ENANTIOMERIC SIGNATURE OF CHIRAL POLYCHLORINATED BIPHENYL ATROPISOMERS IN A BENTHIC FOOD CHAIN

Title
ENANTIOMERIC SIGNATURE OF CHIRAL POLYCHLORINATED BIPHENYL ATROPISOMERS IN A BENTHIC FOOD CHAIN
Author(s)
홍상희; 심원준; 임운혁; 김용녀
KIOST Author(s)
Hong, Sang Hee(홍상희)Shim, Won Joon(심원준)Yim, Un Hyuk(임운혁)
Publication Year
2008-08-17
Abstract
Sediment, polychaeta and flatfish were collected from Masan Bay, Korea in December 2004 and May 2005. Muscle, liver and stomach content of flatfish, polychaeta, and sediment were analyzed for polychlorinated biphenyls (PCBs) concentrations and the enantiomeric fractions (EFs) of six chiral PCB congeners (CBs 91, 95, 136, 149, 174, and 176) to quantify enantiomer-specific accumulation of PCBs in the benthic environment of the bay. Stomach content and stable isotope of carbon and nitrogen were analyzed in samples and used to confirm the prey and predator relationship between them. The total PCB concentrations in the samples clearly showed that PCBs are biomagnified in higher trophic level organisms. The congener pattern of chiral PCBs are similar to between the benthic food chain members, however, they had different chiral signatures, indicating that PCBs were accumulated enantioselectively through the food chain. The change of chiral signatures of chiral PCB atropisomers in the benthic food chain of the bay can be summarized as follows: CB 91, E2 to racemic; CB95, racemic to E1; CB 136, racemic to (-)-enantiomer; CB 149, (+)-enantiomer to racemic; CB 174, racemic to racemic.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/29841
Bibliographic Citation
제28회 할로겐족 지속성유기오염물질에 관한 국제 학술대회/Organohalogen Compounds, pp.345 - 348, 2008
Publisher
Dioxin 2008
Type
Conference
Language
English
Publisher
Dioxin 2008
Related Researcher
Research Interests

Microplastic pollution,Persistent Organic Pollutants,Oil Pollution,미세플라스틱 오염,잔류성 유기오염물질,유류오염

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