Study on Characteristics of Heavy Metal Pollution and Its Controlling Measures in Lead Zinc Mine Area

The characteristics of heavy metal pollution and its controlling measures in lead zinc mine area of South Hunan province were studied. The results showed that the environmental problem in mine area is Pb, Zn, Cd and As related multi metal pollution. The major chemical form of heavy metal in polluted soils was found to be in residual fractions. Fine grained ore tailing particles is the major carrier for transportation of heavy metals. The contaminations of Pb, Cd in crops of mine area were very serious. Altering of cropping systems is an effective measure for controlling of heavy metal pollutions in lead zinc mine area.