矿粮复合区土壤中重金属污染特征研究

Characteristic Study on Heavy Metal Pollution in Soil of Mine-Grain Composite Zone

分析了典型矿粮复合区的土壤中主要重金属含量,并进行了相关评价。结果表明:由单因子指数法和综合污染指数法可得,研究区域较为清洁,但存在局部的铜和镉污染,其中镉污染相对较为严重。地累积指数法显示,所有金属都存在一定程度的累积,其中镉的累积最为严重,且分布极其不均。潜在生态风险指数法显示,镉存在不同程度的潜在生态风险,主要存在中生态危害。

This paper analyzes the heavy metal contents in the soil of typical mine-grain composite zone and the relative evaluations. The result shows that in accordance with the obtainment of the single gene index method and the comprehensive pollution index method, the overall study areas are clearer, but the local copper and cadmium pollution exists, thereinto, the cadmium pol-lution is relatively serious. The cumulative index method shows that all metals have some accumulations, the accumulation of cadmium sees most serious, and their distribution is uneven. The potential ecological risk index shows that the cadmium sees potential ecological risk at different degrees, mainly ecological harm.