江西遂川金坑土壤重金属元素污染评价方法研究

摘要

以江西遂川金坑土壤化探采样为研究对象,对研究区内土壤中微量重金属元素As、Cu、Pb、Zn的含量数据,运用MAPGIS软件空间信息分析功能进行了分析,最终生成三角剖分网格,并对其进行平面等值线成图；运用单因子和多因子污染指数评价法进行评价,对比评价了土壤样品中重金属的污染因子和污染程度.其结果表明,研究区内存在不同程度的重金属污染,轻度污染、中度污染和重度污染均有,但多为轻度污染；污染范围主要分布柯树垇东西两侧区域以及上金坑以南区域,下金坑南西也有分布.%In this paper, soil samples of Jinkeng region in Suichuan were taken as research objects, and the geo-chemical data of heavy metal elements which mainly referred to As, Cu, Pb, Zn were analyzed. The spacial information analysis function in MAPGIS software was used to generate triangulation grid and plot plane isogram. With both single factor and multiple factor contamination index assessment method, the pollution factors and pollution level of heavy metals in mine soil were compared and analyzed. The results showed that there existed several degree of heavy metal pollution, including mild, moderate and severe pollution, and the mild pollution was the most degree. The pollution range distributed from east and west sides of Keshuao to the south of Shangjinkeng and the southwest of Xia-jinkeng.