期刊
ENVIRONMENTAL POLLUTION
卷 176, 期 -, 页码 36-41出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2013.01.025
关键词
PBDEs; Compound-specific stable carbon isotope analysis; Metabolism debromination; Exposure experiment
资金
- National Nature Science Foundation of China [20890112, 40873074, 41273118, 41230639]
- Chinese Academy of Sciences [KZCX2-EW-QN 105]
- National Basic Research Program of China [2009CB4216604]
The debromination and trophic dynamics of PBDEs in fish and whether or not compound-specific isotopic analysis (CSIA) can be used to trace these processes were investigated. Two predator/prey relationships were established in laboratory by two predatory fish species, oscar fish (OF) and redtail catfish (RF) feeding on tiger barb (TB) exposed to a commercial PBDE mixture. Metabolic debromination of PBDEs was observed in the TB and the OF, but not in the RE The calculated biomagnification factors (BMFs) were uniform for most of the congeners in RF/TB but varied in OF/TB, which can be attributed to the metabolic debromination in the OR The delta C-13 values of BDE47 and BDE28 were lower in fish than in those in the commercial mixture but the delta C-13 values of BDE99 were slightly higher. These results indicated that CSIA can be used to trace the biotransformation of PBDEs in biota. (C) 2013 Elsevier Ltd. All rights reserved.
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