Pb-phytoextraction by maize in a Pb-EDTA treated Oxisol

Abstract

One of the most viable strategies to restore metal contaminated soils is the introduction of plants specialized in their accumulation or able to tolerate very high metal concentrations. This research evaluated: i. the maize as a Pb-accumulator plant; ii. the effects of EDTA-chelating agent for Pb-uptake by maize; iii. amending effect of EDTA on the soil Pb-availability using different extracts. ) and without EDTA. Lead concentrations were determined in maize plant shoots. Soil available Pb was obtained using D…