Applicability of heavy-metal phytoextraction in United Arab Emirates: an investigation of candidate species

Alyazouri, Ayman, Jewsbury, Roger A., Tayim, Hassan, Humphreys, Paul and Al-Sayah, Mohammad H. (2013) Applicability of heavy-metal phytoextraction in United Arab Emirates: an investigation of candidate species. Soil and Sediment Contamination: An International Journal. ISSN 1549-7887

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Abstract

Phytoremediation of contaminated calcareous desert land in the United Arab Emirates has been
investigated. Soils from twelve northern UAE sites, suspected of metal contamination were acid extracted and analyzed by ICP-OES for Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn. Twenty two plants naturally growing at contaminated sites were sampled and analysed for their uptake of Co, Cr, Cu, Mn, Ni, Pb, and Zn and eight commercially available plants, grown under controlled conditions, were also studied for their
phytoextraction capabilities.

The concentration of available Cr was found to be 1300 ± 150 mg/kg in the soil of Ajman Industrial Zone and 80 ± 10 mg/kg of Pb was found at Bithna. Among the plants investigated, Portulaca oleracea and Iresine herbstii, showed potential for Cr(VI) and Pb(II) accumulation respectively with bioconcentration factors (BCF) greater than unity. Atriplex halimus accumulated Co(II), Cr(III) and Cu(II) each with a BCF > 1.

Item Type:	Article
Subjects:	Q Science > QD Chemistry Q Science > QE Geology Q Science > QK Botany
Schools:	School of Applied Sciences
Related URLs:	Author
Depositing User:	Paul Humphreys
Date Deposited:	07 Oct 2013 09:53
Last Modified:	07 Oct 2013 11:00
URI:	http://eprints.hud.ac.uk/id/eprint/18807

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