title: Diasteroisomer and enantiomer-specific profiles of hexabromocyclododecane and tetrabromobisphenol A in an aquatic environment in a highly industrialized area, South China: vertical profile, phase partition, and bioaccumulation.
abstract: Tetrabromobisphenol A (TBBPA) and hexabromocyclododecanes (HBCDs) were determined in water, sediments, sediment cores, and three fish species from a river running through a highly industrialized area in South China. TBBPA concentrations exceeded those of HBCDs in the sediment and the dissolved phase of water and its levels in fish were at the high end of worldwide figures. 26% of HBCDs and 99% of TBBPA were found in dissolved phase of water. Plecostomus occupying high trophic level exhibited higher HBCD levels and higher abundance of α-HBCD than mud carp and nile tilapia which occupy low trophic level. An enrichment of (+)-α-HBCD in three fish species but (-)-α-HBCD in sediment was observed. As for γ-HBCD, most of sediment exhibited racemic while a species-dependence in fish sample was found. No clear trend was found for vertical distribution of enantiomeric profile for γ-HBCD, suggesting that the enantioselectivity of degradation of γ-HBCD is limited.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Ming-Jing
authors.initials: MJ
authors.lastname: He
authors.forename: Xiao-Jun
authors.initials: XJ
authors.lastname: Luo
authors.forename: Le-Huan
authors.initials: LH
authors.lastname: Yu
authors.forename: Jiang-Ping
authors.initials: JP
authors.lastname: Wu
authors.forename: She-Jun
authors.initials: SJ
authors.lastname: Chen
authors.forename: Bi-Xian
authors.initials: BX
authors.lastname: Mai
mesh_terms: D000818:Animals; D002681:China; D004784:Environmental Monitoring; D005399:Fishes / Q000378:metabolism; D005411:Flame Retardants / Q000032:analysis; D019015:Geologic Sediments / Q000737:chemistry; D006842:Hydrocarbons, Brominated / Q000032:analysis* / Q000378:metabolism; D007221:Industry; D011075:Polybrominated Biphenyls / Q000032:analysis* / Q000378:metabolism; D045483:Rivers / Q000737:chemistry; D013237:Stereoisomerism; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D005411:Flame Retardants; D006842:Hydrocarbons, Brominated; D011075:Polybrominated Biphenyls; D014874:Water Pollutants, Chemical; C089796:hexabromocyclododecane; C020806:tetrabromobisphenol A