title: Occurrence, bioaccumulation and potential sources of polybrominated diphenyl ethers in typical freshwater cultured fish ponds of South China.
abstract: To determine the potential input sources of polybrominated diphenyl ethers (PBDEs) to fish farming environments in South China, samples of seven various environmental matrices were collected from October 2006-September 2007. Tri- to deca-BDEs were detected in all samples analyzed, with mean concentrations (+ or - standard deviations) at 5.7 + or - 3.6 ng/L in pond water, 15 + or - 11 ng/g dry wt. in pond sediment, 12 + or - 3.8 ng/g dry wt. in bank soil, 21 + or - 20 ng/g lipid wt. in fish, and 93 + or - 62 ng/g lipid wt. in fish feeds. In addition, BDE-209 was the major constituent in all samples except fish and BDE-47 was predominant in fish samples. Relatively high abundances of BDE-49 were detected in all the samples compared to those in the penta-BDE technical products. Several bioaccumulation factors were evaluated. Finally, statistical analyses suggested that fish feed, as well as pond water at a lesser degree, may have been the major source of PBDEs in freshwater farmed fish.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Bao-Zhong
authors.initials: BZ
authors.lastname: Zhang
authors.forename: Hong-Gang
authors.initials: HG
authors.lastname: Ni
authors.forename: Yu-Feng
authors.initials: YF
authors.lastname: Guan
authors.forename: Eddy Y
authors.initials: EY
authors.lastname: Zeng
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D002681:China; D003257:Consumer Product Safety; D005398:Fisheries; D005399:Fishes / Q000378:metabolism*; D005618:Fresh Water / Q000032:analysis; D055768:Halogenated Diphenyl Ethers / Q000032:analysis* / Q000378:metabolism; D017747:Seafood / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
chemical_list: D055768:Halogenated Diphenyl Ethers; D014874:Water Pollutants, Chemical