PBDEs, PCBs and PCDD/Fs in the sediments from seven major river basins in China: Occurrence, congener profile and spatial tendency

Chemosphere
Pu WangGuibin Jiang

Abstract

Polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) were extensively investigated in the sediment samples collected from seven major river basins around China. The concentrations were in the range of 0.05-6.15 × 10(4) ng g(-1) dry weight (dw), 0.29-21.7 ng g(-1) dw and 0.01-6.49 ng g(-1) dw for PBDEs, PCBs and PCDD/Fs, respectively. The concentrations showed wide variations among different river basins, while the congener profiles in all the sediments were generally characterized by only a few compounds, such as BDE-209, -99 and -47, CB-11 and -28, OCDD and OCDF, etc. The spatial analysis identified a decreasing trend of these persistent organic pollutants (POPs) from south to north China, consistent with regional industrialization. However, relatively higher level of POPs was also observed in the upstream of Yellow River Basin. The present study gives insight into the spatial occurrence of the three POPs in the major river basins in China.

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Citations

Oct 16, 2016·Environmental Research·Mehreen IqbalKevin C Jones
Mar 2, 2018·Environmental Science and Pollution Research International·Xianfa SuJianhui Sun
Nov 21, 2018·Environmental Technology·Mara Rúbia de Lima E SilvaMaria Bernadete Amancio Varesche
Jul 22, 2018·International Journal of Environmental Research and Public Health·Jianchao LiuDonghai Wu
Jul 31, 2021·Journal of Hazardous Materials·Lin-Chi WangTa-Kang Liu

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