Occurrence, bioaccumulation and potential sources of polybrominated diphenyl ethers in typical freshwater cultured fish ponds of South China.
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.
Zhang
Bao-Zhong
BZ
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
Ni
Hong-Gang
HG
Guan
Yu-Feng
YF
Zeng
Eddy Y
EY
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
D055768:Halogenated Diphenyl Ethers; D014874:Water Pollutants, Chemical