废弃矿区氨氮污染及其空间分布情况研究

Research on Ammonia Nitrogen Pollution and Its Spatial Distribution in Abandoned Mining Areas

为了对废弃矿区的氨氮污染及其空间分布进行分析,研究选取了江西省一座废弃的稀土矿作为研究区域,并进行土壤和水采样点的设置。研究对样品中的氨氮含量进行了测量,采用单因子指数法对氨氮污染进行评价,并对该污染的空间分布进行分析。结果显示,土壤样品氨氮含量最大值为492.8134 mg·kg^(-1),最小值为0.9595 mg·kg^(-1)。水样品氨氮含量的最大值71.54 mg·L^(-1),最小值为0.32 mg·L^(-1)。研究区域积液地及其附近地区地表水氨氮污染和土壤氨氮污染更加严重。

In order to analyze ammonia nitrogen pollution and its spatial distribution in abandoned mining areas,this study selects a abandoned rare earth mine in Jiangxi Province as the research area,and sets up soil and water sampling points in the area.The study measures ammonia nitrogen content in the samples,evaluates ammonia nitro-gen pollution by the single factor index method,and analyzes the spatial distribution of the pollution.The results show that the maximum value of ammonia nitrogen content in soil samples is 492.8134 mg·kg^(-1) and the minimum value is 0.9595 mg·kg^(-1),the maximum value of ammonia nitrogen content in water samples is 71.54 mg·L^(-1) and the minimum value is 0.32 mg·L^(-1),and that ammonia nitrogen pollution and soil ammonia nitrogen pollutionin are more severe in the surface water of the efflux accumulation area and its surrounding areas in the study area.