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Título

Estimating the extractability of potentially toxic metals in urban soils: a comparison of several extracting solutions.

AutorMadrid Díaz, Fernando ; Reinoso, R.; Florido Fernández, M.C.; Díaz Barrientos, Encarnación ; Ajmone-Marsan, F.; Davidson, C.M.; Madrid, Luis
Palabras claveSoil metals
Urban soils
Metal extraction
Sequential extraction
Fecha de publicación9-sep-2006
EditorElsevier
CitaciónEnvironmental Pollution 147:713-722 (2007)
ResumenMetals released by the extraction with aqua regia, EDTA, dilute HCl and sequential extraction (SE) by the BCR protocol were studied in urban soils of Sevilla, Torino, and Glasgow. By multivariate analysis, the amounts of Cu, Pb and Zn liberated by any method were statistically associated with one another, whereas other metals were not. The mean amounts of all metals extracted by HCl and by SE were well correlated, but SE was clearly underestimated by HCl. Individual data for Cu, Pb and Zn by both methods were correlated only if each city was considered separately. Other metals gave poorer relationships. Similar conclusions were reached comparing EDTA and HCl, with much lower values for EDTA. Dilute HCl extraction cannot thus be recommended for general use as alternative to BCR SE in urban soils.
Versión del editorhttp://www.sciencedirect.com/science/article/B6VB5-4M51FMB-6/2/4e64d78ff0349c620b7470a29ae26e9c
URIhttp://hdl.handle.net/10261/22434
DOI10.1016/j.envpol.2006.09.005
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