Metal speciation in Jhanji River sediments

The chemical forms of Lead, Zinc, Chromium, Cobalt, Nickel and Copper have been determined using the fractionation scheme of Tessier et al. (1979) and Chao (1972) in the bed sediments of Jhanji River, Assam, India. Almost a similar trend throughout the stretch with no significant spatial variation h...

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Bibliographic Details
Published in:The Science of the total environment 1996-12, Vol.193 (1), p.1-12
Main Authors: Baruah, N.K., Kotoky, P., Bhattacharyya, K.G., Borah, G.C.
Format: Article
Language:English
Subjects:
assam
Biovailability
chrome
chromium
cinc
cobalt
cobalto
cobre
copper
cours d' eau
cromo
cuivre
cursos de agua
Freshwater
Heavy metal distribution
Jhanji sediments
lead
nickel
niquel
plomb
plomo
pollution des sediments
polucion de sedimentos
rivers
sediment
sediment pollution
sedimento
Speciation
zinc
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Summary:The chemical forms of Lead, Zinc, Chromium, Cobalt, Nickel and Copper have been determined using the fractionation scheme of Tessier et al. (1979) and Chao (1972) in the bed sediments of Jhanji River, Assam, India. Almost a similar trend throughout the stretch with no significant spatial variation has been observed in the present study. Significant association with the residual fraction (F5) and a scavenging action by the Fe-Mn oxide fraction (F3b) of the sediments were observed. Except copper, no significant association of other metals with the organic fraction (F4) was observed. Thus, they cannot be easily leached out and may pose less environmental risk. The sediment characteristics played a significant role in defining the chemical forms of the metals present in the sediments.
ISSN:0048-9697
1879-1026
DOI:10.1016/S0048-9697(96)05318-1