TY  - JOUR
AU  - Antić, Vesna
AU  - Antić, Mališa
AU  - Kronimus, Alexander
AU  - Schwarzbauer, Jan
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2920
AB  - 'On-line' pyrolysis coupled with gas chromatography (GC) was performed for quantitative determination of poly(vinylpyrrolidone) (PVP) in wastewater sample. Gas chromatography-mass spectrometry (GC-MS) showed that the main product of pyrolysis of PVP, at high temperatures, was N-vinylpyrrolidone (NVP). After that, different amounts of commercial PVP were pyrolyzed in order to establish the correlation between the amount of generated NVP (its GC peak area) and the initial mass of pyrolyzed PVP. GC-FID analysis was used for construction of the calibration curve and for quantitative determination of PVP. Very good linear correlation was obtained between the area of NVP peak, generated during pyrolysis, and the initial mass of PVP (r2 = 0.998). Further, solutions of known concentration of PVP were prepared in destilled water ('spiked samples'). Spiked samples were preextracted with diethyl ether and n-hexane, after which the water-layer was evaporated and dissolved again in methanol. Analysis of pyrolysates of preextracted spiked samples showed that the 'recovery' of PVP was above 96 mass%. This finding suggested that pre-extraction could be applied to reduce the concentration of organic substances that could also be pyrolyzed, and thus hinder identification and quantitative determination of PVP, without significant loss of polymer. The sample of an industrial wastewater from Pančevo, Serbia was investigated in the last part of this work. The sample was preextracted in the same way as the spiked samples and than pyrolyzed. NVP was identified by GC-MS in obtained pyrolysate, which was the evidence that PVP was present in the wastewater sample. NVP was quantified on the basis of the peak area in GC-FID chromatogram, and than the concentration of PVP in wastewater sample was calculated based on calibration curve. Concentration of PVP in industrial wastewater amounted 2.5 mg/L.
AB  - U ovom radu je primenjena metoda 'on-line' pirolize u sprezi sa gasnom hromatografijom (GC) za kvantitativno određivanje poli(vinilpirolidona) (PVP) u uzorku otpadne vode. Najpre je gasnomhromatografsko-masenospektrometrijskom analizom (GC-MS) utvrđeno da pirolizom PVP na visokim temperaturama kao glavni proizvod degradacije nastaje monomer, N-vinilpirolidon (NVP). Nakon toga su različite količine komercijalnog PVP pirolizovane da bi se uspostavila korelacija između količine nastalog NVP i inicijalne mase pirolizovanog polimera. Za konstruisanje kalibracione krive i kvantitativno određivanje PVP u rastvorima poznate koncentracije u destilovanoj vodi ('spiked samples'), kao i u uzorku otpadne vode, korišćena je GC analiza. Analizom rastvora komercijalnog PVP poznate koncentracije ustanovljeno je da PVP 'recovery', nakon ekstrakcije n-heksanom i dietil-etrom, iznosi iznad 96 mas.%. U poslednjem delu rada ispitan je uzorak industrijske otpadne vode iz Pančeva, Srbija. Pokazano je da je PVP bio prisutan u otpadnoj vodi i da je njegova koncentracija bila daleko iznad uobičajenih koncentracija niskomolekularnih organskih zagađivača.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Quantitative determination of poly(vinylpyrrolidone) by 'On-line' pyrolysis coupled with gas chromatography
T1  - Kvantitativno određivanje poli(vinilpirolidona) primenom 'On-line' pirolize kuplovane sa gasnom hromatografijom
EP  - 364
IS  - 3
SP  - 357
VL  - 66
DO  - 10.2298/HEMIND111114108A
ER  - 

@article{
author = "Antić, Vesna and Antić, Mališa and Kronimus, Alexander and Schwarzbauer, Jan",
year = "2012",
abstract = "'On-line' pyrolysis coupled with gas chromatography (GC) was performed for quantitative determination of poly(vinylpyrrolidone) (PVP) in wastewater sample. Gas chromatography-mass spectrometry (GC-MS) showed that the main product of pyrolysis of PVP, at high temperatures, was N-vinylpyrrolidone (NVP). After that, different amounts of commercial PVP were pyrolyzed in order to establish the correlation between the amount of generated NVP (its GC peak area) and the initial mass of pyrolyzed PVP. GC-FID analysis was used for construction of the calibration curve and for quantitative determination of PVP. Very good linear correlation was obtained between the area of NVP peak, generated during pyrolysis, and the initial mass of PVP (r2 = 0.998). Further, solutions of known concentration of PVP were prepared in destilled water ('spiked samples'). Spiked samples were preextracted with diethyl ether and n-hexane, after which the water-layer was evaporated and dissolved again in methanol. Analysis of pyrolysates of preextracted spiked samples showed that the 'recovery' of PVP was above 96 mass%. This finding suggested that pre-extraction could be applied to reduce the concentration of organic substances that could also be pyrolyzed, and thus hinder identification and quantitative determination of PVP, without significant loss of polymer. The sample of an industrial wastewater from Pančevo, Serbia was investigated in the last part of this work. The sample was preextracted in the same way as the spiked samples and than pyrolyzed. NVP was identified by GC-MS in obtained pyrolysate, which was the evidence that PVP was present in the wastewater sample. NVP was quantified on the basis of the peak area in GC-FID chromatogram, and than the concentration of PVP in wastewater sample was calculated based on calibration curve. Concentration of PVP in industrial wastewater amounted 2.5 mg/L., U ovom radu je primenjena metoda 'on-line' pirolize u sprezi sa gasnom hromatografijom (GC) za kvantitativno određivanje poli(vinilpirolidona) (PVP) u uzorku otpadne vode. Najpre je gasnomhromatografsko-masenospektrometrijskom analizom (GC-MS) utvrđeno da pirolizom PVP na visokim temperaturama kao glavni proizvod degradacije nastaje monomer, N-vinilpirolidon (NVP). Nakon toga su različite količine komercijalnog PVP pirolizovane da bi se uspostavila korelacija između količine nastalog NVP i inicijalne mase pirolizovanog polimera. Za konstruisanje kalibracione krive i kvantitativno određivanje PVP u rastvorima poznate koncentracije u destilovanoj vodi ('spiked samples'), kao i u uzorku otpadne vode, korišćena je GC analiza. Analizom rastvora komercijalnog PVP poznate koncentracije ustanovljeno je da PVP 'recovery', nakon ekstrakcije n-heksanom i dietil-etrom, iznosi iznad 96 mas.%. U poslednjem delu rada ispitan je uzorak industrijske otpadne vode iz Pančeva, Srbija. Pokazano je da je PVP bio prisutan u otpadnoj vodi i da je njegova koncentracija bila daleko iznad uobičajenih koncentracija niskomolekularnih organskih zagađivača.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Quantitative determination of poly(vinylpyrrolidone) by 'On-line' pyrolysis coupled with gas chromatography, Kvantitativno određivanje poli(vinilpirolidona) primenom 'On-line' pirolize kuplovane sa gasnom hromatografijom",
pages = "364-357",
number = "3",
volume = "66",
doi = "10.2298/HEMIND111114108A"
}

Antić, V., Antić, M., Kronimus, A.,& Schwarzbauer, J.. (2012). Quantitative determination of poly(vinylpyrrolidone) by 'On-line' pyrolysis coupled with gas chromatography. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 66(3), 357-364.
https://doi.org/10.2298/HEMIND111114108A

Antić V, Antić M, Kronimus A, Schwarzbauer J. Quantitative determination of poly(vinylpyrrolidone) by 'On-line' pyrolysis coupled with gas chromatography. in Hemijska industrija. 2012;66(3):357-364.
doi:10.2298/HEMIND111114108A .

Antić, Vesna, Antić, Mališa, Kronimus, Alexander, Schwarzbauer, Jan, "Quantitative determination of poly(vinylpyrrolidone) by 'On-line' pyrolysis coupled with gas chromatography" in Hemijska industrija, 66, no. 3 (2012):357-364,
https://doi.org/10.2298/HEMIND111114108A . .

TY  - JOUR
AU  - Antić, Vesna
AU  - Antić, Mališa
AU  - Kronimus, Alexander
AU  - Oing, Katja
AU  - Schwarzbauer, Jan
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2721
AB  - Poly(vinylpyrrolidone) (PVP) is a widely used and environmentally stable synthetic polymer whose occurrence in wastewater is likely. However, an appropriate method for identification and quantification of this polymer in environmental samples is still lacking. Hence, in this study an analytical method based on continuous-flow off-line pyrolysis-gas chromatography/mass spectrometry (pyrolysis-GC/MS) was developed to identify and quantify PVP in waste and surface water samples. Pyrolysis of commercial PVP, of some personal care products, of spiked water samples as well as of wastewater samples and river water samples was performed in a tube furnace at 500 degrees C under a continuous nitrogen flow. GC/MS was used for identification of specific degradation products, while GC-FID analysis was performed for quantitative determination. The concentration of PVP was calculated on the basis of the main pyrolytic product, N-vinylpyrrolidone (NVP). Very good linear correlation between initial amounts of PVP and released amounts of NVP was obtained and used as external calibration. The detected level of PVP in investigated personal care products was 6.4 (hair gel), 0.8 (laundry detergent) and 1.4%(tablets for throat disinfection). Spiked water samples, wastewater samples and river water samples were pre-extracted with hexane and diethyl ether prior to pyrolysis. It was found that the recovery of spiked samples was 94.6 +/- 1.6% which indicated that pre-extraction did not provoke significant loss of polymer. Finally, application of the developed method on real environmental samples (river water) revealed that PVP was present in effluents from wastewater treatment plants in concentrations between 0.9 mg/L and 7 mg/L, as well as in river water affected by municipal sewage emissions with concentrations around 0.1 mg/L.
PB  - Elsevier, Amsterdam
T2  - Journal of Analytical and Applied Pyrolysis
T1  - Quantitative determination of poly(vinylpyrrolidone) by continuous-flow off-line pyrolysis-GC/MS
EP  - 99
IS  - 2
SP  - 93
VL  - 90
DO  - 10.1016/j.jaap.2010.10.011
ER  - 

@article{
author = "Antić, Vesna and Antić, Mališa and Kronimus, Alexander and Oing, Katja and Schwarzbauer, Jan",
year = "2011",
abstract = "Poly(vinylpyrrolidone) (PVP) is a widely used and environmentally stable synthetic polymer whose occurrence in wastewater is likely. However, an appropriate method for identification and quantification of this polymer in environmental samples is still lacking. Hence, in this study an analytical method based on continuous-flow off-line pyrolysis-gas chromatography/mass spectrometry (pyrolysis-GC/MS) was developed to identify and quantify PVP in waste and surface water samples. Pyrolysis of commercial PVP, of some personal care products, of spiked water samples as well as of wastewater samples and river water samples was performed in a tube furnace at 500 degrees C under a continuous nitrogen flow. GC/MS was used for identification of specific degradation products, while GC-FID analysis was performed for quantitative determination. The concentration of PVP was calculated on the basis of the main pyrolytic product, N-vinylpyrrolidone (NVP). Very good linear correlation between initial amounts of PVP and released amounts of NVP was obtained and used as external calibration. The detected level of PVP in investigated personal care products was 6.4 (hair gel), 0.8 (laundry detergent) and 1.4%(tablets for throat disinfection). Spiked water samples, wastewater samples and river water samples were pre-extracted with hexane and diethyl ether prior to pyrolysis. It was found that the recovery of spiked samples was 94.6 +/- 1.6% which indicated that pre-extraction did not provoke significant loss of polymer. Finally, application of the developed method on real environmental samples (river water) revealed that PVP was present in effluents from wastewater treatment plants in concentrations between 0.9 mg/L and 7 mg/L, as well as in river water affected by municipal sewage emissions with concentrations around 0.1 mg/L.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Analytical and Applied Pyrolysis",
title = "Quantitative determination of poly(vinylpyrrolidone) by continuous-flow off-line pyrolysis-GC/MS",
pages = "99-93",
number = "2",
volume = "90",
doi = "10.1016/j.jaap.2010.10.011"
}

Antić, V., Antić, M., Kronimus, A., Oing, K.,& Schwarzbauer, J.. (2011). Quantitative determination of poly(vinylpyrrolidone) by continuous-flow off-line pyrolysis-GC/MS. in Journal of Analytical and Applied Pyrolysis
Elsevier, Amsterdam., 90(2), 93-99.
https://doi.org/10.1016/j.jaap.2010.10.011

Antić V, Antić M, Kronimus A, Oing K, Schwarzbauer J. Quantitative determination of poly(vinylpyrrolidone) by continuous-flow off-line pyrolysis-GC/MS. in Journal of Analytical and Applied Pyrolysis. 2011;90(2):93-99.
doi:10.1016/j.jaap.2010.10.011 .

Antić, Vesna, Antić, Mališa, Kronimus, Alexander, Oing, Katja, Schwarzbauer, Jan, "Quantitative determination of poly(vinylpyrrolidone) by continuous-flow off-line pyrolysis-GC/MS" in Journal of Analytical and Applied Pyrolysis, 90, no. 2 (2011):93-99,
https://doi.org/10.1016/j.jaap.2010.10.011 . .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Antić, Mališa
AU  - Pavlović, I.
AU  - Vrvić, Miroslav M.
AU  - Beskoski, Vladimir
AU  - Kronimus, Alexander
AU  - Schwarzbauer, Jan
PY  - 2008
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1632
AB  - This paper presents transformations of saturated hydrocarbons of petroleum type pollutants during ex situ bioremediation of soil on the pilot heap (halde), during a period of 6 months, within the grounds of Petroleum Refinery Pančevo (Serbia). Samples for analysis were taken in time intervals of 2 weeks (P1-P12 samples). Organic substance was extracted by Soxhlet's method and quantified. Isoprenoid aliphatics, in particular pristane and phytane, and polycyclic aliphatics of sterane and triterpane types in saturated hydrocarbon fractions were analysed by GC-MS (SIM method). Significant amounts of n-alkanes have not been detected. The MS-chromatogram revealed only marginal amounts of pristane and phytane in sample P1. Pristane and phytane occurred in sample P8, and in even higher quantities in the final sample P12. The proceeding bioremediation process was accompanied by the decrease of the relative amounts of pentacyclic terpanes of hopane type, compared to tri- and tetracyclic terpanes. In the initial sample P1 the distribution of steranes and hopanes follows a pattern, which is characteristic for crude oils. However, their identification by SIM method was not possible in samples P8 and P12 because of the reduced concentration. The observed changes in the alkane fractions' compositions may be considered as atypical, referring to the fact that during oil biodegradation under natural conditions, decomposition of isoprenoids occurs much easier and faster than decomposition of polycyclic alkanes of tri-, tetra- and pentacyclic terpane, sterane and diasterane types, after the decomposition of n-alkanes has been almost completed.
T2  - Water, Air, and Soil Pollution
T1  - Transformation of petroleum saturated hydrocarbons during soil bioremediation experiments
EP  - 307
IS  - 1-4
SP  - 299
VL  - 190
DO  - 10.1007/s11270-007-9601-z
ER  - 

@article{
author = "Jovančićević, Branimir and Antić, Mališa and Pavlović, I. and Vrvić, Miroslav M. and Beskoski, Vladimir and Kronimus, Alexander and Schwarzbauer, Jan",
year = "2008",
abstract = "This paper presents transformations of saturated hydrocarbons of petroleum type pollutants during ex situ bioremediation of soil on the pilot heap (halde), during a period of 6 months, within the grounds of Petroleum Refinery Pančevo (Serbia). Samples for analysis were taken in time intervals of 2 weeks (P1-P12 samples). Organic substance was extracted by Soxhlet's method and quantified. Isoprenoid aliphatics, in particular pristane and phytane, and polycyclic aliphatics of sterane and triterpane types in saturated hydrocarbon fractions were analysed by GC-MS (SIM method). Significant amounts of n-alkanes have not been detected. The MS-chromatogram revealed only marginal amounts of pristane and phytane in sample P1. Pristane and phytane occurred in sample P8, and in even higher quantities in the final sample P12. The proceeding bioremediation process was accompanied by the decrease of the relative amounts of pentacyclic terpanes of hopane type, compared to tri- and tetracyclic terpanes. In the initial sample P1 the distribution of steranes and hopanes follows a pattern, which is characteristic for crude oils. However, their identification by SIM method was not possible in samples P8 and P12 because of the reduced concentration. The observed changes in the alkane fractions' compositions may be considered as atypical, referring to the fact that during oil biodegradation under natural conditions, decomposition of isoprenoids occurs much easier and faster than decomposition of polycyclic alkanes of tri-, tetra- and pentacyclic terpane, sterane and diasterane types, after the decomposition of n-alkanes has been almost completed.",
journal = "Water, Air, and Soil Pollution",
title = "Transformation of petroleum saturated hydrocarbons during soil bioremediation experiments",
pages = "307-299",
number = "1-4",
volume = "190",
doi = "10.1007/s11270-007-9601-z"
}

Jovančićević, B., Antić, M., Pavlović, I., Vrvić, M. M., Beskoski, V., Kronimus, A.,& Schwarzbauer, J.. (2008). Transformation of petroleum saturated hydrocarbons during soil bioremediation experiments. in Water, Air, and Soil Pollution, 190(1-4), 299-307.
https://doi.org/10.1007/s11270-007-9601-z

Jovančićević B, Antić M, Pavlović I, Vrvić MM, Beskoski V, Kronimus A, Schwarzbauer J. Transformation of petroleum saturated hydrocarbons during soil bioremediation experiments. in Water, Air, and Soil Pollution. 2008;190(1-4):299-307.
doi:10.1007/s11270-007-9601-z .

Jovančićević, Branimir, Antić, Mališa, Pavlović, I., Vrvić, Miroslav M., Beskoski, Vladimir, Kronimus, Alexander, Schwarzbauer, Jan, "Transformation of petroleum saturated hydrocarbons during soil bioremediation experiments" in Water, Air, and Soil Pollution, 190, no. 1-4 (2008):299-307,
https://doi.org/10.1007/s11270-007-9601-z . .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Antić, Mališa
AU  - Solević, TM
AU  - Vrvić, Miroslav M.
AU  - Kronimus, Alexander
AU  - Schwarzbauer, Jan
PY  - 2005
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1010
AB  - BACKGROUND: , Aims and Scope. In oil spill investigations, one of the most important steps is a proper choice of approaches that imply an investigation of samples taken from different sedimentary environments, samples of oil contaminants taken in different periods of time and samples taken at different distances from the oil spill. In all these cases, conclusion on the influence of the environment, microorganisms or migration on the oil contaminants' composition can be drawn from the comparison of chemical compositions of the investigated contaminants. However, in case of water contaminants, it is very important to define which part of organic matter has been analyzed. Namely, previous investigations showed that there were some differences in chemical composition of the same oil contaminant depending on the intensity of its contact with ground water. The aim of this work is to define more precisely the interactions between oil contaminant and water, i.e. the influence of the intensity of interaction between the oil contaminant and water on its chemical composition. The study was based on a comparison of four fractionated extracts of an oil pollutant, after they had been analyzed in details. Methods. Oil polluted surface water (wastewater canal, Pancevo, Serbia) was investigated. The study was based on a comparison of four extracts of an oil contaminant: extract I (decanted part), and extracts 2, 3 and 4 (extracted by shaking for 1 minute, 5 minutes and 24 hours, respectively). The fractionated extracts were saponified with a solution of KOH in methanol, and neutralized with 10% hydrochloric acid. The products were dissolved in a mixture of dichloromethane and hexane, and individually fractionated by column chromatography on alumina and silica gel (saturated hydrocarbon, aromatic, alcohol and fatty acid fractions). n-Alkanes and isoprenoid aliphatic alkanes, polycyclic alkanes of sterane and triterpane types, alcohols and fatty acids were analyzed using gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). delta C-13(PDB) values of individual n-alkanes in the aliphatic fractions were determined using gas chromatography-isotope ratio monitoring-mass spectrometry (GC-irmMS). Results and discussion. Extracts 1 and 2 are characterized by uniform distribution of n-alkanes, whereas extract 3 is characterized by an even-numbered members dominating the odd-ones, and extract 4 showed a bimodal distribution. Extract I is characterized by the least negative delta C-13(PDB) values of C-19-C-26 n-alkanes. Sterane and triterpane analysis confirmed that all extracts originated from the same oil contaminant. n-Fatty acids, C-19-C-24, in all extracts are very low, being somewhat higher in extract 4. Even-numbered n-alcohols, C-12-C-16, were identified in the highest concentration in extract 3. It was assumed that algae were responsible for the composition of extract 3. Furthermore, a possible reason for higher concentrations of C-19-C-26 n-alkanes and C-19-C-24 fatty acids in extract 4 is the formation of inclusion compounds with colloidal micelles formed between the oil contaminant's NSO-compounds and water. Conclusion. It was undoubtedly confirmed that there were specific differences in the compositions of the different extracts depending on the intensity of the interaction between the oil contaminant and the surface water. Recommendation and Outlook. When comparing the composition of oil contaminants from different water samples (regardless of the ultimate investigation goal) it is necessary to compare the extracts isolated under the same conditions, in other words, extracts that were in the same or very similar interaction with water. Recommendation and Outlook. When comparing the composition of oil contaminants from different water samples (regardless of the ultimate investigation goal) it is necessary to compare the extracts isolated under the same conditions, in other words, extracts that were in the same or very similar interaction with water.
PB  - Springer Heidelberg, Heidelberg
T2  - Environmental Science and Pollution Research
T1  - Investigation of interactions between surface water and petroleum-type pollutants
EP  - 212
IS  - 4
SP  - 205
VL  - 12
DO  - 10.1065/espr2004.12.229
ER  - 

@article{
author = "Jovančićević, Branimir and Antić, Mališa and Solević, TM and Vrvić, Miroslav M. and Kronimus, Alexander and Schwarzbauer, Jan",
year = "2005",
abstract = "BACKGROUND: , Aims and Scope. In oil spill investigations, one of the most important steps is a proper choice of approaches that imply an investigation of samples taken from different sedimentary environments, samples of oil contaminants taken in different periods of time and samples taken at different distances from the oil spill. In all these cases, conclusion on the influence of the environment, microorganisms or migration on the oil contaminants' composition can be drawn from the comparison of chemical compositions of the investigated contaminants. However, in case of water contaminants, it is very important to define which part of organic matter has been analyzed. Namely, previous investigations showed that there were some differences in chemical composition of the same oil contaminant depending on the intensity of its contact with ground water. The aim of this work is to define more precisely the interactions between oil contaminant and water, i.e. the influence of the intensity of interaction between the oil contaminant and water on its chemical composition. The study was based on a comparison of four fractionated extracts of an oil pollutant, after they had been analyzed in details. Methods. Oil polluted surface water (wastewater canal, Pancevo, Serbia) was investigated. The study was based on a comparison of four extracts of an oil contaminant: extract I (decanted part), and extracts 2, 3 and 4 (extracted by shaking for 1 minute, 5 minutes and 24 hours, respectively). The fractionated extracts were saponified with a solution of KOH in methanol, and neutralized with 10% hydrochloric acid. The products were dissolved in a mixture of dichloromethane and hexane, and individually fractionated by column chromatography on alumina and silica gel (saturated hydrocarbon, aromatic, alcohol and fatty acid fractions). n-Alkanes and isoprenoid aliphatic alkanes, polycyclic alkanes of sterane and triterpane types, alcohols and fatty acids were analyzed using gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). delta C-13(PDB) values of individual n-alkanes in the aliphatic fractions were determined using gas chromatography-isotope ratio monitoring-mass spectrometry (GC-irmMS). Results and discussion. Extracts 1 and 2 are characterized by uniform distribution of n-alkanes, whereas extract 3 is characterized by an even-numbered members dominating the odd-ones, and extract 4 showed a bimodal distribution. Extract I is characterized by the least negative delta C-13(PDB) values of C-19-C-26 n-alkanes. Sterane and triterpane analysis confirmed that all extracts originated from the same oil contaminant. n-Fatty acids, C-19-C-24, in all extracts are very low, being somewhat higher in extract 4. Even-numbered n-alcohols, C-12-C-16, were identified in the highest concentration in extract 3. It was assumed that algae were responsible for the composition of extract 3. Furthermore, a possible reason for higher concentrations of C-19-C-26 n-alkanes and C-19-C-24 fatty acids in extract 4 is the formation of inclusion compounds with colloidal micelles formed between the oil contaminant's NSO-compounds and water. Conclusion. It was undoubtedly confirmed that there were specific differences in the compositions of the different extracts depending on the intensity of the interaction between the oil contaminant and the surface water. Recommendation and Outlook. When comparing the composition of oil contaminants from different water samples (regardless of the ultimate investigation goal) it is necessary to compare the extracts isolated under the same conditions, in other words, extracts that were in the same or very similar interaction with water. Recommendation and Outlook. When comparing the composition of oil contaminants from different water samples (regardless of the ultimate investigation goal) it is necessary to compare the extracts isolated under the same conditions, in other words, extracts that were in the same or very similar interaction with water.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Environmental Science and Pollution Research",
title = "Investigation of interactions between surface water and petroleum-type pollutants",
pages = "212-205",
number = "4",
volume = "12",
doi = "10.1065/espr2004.12.229"
}

Jovančićević, B., Antić, M., Solević, T., Vrvić, M. M., Kronimus, A.,& Schwarzbauer, J.. (2005). Investigation of interactions between surface water and petroleum-type pollutants. in Environmental Science and Pollution Research
Springer Heidelberg, Heidelberg., 12(4), 205-212.
https://doi.org/10.1065/espr2004.12.229

Jovančićević B, Antić M, Solević T, Vrvić MM, Kronimus A, Schwarzbauer J. Investigation of interactions between surface water and petroleum-type pollutants. in Environmental Science and Pollution Research. 2005;12(4):205-212.
doi:10.1065/espr2004.12.229 .

Jovančićević, Branimir, Antić, Mališa, Solević, TM, Vrvić, Miroslav M., Kronimus, Alexander, Schwarzbauer, Jan, "Investigation of interactions between surface water and petroleum-type pollutants" in Environmental Science and Pollution Research, 12, no. 4 (2005):205-212,
https://doi.org/10.1065/espr2004.12.229 . .