Enhancing the Phytoextraction of Cd, Cu, Pb, and Zn by Portulaca oleracea in a Heavily Contaminated Soil Using Low Molecular Weight Organic Substances: Is Phytoremediation Viable?
Georgios Thalassinos,
Efi Levizou,
Jörg Rinklebe
et al.
Abstract:Phytoremediation can be accelerated if contaminated soils are amended with releasing agents. We tested four such materials, citric acid (CA), EDTA, oxalic acid (OA), and tartaric acid (TA) at two doses, 20 and 40 mmol kg−1, amended in a pot experiment to a heavily contaminated soil cultivated with purslane (Portulaca oleracea). We found that Cd extracted with DTPA remained unchanged in all treatments compared to the control except for the treatment of added EDTA at 40 mmol kg−1 (“EDTA-40”). Similar was the cas… Show more
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