Remediation of As-contaminated site by growing Brassica juncea plants

The capacity of Brassica juncea plants to remediate arsenic-contaminated soil was studied. Thiosulphate and potassium hydrogen phosphate were added to the soil to promote the release of As from soil surfaces, improve the phytoavailability and thus the plant absorption. The addition of thiosulphate and phosphate favoured the growth of the plants and increased the accumulation of arsenic in root and shoots. Assisted phytoextraction is a promising technology for the remediation of As-conaminated sites.