RESEARCH OF THE CHANGE OF HEAVY METAL CONCENTRATIONIN THE SOIL AROUND THECOAL MINING WASTE DUMP

摘要

This paper regards Yanma coal mining waste dump as the subject investigated. The surface layer soil around the mountainrnwas gathered, and the heavy metal content and pH were measured out. Adopting Euclid approach degree assessment method, the heavyrnmetal (Pb, Zn, Cu, Cr, Cd) pollution situation of the soil was researched according to the distance of coal mining waste dump. Thernconclusion is that heavy metal polluted the soil in certain distance to the coal mining waste dump, and the content is negative correlationrnwith the distance to the coal mining waste dump.