Relationship between Heavy Metal Content in Polluted Soil and Soil Organic Matter and pH in Mining Areas

摘要

Taking the tailings dump of the beneficiation plant in Xiaoqinling Gold Mine as the research object,the characteristics of soil organic matter,pH value and heavy metal contents in soil were studied,and their correlations were analysed.The results showed that the content of soil organic matter in the study area was generally moderate,and the content was between 10.8 and 18.2 g/kg.The soil pH was weakly alkaline with the content ranging from 7.48 to 8.17.The contents of heavy metals such as Cu,Zn and Cd were serious Exceeded.There was a significant positive correlation between soil organic matter content and Ni,as,soil pH was negatively correlated with Cu,positively correlated with Ni,as and so on,but significantly positively correlated with Cr.Through the relationship between soil organic matter,pH and heavy metal content,it shows that soil organic matter and pH value are important indexes that affect heavy metal content in soil.