The Research about Heavy Metals of Four Kinds of Edible Crops in Landfill Area of Xinzhuangzi Mine of Huainan

摘要

The research about four kinds of edible crop and heavy metals around the roots of the soil was done in the landfill area of Xinzhuangzi mine in Huainan city.Different absorption content and enrichment coefficients of heavy metals were got.The result showed that the absorption content of heavy metals in different crops was different.The Cu enrichment coefficients of corn and chill were more than 1,but for Cr and Cd were very small.And the heavy metal content of all parts of the crops was also very different,the absorption of all the heavy metals in the turnip leaf was more than the root's; the absorption of Cu,Ni,Cr,Pb and Cd in the root of corn and chill was more than that in the leaf's and the fruit's.But,the content of Zn in the leaf was the highest.The content of Cu,Zn and Ni in the fruit was more than that in the leaf's and root's,Pb in the leaf more than in the fruit's and the root's.The content of Cu,Zn,Pb and Cr in the fruits of turnip and soybean was above this national food sanitary standard,only Cd was up to the standard;the content of Cu,Zn and Pb in the fruits of corn was above the standard,only Cr and Cd are up to the standard; and the content of all the heavy metals in the fruits of chill were up to the standard.