Accumulation and translocation of heavy metals in soil and plants from fly ash contaminated area.
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Date
2010-07
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Abstract
The present investigation deals with the accumulation of heavy metals in fields contaminated with fly ash from a thermal power
plant and subsequent uptake in different parts of naturally grown plants. Results revealed that in the contaminated site, the mean level of
all the metals (Cd, Zn, Cr, Pb, Cu, Ni, Mn and Fe) in soil and different parts (root and shoots) of plant species were found to be significantly
(p<0.01) higher than the uncontaminated site. The enrichment factor (EF) of these metals in contaminated soil was found to be in the
sequence of Cd (2.33) > Fe (1.88) > Ni (1.58) > Pb (1.42) > Zn (1.31) > Mn (1.27) > Cr (1.11) > Cu (1.10). Whereas, enrichment factor of
metals in root and shoot parts, were found to be in the order of Cd (7.56) > Fe (4.75) > Zn (2.79) > Ni (2.22) > Cu (1.69) > Mn (1.53) > Pb
(1.31) > Cr (1.02) and Cd (6.06) ~ Fe (6.06) > Zn (2.65) > Ni (2.57) > Mn (2.19) > Cu (1.58) > Pb (1.37) > Cr (1.01) respectively. In
contaminated site, translocation factor (TF) of metals from root to shoot was found to be in the order of Mn (1.38) > Fe (1.27) > Pb (1.03)
> Ni (0.94) > Zn (0.85) > Cd (0.82) > Cr (0.73) and that of the metals Cd with Cr, Cu, Mn, Fe; Cr with Pb, Mn, Fe and Pb with Fe were
found to be significantly correlated. The present findings provide us a clue for the selection of plant species, which show natural resistance
against toxic metals and are efficient metal accumulators.
Description
Keywords
Accumulation, Fly ash, Heavy metals, Accumulator species, Enrichment factor, Translocation factor
Citation
Singh Ramesh, Singh D P, Kumar Narendra, Bhargava S K, Barman S C. Accumulation and translocation of heavy metals in soil and plants from fly ash contaminated area. Journal of Environmental Biology. 2010 Jul; 31(4): 421-430.