Heavy metal speciation, risk, and bioavailability in the sediments of rivers with different pollution sources and intensity.
作者： Wenzhong Tang , Baoqing Shan , Hong Zhang , Xiaolei Zhu , Shanshan Li
DOI: 10.1007/S11356-016-7575-3
关键词: Speciation 、 Environmental chemistry 、 Carbonate 、 Pollution 、 Bioavailability 、 Water pollution 、 Sediment 、 Ecotoxicology 、 Aquatic ecosystem 、 Chemistry
摘要: A comprehensive analysis of heavy metal speciation, risk, and bioavailability in the sediments three rivers northern China (Shaocun River (SR), Wangyang (WR), Xiao (XR)) was conducted. The results showed that higher pollution input resulting from urbanization industrialization caused contents bioavailable proportion studied sediments. Total all metals (Cr, Cu, Ni, Pb, Zn) SR, WR, XR were 270.31, 902.62, 2367.46 mg/kg, respectively. average percentages fractions 31.16, 61.73, 81.69 %, Cr, Pb mainly observed B4 (residual) fraction sediments, with an percentage 42.03, 48.19, 55.08 Cu B2 (reducible) (40.53 %). Zn B1 (exchangeable/acid soluble/carbonate) (36.01 %), medium or high risk associated XR. Sedimentary regional should be taken into consideration respect to health aquatic ecosystems.
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