| Literature DB >> 14568717 |
M Jesús Gismera1, Javier Lacal, Pilar da Silva, Rosario García, M Teresa Sevilla, Jesús R Procopio.
Abstract
The extraction kinetic of trace metals (Cd, Cu, Pb, and Zn) in river sediments by four extraction agents was studied. As extractants ammonium acetate, acetic acid, hydroxylamine and EDTA solutions were assayed. These reagents can leach the metals more or less selectively from several metal compartments of sediments. The metal leaching kinetic model permits classification of the metal species in labile and moderately-labile ones. The combination of two or more non specific reagents permits a high characterisation of metal distribution and leachability. The results obtained with this model in four river sediments were compared with data obtained by the SM&T sequential extraction procedure, in order to characterise the chemical nature of leached metal.Entities:
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Year: 2004 PMID： 14568717 DOI： 10.1016/j.envpol.2003.08.004
Source DB: PubMed Journal: Environ Pollut ISSN： 0269-7491 Impact factor: 8.071