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Journal of Environmental BiologypISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP |
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Abstract - Issue Jul 2010, 31 (4) BackAccumulation and translocation of
heavy metals in soil and plants from fly ash contaminated area Ramesh Singh1, D.P. Singh2,
Narendra Kumar2, S.K. Bhargava1
and S.C. Barman*1 1Environmental Monitoring Section,
Indian Institute of Toxicology Research (IITR), 2Deptartment of Environmental Sciences, (Received: 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. Key words: Accumulation, Fly ash, Heavy metals, Accumulator species, Enrichment
factor, Translocation factor ?????? ?PDF of full length paper is available online Copyright ? 2010 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any
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completely with the author(s). |