Investigation and Assessment of the Heavy Metal Pollution of Sewaged Soil in Tongliao

In this paper, the content of heavy metals of the sewage irrigation soil were determined and analysis around the second wastewater treatment plant in Tongliao, China, a total of 75 sampling points collected. The results showed that 6 sampling points of Hg were over the second standard values of "soil environmental quality standard" , and the contents of Cu, Zn, Pb, Cr, Cd, As and Ni were accord with the limits; The content of Pb, As, Ni, Zn, Cu and moisture content, OM in soil expressed marked correlation. And the content of each heavy metal was significantly different.