朱仙庄煤矿周边土壤有机质和重金属的含量研究

为了解煤矿周边土壤有机质含量对重金属的影响,以宿州朱仙庄煤矿周边的农田为研究对象,测定了其土壤中有机质及重金属(Cr、Ni、Cu、Zn、As、Cd、Pb)含量.结果表明: Cu、Zn、As、Cd、Pb金属元素有轻度积累,但不会影响农业生产和生活; Cd的单因子污染指数高于4, 污染风险等级高; 研究区土壤中的有机质平均含量为50.53 g/kg,但各采样点土壤中的有机质含量差异较大,变异系数为0.81; Cu和As在土壤表层出现积累,且积累含量与有机质的含量呈显著正相关.本文的研究结果对相关部门进行土壤环境质量调查以及土壤合理利用有一定的参考价值.

Study on soil organic matter and heavy metals content around Zhuxianzhuang Coal Mine

In order to understand the influence of soil organic matter content around the coal mine on heavy metals, the farmland around the Zhuxianzhuang Coal Mine in Suzhou was used as the research object to determine the organic matter and heavy metals(Cr, Ni, Cu, Zn, As, Cd, Pb)in the soil content. The results indicated that the contents of Cu, Zn, As, Cd and Pb were accumulated slightly in soils, but it would not affect agricultural production and life of local residents; The single factor pollution index of Cd is higher than 4, and the pollution risk level is high; The average content of organic matter in the soil of the study area was 50.53 g/kg, but the content of organic matter in the soil of each sampling site was significantly different, with a coefficient of variation of 0.81. Cu and As accumulated in the surface layer of the soil, and the accumulated content was significantly positively correlated with the content of organic matter.The research results of this paper have certain reference value for relevant departments to carry out soil environmental quality investigation and soil rational utilization.