Sequential extraction and single-step cold-acid extraction: A feasibility study for use with freshwater-canal sedimentsCook, S. R. and Parker, A. (2006) Sequential extraction and single-step cold-acid extraction: A feasibility study for use with freshwater-canal sediments. Water Air and Soil Pollution, 170 (1-4). pp. 95-105. ISSN 0049-6979 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1007/s11270-006-2815-7 Abstract/SummaryThis investigation examines metal release from freshwater sediment using sequential extraction and single-step cold-acid leaching. The concentrations of Cd, Cr, Cu, Fe, Ni, Pb and Zn released using a standard 3-step sequential extraction (Rauret et al., 1999) are compared to those released using a 0.5 M HCl; leach. The results show that the three sediments behave in very different ways when subject to the same leaching experiments: the cold-acid extraction appears to remove higher relative concentrations of metals from the iron-rich sediment than from the other two sediments. Cold-acid extraction appears to be more effective at removing metals from sediments with crystalline iron oxides than the "reducible" step of the sequential extraction. The results show that a single-step acid leach can be just as effective as sequential extractions at removing metals from sediment and are a great deal less time-consuming.
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