HU Ming,XUE Jiao,YAN Yu-lin,et al.Assessment and Trace Back to Source of Heavy Metal Pollution in Typical River Sediments in Beijing[J].China Water & Wastewater,2021,37(23 23):73-81.
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Assessment and Trace Back to Source of Heavy Metal Pollution in Typical River Sediments in Beijing

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 23 23 Page: 73-81 Column: Date of publication: 2021-12-01
Author(s):
HU Ming1; 2; XUE Jiao1; 3; YAN Yu-lin1; 2; JIN Gui-qin1; 2; WANG Pei-jing1; 2; QIU Yan-zhao1; 2; YANG Lan-qin1; 2; LIU Cao1; 2
(1. Beijing Water Science & Technology Institute, Beijing 100048, China; 2. Beijing Key Laboratory of Water Environment and Ecological Technology for River Basins， Beijing 100048， China； 3. School of Environment, Liaoning University, Shenyang 110036, China)
Keywords:
river sediment; heavy metal pollution; ecological risk; geoaccumulation index; potential ecological risk index; Nemerow comprehensive pollution index
Abstract:
To investigate the pollution characteristics and ecological risk of heavy metals in typical river sediments in Beijing, geoaccumulation index,potential ecological risk index and Nemerow comprehensive pollution index methods were used to evaluate sediment pollution in Xiaotaihou River based on characteristics of the river function, watershed characteristics and treatment methods, and the sources of heavy metals in river were identified and analyzed by principal component analysis.The overall heavy metal pollution level of Xiaotaihou River was relatively low, only some sections of the river were polluted by heavy metals such as Hg and Cd, and contents of most of the heavy metal at other points were at low levels. The evaluation results showed that the average geoaccumulation indices of the eight heavy metals in a descending order were Cd, Hg, Zn, Cu, Ni, As, Cr and Pb. The potential ecological risk indices showed that the values of E in a descending order were Hg, Cd, As, Cu, Ni, Pb, Zn and Cr. The comprehensive potential ecological risk index of the urban area and the river confluence reached a very strong ecological risk, and the Nemerow comprehensive pollution indices in these regions were high.The heavy metal pollution in Xiaotaihou River was originated from domestic sources, natural sources and industrial sources. The contents of heavy metals in the river sediment were higher at the confluence of the rivers.Therefore,attention should be paid to the deposition of the sediment near the confluence.
Last Update: 2021-12-01