Abstract:
:The spatial and temporal distributions of polybrominated diphenyl ethers (PBDEs) were investigated in five sediment cores from the Yangtze River Delta of Yangtze River in China. The surficial concentrations of nine tri- through hepta-BDE congeners (Σ9BDEs) and BDE209 were highest at urban sites S3 and S2, followed by rural site S1 and estuary sites S5 and S4, respectively, based on dry sediment weight. Both BDE209 and ∑9BDE concentrations exponentially increased between 1990 and 2008. Commercial deca-BDE, penta-BDE, and octa-BDE products were likely PBDE sources in the study area. The relative abundances of BDE209 were higher in sediment cores from estuary than those from urban and rural locations, ascribing to the atmospheric transport from the adjacent densely populated northern and eastern coastal regions. This conclusion was further confirmed by the higher ratios of BDE47/BDE99 and BDE100/BDE99 in cores from the estuary than those from other locations.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Da C,Wang R,Xia L,Huang Q,Cai J,Cai F,Gao Cdoi
10.1016/j.marpolbul.2020.111714subject
Has Abstractpub_date
2020-11-01 00:00:00pages
111714eissn
0025-326Xissn
1879-3363pii
S0025-326X(20)30832-8journal_volume
160pub_type
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