太原市地表土中五种重金属元素的污染监测及评价

该文研究了太原地区现阶段地表土中五种重金属元素的含量、分布规律，污染程度、污染原因及各元素间的相互关系。结果表明：Ｃｕ，Ｃｄ，Ｚｎ三元素含量超了中国土壤背景值；Ｃｕ，Ｃｒ，Ｚｎ，Ｍｎ四种元素城区平均含量高于郊区；Ｃｄ的城区平均含量低于郊区，且污染严重，范围广达１００％；元素间相关系数达显著水平的有１０对，最为密切的为Ｃｄ与Ｚｎ，ｒ＝０．８８８。

MONITORING AND EVALUATION OF HEAVY-METAL POLLUTION STATE IN SURFACE-LAYER SOLL OF TAIYUAN CITY

In this paper,the contents,the distribution pattens,pollution level,pollution origin and the interrelationships of five heavymetal elements in the surface-layer soil in Taiyuan District are investigated. This investigation shows that:1)The average amount of Cu, Cd, Zn elements containing in the soil respedively exceeds each background value of Chinese soil.2)The a verage quantities of Cu,Cr, Zn Mn elements containing in the soil in urban area are higher than the ones in suburb.3)The average amount of Cd element containing in the soil in the urban arca is lowerthan the one in the suburb.The state of Cd pollution is critical and the spread scope is ex-tended to 100%area.4)About the interrelation coefficients between elements,there are ten pairs reaching the stricing level,of which the closest one is Zn and Cd:r=0.888.