Journal
ENVIRONMENTAL POLLUTION
Volume 219, Issue -, Pages 932-938Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2016.09.043
Keywords
Yellow catfish; Fish size; Food web; Metabolism; Debromination; Stable isotope ratio; PBDEs
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Funding
- National Natural Science Foundation of China [41401571]
- Swedish Research Council [639-2013-6913]
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In this study, polybrominated diphenyl ethers (PBDEs) and methoxylated polybrominated diphenyl ethers (MeO-PBDEs) were analyzed in eleven freshwater fish species from Dianshan Lake, Shanghai, China. The highest concentrations of PBDEs and MeO-PBDEs were found in snakehead, with mean values of 38 ng g(-1) lw and 4.2 ng g(-1) lw, respectively. BDE-47 was the predominant congener of PBDEs, followed by BDE-154. Congener pattern variation of PBDEs was observed among different fish species, implying differences in biotransformation potential among fish. Yellow catfish showed highest concentrations of BDE-99, -153 and -183, suggesting that it is more resistant to debromination than any other fish analyzed in the present study. Trophic magnification factors were in the range of 1.35-1.81 for all the PBDE congeners, but not for 2'-MeO-BDE-68. Negative relationship was observed between PBDEs concentration and sample size (length and weight), indicating fish size dilution effect. (C) 2016 The Authors. Published by Elsevier Ltd.
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