TY  - JOUR
AU  - Vidović, Nada
AU  - Antić, Vesna
AU  - Schwarzbauer, Jan
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6346
AB  - Reliable identification and quantification of water-soluble synthetic polymers (WSSP), such as polyethyleneimine (PEI), is crucial for understanding their potential impact on certain ecological environments. Therefore, this study proposes an analytical method combining on-line and off-line pyrolysis GC/MS to investigate the pyrolytic degradation. mechanism of branched PEI and develop a calibration method using specific pyrolysis. products, including methylpyrazine, dimethylpyrazine, ethylmethylpyrazine, trimethylpyrazine, methylpropylpyrazine and ethyldimethylpyrazine, for the. quantification of PEI in environmental wastewater samples. The developed analytical. method shows adequate linearity for all molecular ions of the specific pyrolysis. products, with a determination coefficient ranging from 0.95 to 0.98 for the range of 10–500 μg PEI. The limit of quantification for this method lies between 1 and 10 μg/L of PEI. The accuracy (absolute recovery 71–95%) and reproducibility (RSD < 30%) were. evaluated by multiple spiking/recovery experiments at a PEI level of 500 μg. Using this. method for samples collected from different wastewater treatment plants in Germany. reveals a significant emission of PEI to the aquatic environment with concentrations. ranging from 0.08 mg L-1–0.55 mg L-1, and thus demonstrating its applicability in. environmental studies. To the best of our knowledge, this is the first report on the. occurrence of PEI in environmental samples. © 2023 Elsevier B.V.
T2  - Journal of Analytical and Applied Pyrolysis
T2  - Journal of Analytical and Applied Pyrolysis
T1  - Determination of the water-soluble polymer poly(ethyleneimine) (PEI) in wastewater by continuous-flow off-line pyrolysis GC/MS
VL  - 172
DO  - 10.1016/j.jaap.2023.106001
ER  - 

@article{
author = "Vidović, Nada and Antić, Vesna and Schwarzbauer, Jan",
year = "2023",
abstract = "Reliable identification and quantification of water-soluble synthetic polymers (WSSP), such as polyethyleneimine (PEI), is crucial for understanding their potential impact on certain ecological environments. Therefore, this study proposes an analytical method combining on-line and off-line pyrolysis GC/MS to investigate the pyrolytic degradation. mechanism of branched PEI and develop a calibration method using specific pyrolysis. products, including methylpyrazine, dimethylpyrazine, ethylmethylpyrazine, trimethylpyrazine, methylpropylpyrazine and ethyldimethylpyrazine, for the. quantification of PEI in environmental wastewater samples. The developed analytical. method shows adequate linearity for all molecular ions of the specific pyrolysis. products, with a determination coefficient ranging from 0.95 to 0.98 for the range of 10–500 μg PEI. The limit of quantification for this method lies between 1 and 10 μg/L of PEI. The accuracy (absolute recovery 71–95%) and reproducibility (RSD < 30%) were. evaluated by multiple spiking/recovery experiments at a PEI level of 500 μg. Using this. method for samples collected from different wastewater treatment plants in Germany. reveals a significant emission of PEI to the aquatic environment with concentrations. ranging from 0.08 mg L-1–0.55 mg L-1, and thus demonstrating its applicability in. environmental studies. To the best of our knowledge, this is the first report on the. occurrence of PEI in environmental samples. © 2023 Elsevier B.V.",
journal = "Journal of Analytical and Applied Pyrolysis, Journal of Analytical and Applied Pyrolysis",
title = "Determination of the water-soluble polymer poly(ethyleneimine) (PEI) in wastewater by continuous-flow off-line pyrolysis GC/MS",
volume = "172",
doi = "10.1016/j.jaap.2023.106001"
}

Vidović, N., Antić, V.,& Schwarzbauer, J.. (2023). Determination of the water-soluble polymer poly(ethyleneimine) (PEI) in wastewater by continuous-flow off-line pyrolysis GC/MS. in Journal of Analytical and Applied Pyrolysis, 172.
https://doi.org/10.1016/j.jaap.2023.106001

Vidović N, Antić V, Schwarzbauer J. Determination of the water-soluble polymer poly(ethyleneimine) (PEI) in wastewater by continuous-flow off-line pyrolysis GC/MS. in Journal of Analytical and Applied Pyrolysis. 2023;172.
doi:10.1016/j.jaap.2023.106001 .

Vidović, Nada, Antić, Vesna, Schwarzbauer, Jan, "Determination of the water-soluble polymer poly(ethyleneimine) (PEI) in wastewater by continuous-flow off-line pyrolysis GC/MS" in Journal of Analytical and Applied Pyrolysis, 172 (2023),
https://doi.org/10.1016/j.jaap.2023.106001 . .

TY  - JOUR
AU  - Samelak, Ivan
AU  - Balaban, Milica
AU  - Vidović, Nada
AU  - Koljancić, Nemanja
AU  - Antić, Mališa
AU  - Šolević-Knudsen, Tatjana
AU  - Jovančićević, Branimir
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4760
AB  - In this paper, an attempt was made to contribute to the use of biological markers, n-alkanes, and polycyclic alkanes of the sterane and terpane type, in the assessment of the source of oil pollutants in the environment using the example of the correlation between recent river and coastal sediments,. Four samples of recent river sediments of the Vrbas River and four samples of adjacent bank sediments (soils), in the part of the River that belongs to the city of Banja Luka (Bosnia and Herzegovina) were analyzed. In the alkane fractions of isolated extracts, a bimodal distribution of the n-alkanes was observed. Lower homologues dominated in the recent river sediments with maximum at C15, but higher n-alkanes dominated in the soil samples, with a maximum at n-C29 or at n-C31. The higher concentration of steranes and terpanes with oil type distributions in the recent/fresh river sediments (compared to the bank sediments) represents evidence that lower n-alkanes originate from oil sources. The higher content of total hydrocarbons in the recent river sediments than in the bank sediments further confirms this conclusion. At the same time, these fundamental considerations provide evidence that oil pollution primarily occurred in the water flow and then the oil pollutants propagated towards the riverbank.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - Application of alkane biological markers in the assessment of the origin of oil pollutants in the soil and recent river sediments (River Vrbas, Bosnia and Herzegovina)
EP  - 1175
IS  - 10
SP  - 1167
VL  - 83
DO  - 10.2298/JSC180501061S
ER  - 

@article{
author = "Samelak, Ivan and Balaban, Milica and Vidović, Nada and Koljancić, Nemanja and Antić, Mališa and Šolević-Knudsen, Tatjana and Jovančićević, Branimir",
year = "2018",
abstract = "In this paper, an attempt was made to contribute to the use of biological markers, n-alkanes, and polycyclic alkanes of the sterane and terpane type, in the assessment of the source of oil pollutants in the environment using the example of the correlation between recent river and coastal sediments,. Four samples of recent river sediments of the Vrbas River and four samples of adjacent bank sediments (soils), in the part of the River that belongs to the city of Banja Luka (Bosnia and Herzegovina) were analyzed. In the alkane fractions of isolated extracts, a bimodal distribution of the n-alkanes was observed. Lower homologues dominated in the recent river sediments with maximum at C15, but higher n-alkanes dominated in the soil samples, with a maximum at n-C29 or at n-C31. The higher concentration of steranes and terpanes with oil type distributions in the recent/fresh river sediments (compared to the bank sediments) represents evidence that lower n-alkanes originate from oil sources. The higher content of total hydrocarbons in the recent river sediments than in the bank sediments further confirms this conclusion. At the same time, these fundamental considerations provide evidence that oil pollution primarily occurred in the water flow and then the oil pollutants propagated towards the riverbank.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "Application of alkane biological markers in the assessment of the origin of oil pollutants in the soil and recent river sediments (River Vrbas, Bosnia and Herzegovina)",
pages = "1175-1167",
number = "10",
volume = "83",
doi = "10.2298/JSC180501061S"
}

Samelak, I., Balaban, M., Vidović, N., Koljancić, N., Antić, M., Šolević-Knudsen, T.,& Jovančićević, B.. (2018). Application of alkane biological markers in the assessment of the origin of oil pollutants in the soil and recent river sediments (River Vrbas, Bosnia and Herzegovina). in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 83(10), 1167-1175.
https://doi.org/10.2298/JSC180501061S

Samelak I, Balaban M, Vidović N, Koljancić N, Antić M, Šolević-Knudsen T, Jovančićević B. Application of alkane biological markers in the assessment of the origin of oil pollutants in the soil and recent river sediments (River Vrbas, Bosnia and Herzegovina). in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2018;83(10):1167-1175.
doi:10.2298/JSC180501061S .

Samelak, Ivan, Balaban, Milica, Vidović, Nada, Koljancić, Nemanja, Antić, Mališa, Šolević-Knudsen, Tatjana, Jovančićević, Branimir, "Application of alkane biological markers in the assessment of the origin of oil pollutants in the soil and recent river sediments (River Vrbas, Bosnia and Herzegovina)" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 83, no. 10 (2018):1167-1175,
https://doi.org/10.2298/JSC180501061S . .