In deriving 102 surface samples from farmland soil of Henan within the territory,it has been analyzed for element contents of 8 kind heavy metal,such as Cr,Zn,Cu,Pb, Ni.
結果表明:河南農田土壤中除Cr偶有超出我國《土壤環(huán)境質(zhì)量標準》(GB 15618—1995)二級標準的土樣外,其他項目均不超標,重金屬污染由高到低排序為Cr>Zn>Ni>Cd>Hg>Cu>Pb>As。