Abstract
Effect of the biodegradable chelants (Sophorolipid, Saponin, β-cyclodextrin and Polyaspartic acid) on phytoremediation of Cd- and Pb- contaminated soil by Brassica Juncea was investigated in this work. Especially, the effect of the kind and the adding dosage of the chelants was studied during the plant growth. Plants were grown in an environmental control system. The biomass of the whole plant was weighed, and the concentration of Cd and Pb in shoot and root were determined using ICP-MS. Consequently, the following matters have been obtained: (1) All the chelants had the excellent stabilization of Cd and Pb in root. (2)The chelants resulted in a sharply biomass loss. (3) From bioconcenrtration factor, the chelants were more beneficial for the translocation of Pb than Cd, especially Saponin.
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