Occurrence and profiles of polybrominated diphenyl ethers (PBDEs) in riverine sediments of Shanghai: a combinative study with human serum from the locals |
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Authors: | Ming-Hong Wu Ben-Tuo Xu Gang Xu Ming-Nan Wang Jing Ma Chen-Yuan Pan Rui Sun Tao Han Liang Tang |
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Institution: | 1.Shanghai Institute of Applied Radiation, School of Environmental and Chemical Engineering,Shanghai University,Shanghai,People’s Republic of China;2.Jiading Yingyuan Hospital,Shanghai,People’s Republic of China |
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Abstract: | Herein, we studied the occurrence and profiles of thirteen PBDE congeners in 30 river sediment samples from Shanghai, China. The concentrations of Σ13PBDEs ranged from 110 to 13,071 pg g ?1 dw, with an average value of 2,841 pg g ?1 dw. BDE-209 was the predominant congener accounting for more than 65 % of total PBDEs, demonstrating that the major source of PBDEs in sediment samples was associated with the prevalent use of technical deca-BDE products. Moreover, low brominated BDEs in sediments also came from the degradation of higher brominated BDEs. In addition, taking into consideration of dietary exposure, PBDEs in serum samples collected from the locals were also detected with range of 419–26,744 pg g?1 (average 5,561 pg g ?1), which suggested a relatively low burden of PBDEs contamination to human body compared with the condition in other place. And in serum, low brominated compounds constituted the majority of total PBDE congeners. |
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