POLLUTION OF CADMIUM, ZINC AND LEAD IN BROWN EARTH
土壤中重金属镉锌铅复合污染的研究

The pollution of cadmium, zinc and lead in brown earth were studied. the Langmuir and Freundlich isotherms were fitted the adsorption data for lead and zinc respectively. None of them is suitable to cadmium. The order of desorption ration of the metals was: Zn>Cd>Pb.The binding of lead to the adsorption site was enforced with the presence of other metals. The fractionation, as well as their availabilities to spinach, of the metals are different from each other.