Spatial Distribution of Heavy Metals in Fly Ash Reclamation

摘要

Samples were taken from fly ash reclaimed soil to investigate the spatial distribution of six heavy metals, namely Copper(Cu) , Zinc (Zn), Plumbum(Pb), Cadmium(Cd), Chromium(Cr), Nickel(Ni). It was found that, according to soil environment quality standards, the topsoil of the soil reclaimed by fly ash was severely polluted Cd and Ni, the contents of Pb, Zn, Cu, Cr do not exceed the soil background values, but already near the background values; the contents of Cu, Pb, Cd, Ni in the fry ash the soil reclaimed by fly ash exceed the soil background values, and all kinds of heavy metals had trend of migrating to the topsoil, threaten the quality of the topsoil.