海南省某金矿土壤污染特征分析

Analysis of soil pollution characteristics in a gold mine in Hainan Province

为探究氰化钠冶炼工艺下,规范化生产的金矿企业矿区土壤的污染情况及分布规律,本文进行了矿石化学元素检测和矿区土壤采样分析。结果表明:(1)矿区土壤污染主要为重金属砷、镉、汞的污染;除汞外,土壤重金属砷、镉超标的原因主要由矿石选冶造成。(2)矿区周边土壤重金属污染受风力影响范围有限,主要分布在矿区内部;部分重金属砷、镉可以随地表水迁移至较远处。

In order to explore the pollution range and distribution of soil in the gold mining area under standardized production of sodium cyanide smelting process,the chemical elements detection and soil sampling analysis of the gold mine were carried out.The results show that:(1)Soil pollution is mainly contaminated by heavy metals as arsenic,cadmium and mercury,and the reasons for excessive arsenic and cadmium in soil are mainly caused by ore dressing and metallurgy.(2)the heavy metal pollution of soil around the mining area is limited by wind force,mainly distributed within the mining area.A small amount of heavy metals,such as arsenic and cadmium,can migrate to the distance with the surface water.