武昌区表层土壤重金属污染统计分析和评价

摘要

以武昌区表层土壤(0~20 cm)为研究对象，分别采取不同功能区的表层土壤样品，通过室内检测分析，研究3个功能区表层土壤中8种重金属的积累情况，并采用污染指数法和因子分析法对土壤污染状况及污染来源进行分析评价。结果显示：武昌区表层土壤总体处于清洁水平，只有重金属Hg污染水平处于警戒水平；重金属Cu、 As、 Cd、 Hg主要来源于交通区和工业区， Cr、 Ni、 Zn主要来源于工业区和农业区，重金属Pb在工业区含量较高。%The authors take the surface soils(0~20 cm) of WuChang district as the research object. The accumulation characteristics of eight kinds of heavy metals in three types of different functional areas of surface soil were studied by means of area sampling and laboratory detection. And the soil pollution status and sources were analyzed and evaluated through the pollution index method and factor analysis method. The result shows that the surface soil of Wuchang district totally kept in clean condition,only the content of Hg stayed at the alert level. Cu,As,Cd and Hg mainly came from traf-fic area and industrial area;Cr,Ni,Zn mainly came from the industrial and agricultural areas,and the content of Pb was at a high accumulation level in the industrial area.