title: [Levels, distribution and possible sources of polybrominated diphenyl ethers in river sediments from an electronic waste recycling area].
abstract: The concentrations of 41 polybrominated diphenyl ethers (PBDEs) in the river sediments from Luqiao were analyzed by GC-NCI-MS. The objectives of this study were to understand the contents, spatial distribution and sources. The Sigma40 PBDEs (excluding BDE209) concentrations in sediments sampled were in the range of 0.177 to 161 ng x g(-1), with a mean of 22.5 ng x g(-1), and the concentrations of BDE209 were from 0.36 to 958 ng x g(-1), with a mean of 148 ng x g(-1). Deca-BDE was the most predominant in 9 PBDE homologues in most of samples, accounting for 38.4%-96.0%, with an average of 74.4% nona-BDEs and hepta-BDEs, accounting for 3.3%-25.8% and 0.01%-14.1%, respectively. Significant correlations were observed among all of PBDEs congeners, which suggested these PBDEs might have the similar sources. The homologue composition of PBDEs and hierarchical cluster analysis (HCA) showed that most of sampling sites were mainly polluted by deca-BDE formulation, and others polluted by deca-BDE and octa-BDE formulations. Compared to other studies from different countries and regions, the PBDEs concentrations in the present study were at a medium-to-low level. But it should be concerned that a few of sampling sites were highly contaminated by point sources.
authors: Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China. wangxt0323@yahoo.com.cn
authors: Xue-Tong
authors: XT
authors: Wang
authors: Fei
authors: F
authors: Wang
authors: Jin-Pan
authors: JP
authors: Jia
authors: Yuan-Cheng
authors: YC
authors: Li
authors: Yang-Zhao
authors: YZ
authors: Sun
authors: Ming-Hong
authors: MH
authors: Wu
authors: Guo-Ying
authors: GY
authors: Sheng
authors: Jia-Mo
authors: JM
authors: Fu
mesh_terms: D059029:Electronic Waste; D004784:Environmental Monitoring; D005618:Fresh Water / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D019015:Geologic Sediments / Q000737:chemistry*; D055768:Halogenated Diphenyl Ethers / Q000032:analysis*; D059027:Recycling; D045483:Rivers; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D055768:Halogenated Diphenyl Ethers; D014874:Water Pollutants, Chemical