Polybrominated diphenyl ethers in surface sediments from principal watersheds of Shanghai, China: levels, distribution, influencing factors, and risk assessment

被引:0
作者
Ming-Hong Wu
Liang Tang
Gang Xu
Jing Ma
Ning Liu
Liang Wang
Jian-Qiu Lei
机构
[1] Shanghai University,School of Environmental and Chemical Engineering
[2] Chinese Academy of Sciences,Shanghai Institute of Optics and Fine Mechanics
来源
Environmental Science and Pollution Research | 2013年 / 20卷
关键词
Polybrominated diphenyl ethers (PBDEs); Shanghai; Sediment; Distribution; Risk assessment;
D O I
暂无
中图分类号
学科分类号
摘要
Fourteen and 17 sediment samples were collected from three main rivers of Shanghai in July and November, respectively. Eight polybrominated diphenyl ether (PBDE) congeners (BDE-28, BDE-47, BDE-99, BDE-100, BDE-153, BDE-154, BDE-183, and BDE-209) were detected in these samples to clarify the pollution status in the metropolis. Instrumental analyses showed that the concentrations of ∑8PBDEs ranged from 10.97 to 64.05 ng/g dry weight (dw), with an average value of 29.71 ng/g dw. BDE-209 was the predominant congener accounting for more than 97 % of total PBDEs, followed by BDE-47 and BDE-99. Remarkable spatial and seasonal distributions of PBDE concentrations were observed, suggesting that local sources, seasonal climates, and hydrologic conditions might be the influencing factors. Moderate correlations (r2 = 0.28–0.51, p < 0.05) were found between total organic carbon and PBDEs, which indicated that organic carbon content influenced the distributions of PBDEs in sediment of Shanghai at some extent. Hazard quotients revealed PBDEs posed no potential risk to benthic organisms in the study area at present.
引用
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页码:2651 / 2660
页数:9
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