摘要
对广东省某燃煤电厂周边地区表层土壤重金属As、Cd、Cr、Cu、Hg、Mn、Pb、Zn的浓度进行了测定,分析了土壤重金属的分布特征和污染程度.结果表明,电厂附近土壤中测量的几种重金属的平均含量超过了广东省土壤的背景值.单因素指数和内梅罗污染指数分类结果表明,电厂周边土壤普遍受到重金属污染,Cr、Cu、Mn、Pb、Zn、Hg和As污染程度为轻度污染,而Cd污染程度为重度污染和中度污染,且电厂周边土壤的污染与电厂燃煤有很大关系;相关分析结果表明,燃煤电厂周边As、Hg、Cd、Pb可能具有相同的污染源.
Abstract
The concentrations of heavy metals As,Cd,Cr,Cu,Hg,Mn,Pb and Zn in surface soil around a coal-fired power plant in Guangdong Province were determined.The distribution characteristics and pollution degree of heavy metals in soil were analyzed.The results showed that the average content of several heavy metals measured in the soil around the power plant exceeded the background value of the soil in Guangdong Province.The classification results of single factor index and Nemerow pollution index showed that the soil around the power plant was generally polluted by heavy metals,Cr,Cu,Mn,Pb,Zn,Hg and As were mildly polluted,while Cd was severely polluted and moderately polluted.Moreover,the pollution of soil around the power plant was closely related to the coal burning of the power plant.The results of correlation analysis show that As,Hg,Cd and Pb around coal-fired power plants may have the same pollution sources.
维普
万方数据