title: [Levels distribution and risk assessment of the indicator and dioxin-like polychlorinated biphenyls in ten different species of marine fish of Bohai Bay, China].
abstract: Polychlorinated biphenyls (PCBs) are highly lipohilic compounds with high metabolic persistence and toxicity. PCBs tend to accumulate in the aquatic food chain and make fish a source of various environmental toxicants to humans. Industries in the Bohai Bay include iron and steel smelting, cement manufacturing and waste incineration, which are potential emission sources of PCBs. In this study, risks and potential effects of PCBs in the Bohai Bay were assessed. Twelve dioxin-like polychlorinated biphenyls (dl-PCBs) and seven indicator PCBs in marine fish samples were analyzed by High Resolution Gas Chromatography/High Resolution Mass Spectrometry (HRGC/HRMS). The concentrations of dl-PCBs in marine fishes ranged from 28.9 pg x g(-1) to 1067.6 pg x g(-1) wet weight. The concentrations of indicator PCBs were between 185.5 pg x g(-1) and 8 371.7 pg x g(-1) wet weight. PCB-118 and PCB-105 were the major congeners of the dl-PCBs congeners, which contributed 41% - 56% and 15% - 21%, respectively. The predominant indicator PCBs were PCB-153 and PCB-138, which contributed 27% and 22%, respectively. The concentrations of dl-PCBs and indicator PCBs were relatively low as compared with those in other studies.
authors.forename: Sha-Sha
authors.initials: SS
authors.lastname: Wang
authors.forename: Li-Rong
authors.initials: LR
authors.lastname: Gao
authors.forename: Yi-Ling
authors.initials: YL
authors.lastname: Tian
authors.forename: Shuai
authors.initials: S
authors.lastname: Zhu
authors.forename: Qin
authors.initials: Q
authors.lastname: Zhang
mesh_terms: D000818:Animals; D061006:Bays; D002681:China; D004147:Dioxins / Q000032:analysis; D004784:Environmental Monitoring; D005399:Fishes; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D018570:Risk Assessment; D012623:Seawater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D004147:Dioxins; D014874:Water Pollutants, Chemical; C067940:2,3,3',4,4'-pentachlorobiphenyl; C070055:2,3',4,4',5-pentachlorobiphenyl; C029790:2,2',3',4,4',5-hexachlorobiphenyl; D011078:Polychlorinated Biphenyls; C014024:2,4,5,2',4',5'-hexachlorobiphenyl