[1]胡明,薛娇,严玉林,等.北京市特征河流沉积物重金属污染评价与来源解析[J].中国给水排水,2021,37(23):73-81.
　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):73-81.
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北京市特征河流沉积物重金属污染评价与来源解析

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第23期 页码: 73-81 栏目: 出版日期: 2021-12-01
Title:
Assessment and Trace Back to Source of Heavy Metal Pollution in Typical River Sediments in Beijing
作者:
胡明1,2，薛娇1,3，严玉林1,2，金桂琴1,2，王培京1,2，邱彦昭1,2，杨兰琴1,2，刘操1,2
(1.北京市水科学技术研究院，北京100048；2.流域水环境与生态技术北京市重点实验室，北京100048；3.辽宁大学环境学院，辽宁沈阳110036)
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)
关键词:
河道沉积物; 重金属污染; 生态风险; 地累积指数法; 潜在生态危害指数法; 内梅罗综合污染指数法
Keywords:
river sediment; heavy metal pollution; ecological risk; geoaccumulation index; potential ecological risk index; Nemerow comprehensive pollution index
摘要:
为研究北京城市特征河流沉积物中重金属污染特征和生态风险，基于河流功能定位、流域特色和治理方式等特点，选取萧太后河作为研究对象，采用地累积指数法、潜在生态危害指数法和内梅罗综合污染指数法开展河流沉积物污染评价，并采用主成分分析法开展河流重金属来源识别与解析。评价结果表明，萧太后河整体重金属污染程度相对较低，仅在部分河段存在一定的Hg和Cd等重金属污染，其他点位的大部分重金属含量处于较低水平。地累积指数评价结果表明，8种重金属的平均地累积指数的大小排序为Cd>Hg>Zn>Cu>Ni>As＞Cr＞Pb；潜在生态危害指数评价结果表明，E值的大小排序为Hg>Cd>As>Cu>Ni>Pb>Zn>Cr，城中区和河流交汇处的综合潜在生态危害指数达到很强的生态风险，且这些区域的内梅罗综合污染指数较高。萧太后河重金属污染来源于生活源、自然源和工业源。河流中沉积物重金属含量在河流汇合口处较高，对于河流汇合口附近的沉积物淤积情况应引起重视。
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.
更新日期/Last Update: 2021-12-01