title: Chlorinated and brominated organic contaminants in fish from Shanghai markets: a case study of human exposure.
abstract: In the present study were two favorite edible fish species for local residents, i.e., mandarin fish and crawfish, collected from the Shanghai market and analyzed for selected organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), hexabromocyclododecane (HBCDD), polybrominated diphenyl ethers (PBDEs) and methoxylated PBDEs (MeO-PBDEs). Efforts were also made to identify the potential sources of these contaminants. Comparable concentrations of hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs) and HBCDD were found in muscle tissue of mandarin fish from Guangdong (GDF), the Pearl River Delta and from Taihu Lake (TLF), the Yangtze River Delta. Levels of chlordanes, PCBs and PBDEs were about one magnitude lower in TLF compared to GDF. The concentrations of OCPs in the butter-like gland of the crawfish (CFB) were 2-5 times of those in the crawfish muscle (CFM) while concentrations of PCBs, PBDEs and MeO-PBDEs were comparable. The different patterns and levels of chlorinated and brominated organohalogen contaminants seen in mandarin fish from GDF and TLF indicates that different types of chemicals might be used in the two delta regions. The present study also shows a good correlation between the concentrations of hexachlorobenzene (HCB) and pentachloroanisol (PCA) in fish for the first time. Fish consumption limits based on chemical contaminants with non-carcinogenic effects were calculated. The estimated maximum daily consumption limit for GDF, TLF, CFM and CFB were 1.5, 2.6, 3.7 and 0.08 kg, respectively, indicating no significant risk regarding the persistent organic pollutants measured in the present study.
authors: State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. ylqiu@tongji.edu.cn
authors: Yanling
authors: Y
authors: Qiu
authors: Anna
authors: A
authors: Strid
authors: Anders
authors: A
authors: Bignert
authors: Zhiliang
authors: Z
authors: Zhu
authors: Jianfu
authors: J
authors: Zhao
authors: Maria
authors: M
authors: Athanasiadou
authors: Ioannis
authors: I
authors: Athanassiadis
authors: Åke
authors: Å
authors: Bergman
mesh_terms: D000818:Animals; D003400:Astacoidea / Q000378:metabolism*; D002681:China; D004781:Environmental Exposure; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000378:metabolism*; D005506:Food Contamination / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D055768:Halogenated Diphenyl Ethers / Q000378:metabolism; D006801:Humans; D006842:Hydrocarbons, Brominated / Q000378:metabolism; D006843:Hydrocarbons, Chlorinated / Q000378:metabolism; D060106:Lakes; D010473:Perciformes / Q000378:metabolism*; D010575:Pesticides / Q000378:metabolism; D011078:Polychlorinated Biphenyls / Q000378:metabolism; D011634:Public Health; D018570:Risk Assessment; D045483:Rivers; D014018:Tissue Distribution
chemical_list: D004785:Environmental Pollutants; D055768:Halogenated Diphenyl Ethers; D006842:Hydrocarbons, Brominated; D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; C089796:hexabromocyclododecane; D011078:Polychlorinated Biphenyls