金属矿区重金属污染评价分析

Evaluation and Analysis of Heavy Metal Pollution in Metal Mining Areas

为了掌握西南某金属矿区重金属污染情况,本研究对矿区开采区、尾矿库等位置土壤的重金属总含量和水溶态含量进行测定,并根据测定结果对污染现状进行综合评价。结果表明,该金属矿区土壤均存在重金属复合污染,其中,Zn、Cr、Cd等重金属离子含量较高,采矿区土壤重金属污染最为严重,尾矿库位置土壤污染程度为中等,其余位置重金属污染程度为轻度。采矿区土壤重金属污染程度比尾矿库严重,主要原因是采空区内矿石重金属含量较高。研究成果可为该矿区后续重金属治理提供一定借鉴。

In order to grasp the pollution of heavy metals in a metal mining area in Southwest China,the total heavy metal content and water-soluble content of the soil in mining areas and tailings ponds,etc.were measured,and the current pollution status was comprehensively evaluated based on the measurement results in this paper.The results showed that the soils in this metal mining area are all polluted by heavy metals,among them,the content of heavy metal ions such as Zn,Cr,and Cd is relatively high,and soil heavy metal pollution in mining areas is the most serious,the level of soil pollution in the tailings pond is moderate,and the level of heavy metal pollution in other locations is light.The pollution degree of soil heavy metals in mining areas is more serious than that of tailings ponds,mainly due to the higher content of heavy metals in ore in the mined-out areas.The research results can provide a certain reference for the follow-up heavy metal treatment in this mining area.