摘要
首先利用MATLAB软件绘制出某城市城区8种重金属浓度的等高线图,得出各种重金属元素在该城区的空间分布,初步得出5个区各重金属污染的程度。然后,进一步利用尼梅罗综合污染指数法对各类区的污染程度进行量化,得出各类区各种重金属的污染等级。利用污染综合评价表,分析该城市表层土壤的重金属污染主要原因。
Firstly, a contour map of the 8 kinds of heavy metal concentration of urban area of a city is drawn using the MATLAB software to get the spatial distribution of different kinds of heavy metal element in the city, and the preliminary conclusion of the pollution degree in 5 districts. What＇ s more, Nemero comprehensive pollution index method is used to qualify the pollution degree of various areas, and to achieve the pollution grade of all kinds of heavy metal in each area at the same time. The main cause of the heavy metal pollution in the surface soil of the city is analyzed by using the table of the comprehensive evaluation of pollution.
出处
《西昌学院学报（自然科学版）》
2013年第1期24-28,共5页
Journal of Xichang University(Natural Science Edition)
关键词
土壤
重金属
污染
尼梅罗污染指数
Soil
Heavy Metal
Pollution
Nemero pollution index
