geochemical methods. The differences in the gross compositions indicated an adsorption effect of both the carbonates and silicates in the examined oil shale. The maturation parameters, based on n-alkanes and isoprenoid alkanes pristane and phytane, indicated that bitumen 3 was of the highest, and bitumen 1 of the lowest, apparent maturity. The silicates were shown to have had a thermocatalytic effect on the organic matter of this sediment. Clay minerals had a catalytic effect primarily on sterane aromatization, rearrangement of steranes into diasteranes and their (20R) → (20S) isomerization. All evidence obtained by analysis of steranes and aromatic steroids suggested that the differences in bitumen compositions should be explained by the effect of clay minerals rather than by variations in the origin of the precursor biomass. © 1992.",
journal = "Organic Geochemistry",
title = "Evaluation of the effects of native minerals on the organic matter of Aleksinac oil shale based on the composition of free and bound bitumens",
volume = "18",
number = "4",
pages = "511-519",
doi = "10.1016/0146-6380(92)90114-D"
}

Jovančićević, B., Vitorović, D. K., Šaban, M.,& Wehner, H.. (1992). Evaluation of the effects of native minerals on the organic matter of Aleksinac oil shale based on the composition of free and bound bitumens. in Organic Geochemistry, 18(4), 511-519.
https://doi.org/10.1016/0146-6380(92)90114-D

Jovančićević B, Vitorović DK, Šaban M, Wehner H. Evaluation of the effects of native minerals on the organic matter of Aleksinac oil shale based on the composition of free and bound bitumens. in Organic Geochemistry. 1992;18(4):511-519.
doi:10.1016/0146-6380(92)90114-D .

Jovančićević, Branimir, Vitorović, Dragomir K., Šaban, M., Wehner, H., "Evaluation of the effects of native minerals on the organic matter of Aleksinac oil shale based on the composition of free and bound bitumens" in Organic Geochemistry, 18, no. 4 (1992):511-519,
https://doi.org/10.1016/0146-6380(92)90114-D . .