Research on Ammonia Nitrogen Pollution and Its Spatial Distribution in Abandoned Mining Areas
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 0.959 5 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.
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