TY  - JOUR
AU  - Topalović, Ana
AU  - Pfendt, Lidija B.
AU  - Perovic, Natalija
AU  - Đorđević, Dragana S.
AU  - Trifunović, Snežana S.
AU  - Pfendt, Petar A.
PY  - 2006
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/819
AB  - Phosphorus fractions from three highly calcareous soils (average, 24.9 +/- 4.8 %CO32-) from sampling sites with a Mediterranean climate were isolated by sequential extraction. In order to provide a more reliable basis for the definition of the obtained P-fractions, principal component analysis was applied and from the chemical characteristics of the 14 investigated soils, those characteristics which define at he content and association features of the P-fractions were assessed. The soils are characterized by a relatively high pH (8.0-8.2) and by significantly differing contents of organic mater, acid-soluble Mg and total P. These differences affected the various association features of the P-fraction with the soil constituents. The NH4F-P fraction (isolated with 0.5 M NH4F, pH 8.2) is defined by the contents of the main metals of the oxide-hydroxide-clay associations (Al, Fe, Mn) or by the the redox potential (Eh) of Mn. The accumulation of NaOH-phosphorus (extractable with 0.1 M NaOH) depended on the constituents of the oxide hydroxide-clay association, the humic substances and Eh-related factors. In those soils in which NaOH-P is defined by the oxide-hydroxide-clay association, the participation of Fe as a bridge-forming metal is proposed. The main part of total P, i.e., Delta P = TP - (NH4F-P + NaOH-P) is defined by the status of Mn- and Fe-humic complexes or by the concentration of hydroxyl-ions.
AB  - Iz tri visoko-krečnjačka zemljišta (prosečni sadržaj CO 3 2- 24.9 ± 4.8%, pH 8.0 - 8.2), sa lokacija sa sredozemnom klimom, izolovane su frakcije fosfora sekvencijalnom ekstrakcijom. U cilju obezbeđivanja pouzdanije osnove za definisanje dobijenih frakcijafosfora (P-frakcija), primenjena je analiza principalne komponente (PC-analiza). Među 14 hemijskih karakteristika zemljišta, izdvojene su one koje definišu sadržaj pojedinih P-frakcija i prirodu njihove asocijacije sa sastojcima zemljišta. Frakcija NH 4-P (izolovana sa 0,5M NH 4F, pH = 8,2) definisana je sadržajem glavnih metala oksidne-hidroksidne-glinene asocijacije (Al, Fe, Mn) ili Eh-statusom izraženim sadržajem Mn. Akumulacija NaOH-P (ekstrahovanog sa 0,1 M NaOH) zavisila je od sastojaka oksidne-hidroksidne-glinene asocijacije, od huminskih supstanci i od faktora koji stoje u vezi sa Eh. U onim zemljištima u kojima je NaOH-P definisana sastojcima oksidne-hidroksidne-glinene asocijacije, pretpostavljeno je vezivanje fosfora preko Fe-mostova. Glavna količina fosfora ∆P = TP - (NH 4F-P + NaOH-P), u pojedinim zemljištima definisana je ili statusom Mn- i Fe-huminskih kompleksa, ili pH-vrednošću.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - The chemical characteristics of soil which determine phosphorus partitioning in highly calcareous soils
T1  - Hemijske karakteristike visoko-krečnjačkih zemljišta koje određuju raspodelu fosfora
VL  - 71
IS  - 11
SP  - 1219
EP  - 1236
DO  - 10.2298/JSC0611219T
ER  - 

@article{
author = "Topalović, Ana and Pfendt, Lidija B. and Perovic, Natalija and Đorđević, Dragana S. and Trifunović, Snežana S. and Pfendt, Petar A.",
year = "2006",
abstract = "Phosphorus fractions from three highly calcareous soils (average, 24.9 +/- 4.8 %CO32-) from sampling sites with a Mediterranean climate were isolated by sequential extraction. In order to provide a more reliable basis for the definition of the obtained P-fractions, principal component analysis was applied and from the chemical characteristics of the 14 investigated soils, those characteristics which define at he content and association features of the P-fractions were assessed. The soils are characterized by a relatively high pH (8.0-8.2) and by significantly differing contents of organic mater, acid-soluble Mg and total P. These differences affected the various association features of the P-fraction with the soil constituents. The NH4F-P fraction (isolated with 0.5 M NH4F, pH 8.2) is defined by the contents of the main metals of the oxide-hydroxide-clay associations (Al, Fe, Mn) or by the the redox potential (Eh) of Mn. The accumulation of NaOH-phosphorus (extractable with 0.1 M NaOH) depended on the constituents of the oxide hydroxide-clay association, the humic substances and Eh-related factors. In those soils in which NaOH-P is defined by the oxide-hydroxide-clay association, the participation of Fe as a bridge-forming metal is proposed. The main part of total P, i.e., Delta P = TP - (NH4F-P + NaOH-P) is defined by the status of Mn- and Fe-humic complexes or by the concentration of hydroxyl-ions., Iz tri visoko-krečnjačka zemljišta (prosečni sadržaj CO 3 2- 24.9 ± 4.8%, pH 8.0 - 8.2), sa lokacija sa sredozemnom klimom, izolovane su frakcije fosfora sekvencijalnom ekstrakcijom. U cilju obezbeđivanja pouzdanije osnove za definisanje dobijenih frakcijafosfora (P-frakcija), primenjena je analiza principalne komponente (PC-analiza). Među 14 hemijskih karakteristika zemljišta, izdvojene su one koje definišu sadržaj pojedinih P-frakcija i prirodu njihove asocijacije sa sastojcima zemljišta. Frakcija NH 4-P (izolovana sa 0,5M NH 4F, pH = 8,2) definisana je sadržajem glavnih metala oksidne-hidroksidne-glinene asocijacije (Al, Fe, Mn) ili Eh-statusom izraženim sadržajem Mn. Akumulacija NaOH-P (ekstrahovanog sa 0,1 M NaOH) zavisila je od sastojaka oksidne-hidroksidne-glinene asocijacije, od huminskih supstanci i od faktora koji stoje u vezi sa Eh. U onim zemljištima u kojima je NaOH-P definisana sastojcima oksidne-hidroksidne-glinene asocijacije, pretpostavljeno je vezivanje fosfora preko Fe-mostova. Glavna količina fosfora ∆P = TP - (NH 4F-P + NaOH-P), u pojedinim zemljištima definisana je ili statusom Mn- i Fe-huminskih kompleksa, ili pH-vrednošću.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "The chemical characteristics of soil which determine phosphorus partitioning in highly calcareous soils, Hemijske karakteristike visoko-krečnjačkih zemljišta koje određuju raspodelu fosfora",
volume = "71",
number = "11",
pages = "1219-1236",
doi = "10.2298/JSC0611219T"
}

Topalović, A., Pfendt, L. B., Perovic, N., Đorđević, D. S., Trifunović, S. S.,& Pfendt, P. A.. (2006). The chemical characteristics of soil which determine phosphorus partitioning in highly calcareous soils. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 71(11), 1219-1236.
https://doi.org/10.2298/JSC0611219T

Topalović A, Pfendt LB, Perovic N, Đorđević DS, Trifunović SS, Pfendt PA. The chemical characteristics of soil which determine phosphorus partitioning in highly calcareous soils. in Journal of the Serbian Chemical Society. 2006;71(11):1219-1236.
doi:10.2298/JSC0611219T .

Topalović, Ana, Pfendt, Lidija B., Perovic, Natalija, Đorđević, Dragana S., Trifunović, Snežana S., Pfendt, Petar A., "The chemical characteristics of soil which determine phosphorus partitioning in highly calcareous soils" in Journal of the Serbian Chemical Society, 71, no. 11 (2006):1219-1236,
https://doi.org/10.2298/JSC0611219T . .

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 .

TY  - JOUR
AU  - Mrkic, S
AU  - Pfendt, Petar A.
AU  - Jovančićević, Branimir
AU  - Matic, I
AU  - Vujasinovic, S
AU  - Babic, D
AU  - Vrvić, Miroslav M.
AU  - Đorđević, Dragana S.
AU  - Gojgić-Cvijović, Gordana D.
AU  - Nikolic, P
AU  - Devic, G
AU  - Matic, V
AU  - Relić, Dubravka
AU  - Trifunović, Snežana S.
PY  - 2005
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/757
AB  - The association patterns of xylene and of total phosphorus with sediment constituents in an alluvial aquifer consisting of clays and sands which had been contaminated by a spill of technical grade xylene were investigated with the aim of assessing the dependence of in situ xylene degradation on the P-availability. The investigated alluvial sediments of the Makis Plain (Sava river alluvion Quaternary age, Serbia and Montenegro) are relatively poor in P. The most reliable associations were proposed by analyzing the quality of the correlations of xylene- and of P-contents with 32 sediment characteristics. The association patterns depend on the mineralogical and granulometrical composition of sediments, the stuctural characteristics of the organic matter (N/C-ratio) and the redox-conditions. Differing association patterns in the clays and the sand had been developed, and these characteristics influence the intrinsic xylene degradation. The main proof for the occurence of xylene degradation is the percentul share of bacteria which oxidize xylene as a single carbon-source.
AB  - Ispitivani su glineni i peskoviti sedimenti Makiškog polja, zagađeni ksilenom (26-17800μg/kg), s ciljem da se utvrdi uticaj asocijacija ksilen-supstrat odnosno fosfor-supstrat na in situ degradaciju ksilena. Sedimenti Makiškog polja (aluvijalni sedimenti mlađeg Kvartara), imaju relativno nizak sadržaj fosfora. Analiziranjem korelacija ksilena i fosfora sa 32 sastojka sedimenata utvrđeno je da asocijacije ksilena i fosfora zavise od mineraloškog i granulometrijskog sastava sedimenta, strukturnih karakteristika organske supstance i redoks uslova sredine. Fosfor i ksilen u peskovitim i glinenim sedimentima grade različite tipove asocijacija, što se odražava i na degradaciju ksilena. Znatan udeo bakterija koje oksiduju ksilen kao jedini izvor ugljenika predstavlja pouzdan pokazatelj da se u sedimentima odvija degradacija ksilena.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - The influence of the association patterns of phosphorus-substrates and xylene-substrates on the degradation of xylenes in an alluvial aquifer
T1  - Asocijacije ksilen-supstrat odnosno fosfor-supstrat u aluvijalnom akviferu i njihov uticaj na in situ degradaciju ksilena
VL  - 70
IS  - 12
SP  - 1515
EP  - 1531
DO  - 10.2298/JSC0512515M
ER  - 

@article{
author = "Mrkic, S and Pfendt, Petar A. and Jovančićević, Branimir and Matic, I and Vujasinovic, S and Babic, D and Vrvić, Miroslav M. and Đorđević, Dragana S. and Gojgić-Cvijović, Gordana D. and Nikolic, P and Devic, G and Matic, V and Relić, Dubravka and Trifunović, Snežana S.",
year = "2005",
abstract = "The association patterns of xylene and of total phosphorus with sediment constituents in an alluvial aquifer consisting of clays and sands which had been contaminated by a spill of technical grade xylene were investigated with the aim of assessing the dependence of in situ xylene degradation on the P-availability. The investigated alluvial sediments of the Makis Plain (Sava river alluvion Quaternary age, Serbia and Montenegro) are relatively poor in P. The most reliable associations were proposed by analyzing the quality of the correlations of xylene- and of P-contents with 32 sediment characteristics. The association patterns depend on the mineralogical and granulometrical composition of sediments, the stuctural characteristics of the organic matter (N/C-ratio) and the redox-conditions. Differing association patterns in the clays and the sand had been developed, and these characteristics influence the intrinsic xylene degradation. The main proof for the occurence of xylene degradation is the percentul share of bacteria which oxidize xylene as a single carbon-source., Ispitivani su glineni i peskoviti sedimenti Makiškog polja, zagađeni ksilenom (26-17800μg/kg), s ciljem da se utvrdi uticaj asocijacija ksilen-supstrat odnosno fosfor-supstrat na in situ degradaciju ksilena. Sedimenti Makiškog polja (aluvijalni sedimenti mlađeg Kvartara), imaju relativno nizak sadržaj fosfora. Analiziranjem korelacija ksilena i fosfora sa 32 sastojka sedimenata utvrđeno je da asocijacije ksilena i fosfora zavise od mineraloškog i granulometrijskog sastava sedimenta, strukturnih karakteristika organske supstance i redoks uslova sredine. Fosfor i ksilen u peskovitim i glinenim sedimentima grade različite tipove asocijacija, što se odražava i na degradaciju ksilena. Znatan udeo bakterija koje oksiduju ksilen kao jedini izvor ugljenika predstavlja pouzdan pokazatelj da se u sedimentima odvija degradacija ksilena.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "The influence of the association patterns of phosphorus-substrates and xylene-substrates on the degradation of xylenes in an alluvial aquifer, Asocijacije ksilen-supstrat odnosno fosfor-supstrat u aluvijalnom akviferu i njihov uticaj na in situ degradaciju ksilena",
volume = "70",
number = "12",
pages = "1515-1531",
doi = "10.2298/JSC0512515M"
}

Mrkic, S., Pfendt, P. A., Jovančićević, B., Matic, I., Vujasinovic, S., Babic, D., Vrvić, M. M., Đorđević, D. S., Gojgić-Cvijović, G. D., Nikolic, P., Devic, G., Matic, V., Relić, D.,& Trifunović, S. S.. (2005). The influence of the association patterns of phosphorus-substrates and xylene-substrates on the degradation of xylenes in an alluvial aquifer. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 70(12), 1515-1531.
https://doi.org/10.2298/JSC0512515M

Mrkic S, Pfendt PA, Jovančićević B, Matic I, Vujasinovic S, Babic D, Vrvić MM, Đorđević DS, Gojgić-Cvijović GD, Nikolic P, Devic G, Matic V, Relić D, Trifunović SS. The influence of the association patterns of phosphorus-substrates and xylene-substrates on the degradation of xylenes in an alluvial aquifer. in Journal of the Serbian Chemical Society. 2005;70(12):1515-1531.
doi:10.2298/JSC0512515M .

Mrkic, S, Pfendt, Petar A., Jovančićević, Branimir, Matic, I, Vujasinovic, S, Babic, D, Vrvić, Miroslav M., Đorđević, Dragana S., Gojgić-Cvijović, Gordana D., Nikolic, P, Devic, G, Matic, V, Relić, Dubravka, Trifunović, Snežana S., "The influence of the association patterns of phosphorus-substrates and xylene-substrates on the degradation of xylenes in an alluvial aquifer" in Journal of the Serbian Chemical Society, 70, no. 12 (2005):1515-1531,
https://doi.org/10.2298/JSC0512515M . .

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  - Stojanović, Ksenija A.
AU  - Jovančićević, Branimir
AU  - Pevneva, GS
AU  - Golovko, JA
AU  - Golovko, AK
AU  - Pfendt, Petar A.
PY  - 2001
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/455
AB  - A correlation analysis of maturation parameters was carried out on 14 crude oil samples from nine oil fields on Sakhalin Island (Russia). The oils were taken from reservoir rocks of Miocene age at depths ranging from 73 to 2841 m. On the basis of GC analysis of the alkane fraction (n-alkanes and the isoprenoid alkanes pristane and phytane) as well as on the basis of the abundance of demethylated hopanes (GC-MS analysis, m/z 177), it is assumed that the oils are either biodegraded or are a mixture of biodegraded and nonbiodegraded oils. Therefore, their maturation is assessed on the basis of the distribution and abundance of tricyclic aromatic hydrocarbons that are more resistant to biodegradation than alkane-type biological markers. The oils may be classified into three groups on the basis of the well-established maturation parameter MPI 3: highly mature (group I), moderately mature (group II) and immature (group III). The correlation analysis shows that the percentage of phenanthrene [P] in the tricyclic aromatic fraction of the oils of the Sakhalin oil fields can be used as a maturation parameter. The highly mature oils (group I) were found to have a [P] value of more than 14%; the moderately mature oils (group II) have values of 7-14%, and the immature oils (group III) a value of less than 7%. The very good correlation between MPI 3 and [P] also indicates that parallel to methylphenanthrene isomerization, dealkylation also occurs in the reservoir rocks. By correlation analysis it is shown that these reactions are, to a great extent, determined by the depth of the reservoir rocks. (C) 2001 Elsevier Science Ltd. All rights reserved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Organic Geochemistry
T1  - Maturity assessment of oils from the Sakhalin oil fields in Russia: phenanthrene content as a tool
VL  - 32
IS  - 5
SP  - 721
EP  - 731
DO  - 10.1016/S0146-6380(01)00004-3
ER  - 

@article{
author = "Stojanović, Ksenija A. and Jovančićević, Branimir and Pevneva, GS and Golovko, JA and Golovko, AK and Pfendt, Petar A.",
year = "2001",
abstract = "A correlation analysis of maturation parameters was carried out on 14 crude oil samples from nine oil fields on Sakhalin Island (Russia). The oils were taken from reservoir rocks of Miocene age at depths ranging from 73 to 2841 m. On the basis of GC analysis of the alkane fraction (n-alkanes and the isoprenoid alkanes pristane and phytane) as well as on the basis of the abundance of demethylated hopanes (GC-MS analysis, m/z 177), it is assumed that the oils are either biodegraded or are a mixture of biodegraded and nonbiodegraded oils. Therefore, their maturation is assessed on the basis of the distribution and abundance of tricyclic aromatic hydrocarbons that are more resistant to biodegradation than alkane-type biological markers. The oils may be classified into three groups on the basis of the well-established maturation parameter MPI 3: highly mature (group I), moderately mature (group II) and immature (group III). The correlation analysis shows that the percentage of phenanthrene [P] in the tricyclic aromatic fraction of the oils of the Sakhalin oil fields can be used as a maturation parameter. The highly mature oils (group I) were found to have a [P] value of more than 14%; the moderately mature oils (group II) have values of 7-14%, and the immature oils (group III) a value of less than 7%. The very good correlation between MPI 3 and [P] also indicates that parallel to methylphenanthrene isomerization, dealkylation also occurs in the reservoir rocks. By correlation analysis it is shown that these reactions are, to a great extent, determined by the depth of the reservoir rocks. (C) 2001 Elsevier Science Ltd. All rights reserved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Organic Geochemistry",
title = "Maturity assessment of oils from the Sakhalin oil fields in Russia: phenanthrene content as a tool",
volume = "32",
number = "5",
pages = "721-731",
doi = "10.1016/S0146-6380(01)00004-3"
}

Stojanović, K. A., Jovančićević, B., Pevneva, G., Golovko, J., Golovko, A.,& Pfendt, P. A.. (2001). Maturity assessment of oils from the Sakhalin oil fields in Russia: phenanthrene content as a tool. in Organic Geochemistry
Pergamon-Elsevier Science Ltd, Oxford., 32(5), 721-731.
https://doi.org/10.1016/S0146-6380(01)00004-3

Stojanović KA, Jovančićević B, Pevneva G, Golovko J, Golovko A, Pfendt PA. Maturity assessment of oils from the Sakhalin oil fields in Russia: phenanthrene content as a tool. in Organic Geochemistry. 2001;32(5):721-731.
doi:10.1016/S0146-6380(01)00004-3 .

Stojanović, Ksenija A., Jovančićević, Branimir, Pevneva, GS, Golovko, JA, Golovko, AK, Pfendt, Petar A., "Maturity assessment of oils from the Sakhalin oil fields in Russia: phenanthrene content as a tool" in Organic Geochemistry, 32, no. 5 (2001):721-731,
https://doi.org/10.1016/S0146-6380(01)00004-3 . .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Tasić, L.Z.
AU  - Vujasinović, S.O.
AU  - Matić, I.D.
AU  - Malović, D.D.
AU  - Pfendt, Petar A.
PY  - 1996
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/67
AB  - In order to gain insight into oil transformations which occur during migration, and to contribute to the elucidation of migration mechanisms in water-wet environments, the content and composition of heavy fuel oil from an accidental oil spill near the railway station of Ušće (Kraljevo) was determined in crushed rock samples from various depths and distances from the oil spill. The group composition (saturated hydrocarbons, aromates, NSO-compounds and residue) of heavy fuel oil extracts was determined. n-Alkanes and isoprenoid alkanes, pristane (Pr) and phytane (Phyt), in the saturated hydrocarbon fraction were identified by gas chromatography (GC). X-ray diffraction analysis (XRD) was applied on the inorganic residue in order to determine its mineralogical composition. The observed differences in the group composition (increase in NSO-compounds content with depth and distance), and in the distribution of n-alkanes and isoprenoid alkanes (the shift of the n-alkane-maximum and the shift of Pr/n-C17-and Phyt/n-C18-ratios towards higher values with depth and distance) lead to the conclusion that heavy fuel oil migration through the crushed rock environment occurred in the presence of water by the colloidal micelle mechanism.
T2  - Journal of the Serbian Chemical Society
T1  - A contribution to the elucidation of oil migration mechanisms through water-wet sediments: Crushed rock environment as example
VL  - 61
IS  - 11
SP  - 1025
EP  - 1031
UR  - https://hdl.handle.net/21.15107/rcub_cherry_67
ER  - 

@article{
author = "Jovančićević, Branimir and Tasić, L.Z. and Vujasinović, S.O. and Matić, I.D. and Malović, D.D. and Pfendt, Petar A.",
year = "1996",
abstract = "In order to gain insight into oil transformations which occur during migration, and to contribute to the elucidation of migration mechanisms in water-wet environments, the content and composition of heavy fuel oil from an accidental oil spill near the railway station of Ušće (Kraljevo) was determined in crushed rock samples from various depths and distances from the oil spill. The group composition (saturated hydrocarbons, aromates, NSO-compounds and residue) of heavy fuel oil extracts was determined. n-Alkanes and isoprenoid alkanes, pristane (Pr) and phytane (Phyt), in the saturated hydrocarbon fraction were identified by gas chromatography (GC). X-ray diffraction analysis (XRD) was applied on the inorganic residue in order to determine its mineralogical composition. The observed differences in the group composition (increase in NSO-compounds content with depth and distance), and in the distribution of n-alkanes and isoprenoid alkanes (the shift of the n-alkane-maximum and the shift of Pr/n-C17-and Phyt/n-C18-ratios towards higher values with depth and distance) lead to the conclusion that heavy fuel oil migration through the crushed rock environment occurred in the presence of water by the colloidal micelle mechanism.",
journal = "Journal of the Serbian Chemical Society",
title = "A contribution to the elucidation of oil migration mechanisms through water-wet sediments: Crushed rock environment as example",
volume = "61",
number = "11",
pages = "1025-1031",
url = "https://hdl.handle.net/21.15107/rcub_cherry_67"
}

Jovančićević, B., Tasić, L.Z., Vujasinović, S.O., Matić, I.D., Malović, D.D.,& Pfendt, P. A.. (1996). A contribution to the elucidation of oil migration mechanisms through water-wet sediments: Crushed rock environment as example. in Journal of the Serbian Chemical Society, 61(11), 1025-1031.
https://hdl.handle.net/21.15107/rcub_cherry_67

Jovančićević B, Tasić L, Vujasinović S, Matić I, Malović D, Pfendt PA. A contribution to the elucidation of oil migration mechanisms through water-wet sediments: Crushed rock environment as example. in Journal of the Serbian Chemical Society. 1996;61(11):1025-1031.
https://hdl.handle.net/21.15107/rcub_cherry_67 .

Jovančićević, Branimir, Tasić, L.Z., Vujasinović, S.O., Matić, I.D., Malović, D.D., Pfendt, Petar A., "A contribution to the elucidation of oil migration mechanisms through water-wet sediments: Crushed rock environment as example" in Journal of the Serbian Chemical Society, 61, no. 11 (1996):1025-1031,
https://hdl.handle.net/21.15107/rcub_cherry_67 .