Pollution characteristics and source analysis of soil heavy metals in east Junggar region

This paper takes different regions of Zhundong area as the research site, and collects the 168 soil samples for measuring the content of heavy metals including Zn、Cu、Cr、Hg、As and Pb.For evaluating soil pollution characteristics, the Nemerow pollution index (P_N) and pollution load index (PLI) are calculated, and based on the multivariable statistics pollution sources of the heavy metals are analyzed.The research results indicate that the average contents of Cr, Pb, Hg and As exceed the background value, exceeding standard rate between 30% and 100%, and have the heavy pollution trend, predominantly get the influences of anthropogenic and natural pollution sources; the places where affect by Zn and Cu are under the alert level, and Cr, Pb, Hg and As contributes more for pollution, regions contamination degree in the order of region A> region B> region C; the multivariable statistical analysis showes that there are significant correlation between Zn、Cu、Cr and As, and Pb have low correlation with the other elements; Zn and Cu may originate from parent materials, and Pb may derive from emission gases and tier wear, and As and Cr may affect by anthropogenic activities such as coal mining activities, industrial production and agricultural activity.