包头市典型工业区表层土壤中重金属污染状况及其潜在生态风险研究

为了解包头市典型工业企业对其所在地土壤中重金属含量的影响及污染现状,利用相关性系数对其表层土壤中7种重金属(Cu、Zn、Pb、Cr、Cd、Mn、Ni)来源进行研究,并采用内梅罗综合污染指数法和潜在生态危害指数对其污染状况进行评价。结果表明,7种重金属含量平均值均高于内蒙古土壤背景值,其中Cd、Mn、Ni超标率已达100%,而Cu、Pb、Zn的超标率分别为97%、93%和93%,只有Cr超标率较低(53%),污染程度依次为Cd〉Pb〉Cu〉Ni〉Zn〉Mn〉Cr,其中Pb和Cd为重度污染,Cu、Zn、Ni为中度污染,Cr、Mn为轻度污染;Cu、Zn、Cr、Mn、Ni可能同时来自工业生产和交通运输...

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Published in岩矿测试 Vol. 35; no. 4; pp. 433 - 439
Main Author 孙鹏 李艳伟 张连科 李玉梅 王维大 余维佳
Format Journal Article
LanguageChinese
Published 内蒙古科技大学能源与环境学院,内蒙古自治区 包头,014010%包头市辐射环境管理处,内蒙古自治区 包头,014010 2016
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Summary:为了解包头市典型工业企业对其所在地土壤中重金属含量的影响及污染现状,利用相关性系数对其表层土壤中7种重金属(Cu、Zn、Pb、Cr、Cd、Mn、Ni)来源进行研究,并采用内梅罗综合污染指数法和潜在生态危害指数对其污染状况进行评价。结果表明,7种重金属含量平均值均高于内蒙古土壤背景值,其中Cd、Mn、Ni超标率已达100%,而Cu、Pb、Zn的超标率分别为97%、93%和93%,只有Cr超标率较低(53%),污染程度依次为Cd〉Pb〉Cu〉Ni〉Zn〉Mn〉Cr,其中Pb和Cd为重度污染,Cu、Zn、Ni为中度污染,Cr、Mn为轻度污染;Cu、Zn、Cr、Mn、Ni可能同时来自工业生产和交通运输两个源,而Pb和Cd除上述来源外,燃煤烟气的排放有较大贡献。潜在生态危害依次为Cd〉Pb〉Cu〉Ni〉Cr〉Zn〉Mn,其中Cd的潜在生态风险最大,应予以高度重视,其他金属的风险均为轻微。
Bibliography:SUN Peng, LI Yan-wei , ZHANG Lian-ke , LI Yu-rnei , WANG Wei-da , YU Wei-jia ( 1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China; 2. Baotou Radiation Environment Management Office, Baotou 014010, China)
typical industrial area; heavy metals; pollution evaluation; source analysis; Baotou city
11-2131/TD
In order to understand the effect of industrial pollution in the Baotou industrial areas on heavy metal content in soils, correlation analysis was used to study the source of Cu, Zn, Pb, Cr, Cd, Mn, and Ni. The heavy metal pollution in the soils was assessed using the methods of Nemerow index and Hakanson' s ecological risk index. The results show that the contents of these seven heavy metals are higher than the background values of soils in Inner Mongolia. The exceeding ratios of Cd, Mn, Ni contents in soil are 100% , and Cu, Pb, Zn, Cr were 97%, 93% , 93% , 53% , respectively. The pollution degree of single elements showed the order of Cd 〉 Pb 〉 Cu 〉 N
ISSN:0254-5357
DOI:10.15898/j.cnki.11-2131/td.2016.04.016