Polybrominated diphenyl ethers and its methoxylated analogues in biota and sediment samples from two freshwater lakes in Yangtze River delta |
| |
| Authors: | Xinyu Du Hong Chang Yihui Zhou Yanling Qiu Yan Wu Zhifen Lin Zhiliang Zhu Jianfu Zhao |
| |
| Institution: | 1.Key Laboratory of Yangtze River Water Environment (Ministry of Education), College of Environmental Science and Engineering,Tongji University,Shanghai,China;2.State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering,Tongji University,Shanghai,China;3.Department of Zoology,Southern Illinois University Carbondale,Carbondale,USA;4.Shanghai Key Lab of Chemical Assessment and Sustainability, College of Environmental Science and Engineering,Tongji University,Shanghai,China |
| |
| Abstract: | In the present study, sediments and biotas from two freshwater lakes in Yangze delta area were collected and analyzed for polybrominated diphenyl ethers (PBDEs) and methoxylated PBDEs (MeO–PBDEs). The concentrations of PBDEs in sediments and biotas ranged from 0.41 to 5.8 ng/g dry weight and from 4.6 to 100 ng/g lipid weight, respectively, while those of MeO–PBDEs were much lower (sediment: <LOQ-0.014 ng/g dry weight, biota: <LOQ-2.1 ng/g lipid weight). The levels of both brominated substances in sediments and biotas were in the moderate to low range compared with other studies. Different BDE congeners were found between two lakes probably due to the different exogenous sources and metabolic stages. Similar occurrence of higher brominated congeners (e.g., BDE-209) in sediments and biotas indicated sediments as a possible source of PBDEs for biotas. The different contribution of lower and higher brominated congeners between sediments and biotas may be due to the combined effect of biotransformation and bioavailability. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
