Analysis of Soil Heavy Metal Pollution in Northern Shaanxi Coal Mine Area

Abstract

Northern Shaanxi coal mine is an important energy base in Shaanxi Province, the ecological environment of this area is fragile, facing the huge opportunity of mining development, in the current "environmental protection priority" reality, it is urgent to find out the environmental background of this area, support the development of national energy strategy. The results showed that the contents of Hg, Cd, Pb and Cr were higher than the background values of soil in Shaanxi province, and the average contents of As, Zn and Cu were lower than the background values of soil in Shaanxi Province, but the maximum contents were 1.65, 1.01 and 2.16 times higher than the background values of soil in Shaanxi Province, respectively. The potential ecological risk assessment index shows that Hg has great potential ecological harm. Based on the cumulative effect of heavy metals in soil, we should pay close attention to the change of soil heavy metal concentration in the future mining development process to prevent the risk caused by heavy metal pollution.