title: Bioaccumulative characteristics of tetrabromobisphenol A and hexabromocyclododecanes in multi-tissues of prey and predator fish from an e-waste site, South China.
abstract: Tetrabromobisphenol A (TBBPA) and hexabromocyclododecanes (HBCDs) were analyzed in 12 tissues of prey (mud carp) and predator (northern snakehead) fish from an e-waste area, South China. The TBBPA concentrations in different tissues ranged from 0.03 to 2.85 ng/g wet weight (ww) in mud carp and 0.04 to 1.30 ng/g ww in northern snakehead. The concentrations of HBCDs ranged from 0.07 to 96.9 ng/g ww in mud carp and 0.18 to 240 ng/g ww in northern snakehead. HBCD levels in tissues were correlated with lipid content for both fish species, while this correlation was only found in mud carp for TBBPA. Meanwhile, northern snakehead exhibited higher HBCD levels but lower TBBPA levels than mud carps. These observations are attributed to the more polar and reactive properties of TBBPA than HBCDs. α-HBCD was the predominant diastereoisomer of HBCDs in all tissues of mud carp and northern snakehead, except for chyme of mud carp. All the analyzed tissues in mud carp showed an enrichment of (+)-α-HBCD enantiomer with EF (enantiomeric fraction) values of 0.53-0.62, but that in northern snakehead showed an enrichment of (-)-α-HBCD enantiomer with EF values of 0.35-0.5. Considering the fact that the mud carp is one of the diet items of northern snakehead, the different enantiomer accumulation characteristics of α-HBCD between the two fish species in the present study indicated that prey and predator fish could prefer to biotransform different enantiomers of α-HBCD.
authors: State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China.
authors: Bin
authors: B
authors: Tang
authors: Yan-Hong
authors: YH
authors: Zeng
authors: Xiao-Jun
authors: XJ
authors: Luo
authors: Xiao-Bo
authors: XB
authors: Zheng
authors: Bi-Xian
authors: BX
authors: Mai
mesh_terms: D000818:Animals; D001711:Biotransformation; D002347:Carps / Q000254:growth & development / Q000378:metabolism*; D002681:China; D059029:Electronic Waste; D004784:Environmental Monitoring / Q000379:methods*; D006842:Hydrocarbons, Brominated / Q000032:analysis* / Q000378:metabolism; D011075:Polybrominated Biphenyls / Q000032:analysis* / Q000378:metabolism
chemical_list: D006842:Hydrocarbons, Brominated; D011075:Polybrominated Biphenyls; C089796:hexabromocyclododecane; C020806:tetrabromobisphenol A