Endocrine disrupting compounds in sediment from KimNguu river, Northern area of Vietnam: a comprehensive assessment of seasonal variation, accumulation pattern and ecological risk

被引:0
|
作者
Vu Duc Toan
To Xuan Quynh
Nguyen Thi Lan Huong
机构
[1] Thuyloi University,Department of Environment
[2] Trade Union University,undefined
来源
Environmental Geochemistry and Health | 2020年 / 42卷
关键词
Seasonal variation; EDCs; Sediment; Ecological risk;
D O I
暂无
中图分类号
学科分类号
摘要
This research presents the assessment of seasonal variation, accumulation pattern and ecological risk of selected endocrine disrupting compounds (S-EDCs) in sediment samples covering six sites in KimNguu river, Hanoi, Northern area of Vietnam. Selected EDCs compose polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs) and polybrominated diphenyl ethers (PBDEs). Sediment sampling was carried out in dry season (April) and wet season (October) in 2018. Results pointed out a significant contamination with ∑6PCBs, ∑16PAHs and ∑7PBDE concentrations ranging from 4.73 to 36.34 ng g−1 dw, from 3.57 to 84.39 ng g−1 dw and from 4.49 to 12.49 ng g−1 dw, respectively. Composition analyses indicated the predominance of PCB 138, PCB 153, M-PAHs (Middle molecular weight PAHs: BaA, Chr, Pyr, Flt), BDE-47, BDE-99 and BDE-209. The values of TEQDL-PCBs, TEQ∑8PAHs and TEQ∑16PAHs range from 4.6 to 10.4 ng kg−1 dw, from 0.28 to 1.28 ng g−1 dw and from 0.29 to 1.38 ng g−1 dw, respectively. Ecological risks of S-EDCs range from very low to medium levels in the sediment of KimNguu river.
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页码:647 / 659
页数:12
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