Evaluation on environmental quality of heavy metals in vegetable plantation soils in the suburb of Hangzhou

Contents of heavy metals (Zn, Pb and Cu) in soils from four main areas of vegetable plantation in Hangzhou city suburb were investigated in order to evaluate environmental quality of heavy Metals. Different evaluation methods and evaluation standards of heavy metals were used for comparison. The results showed that the soils were polluted with heavy metals Zn ,Pb and Cu by using natural background values as evaluation standard; While using National Standard(GB 15618-1995)as evaluation standard, soils were not polluted with heavy metals Zn ,Pb and Cu. Of four investigated areas, Contents of heavy metals in Gongshu district of the city were the highest.