Heavy metal speciation of soil and Calotropis procera from thermal power plant area

摘要

Present study was conducted near to a super thermal power plant for the speciation of heavy metals/metalloidscontamination of soil and estimation of concentration factor for plant parts (CFPP) of Calotropis procera. Theheavy metals selected for speciation in soil and plant parts were Pb, Fe, Cr, Cd, Zn, Ni, V, Co, Mo and Cu andwere estimated using AAS-7000(Shimadzu). Reason for selecting the present plant was its abundance in thearea vicinity of the power plant. Presence of these heavy metals/metalloids can be attributed to the coal usedfor combustion from which they are volatised and after condensation are associated to the fly ass. The plantCalotropis procera growing in the area accumulates these metals/metalloids do a significant extent and thuscan be used for the plantation in the fly ash dykes so as to minimise the contamination of soil and ambient airwith these metals/metalloids.