The effects of chemical remediation treatments on the extractability and speciation of cadmium and lead in contaminated soils.

摘要: Two rural soils contaminated by cadmium (Cd) and lead (Pb) were used to evaluate the effect of different chemical treatments on changes in speciation extractability Cd Pb, phytoavailability wheat. Triplicates seven tested compare remediation techniques for using pot experiments. Treatments applied calcium carbonate, a high quantity phosphate salt, hog composts, iron oxide, manganese zeolite, unamended control. Wheat (Triticum aestivum) was planted amended further one month effectiveness uptake Pb wheat shoots. Results indicated that addition or zeolite reduces both soils, significantly reduce Changes metal sequential fractionations indicate exchangeable (or available) form two can be transformed into unavailable forms after these amendments.