嘉峪关市土壤重金属污染现状评价

Assessment of heavy metal pollution in soil of Jiayuguan City

确定了4个典型的功能区,在各功能区选取具有代表性的采样点,采用单因子指数法、内梅罗综合污染指数法,对嘉峪关市及各个不同功能区的表层土壤重金属污染现状进行综合评价及分析.结果表明,嘉峪关市及4个不同功能区土壤重金属的含量均未超过国家二级标准,污染等级安全.

At first the four typical function areas are determined,and then some representative sampling points were selected according to their different functions in the city.Single factor method and Nemerow index method were used to give comprehensive evaluation of the current situation of the surface layer soil heavy metal pollution in Jiayuguan City.The results show that the quantity of soil heavy metal in Jiayuguan city do not go beyond the national secondary standard（GB）.The class of pollution is safe grade.