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Título

Extraction of soil metals by delute hydrochloric acid; an alternative to sequential extration for estimation of available metal contents in urban soils?

AutorRuiz-Cortés, Eduardo CSIC; Reinoso, Rocío CSIC; Díaz Barrientos, Encarnación CSIC; Madrid, Luis CSIC
Palabras claveToxic metals
Soils
Pollution
Fecha de publicación2003
EditorUniversidad de La Coruña
CitaciónVIII International symposium on analytical methodology in the environmental field: 193-194 (2003)
ResumenAlthough the total contents of toxic metals in soils are generally used for estimation of the degree of pollution of a given site, on1y a fraction of the metal content is likely to have a significant role in environmental processes. Also, in many cases of moderate pollution a decrease in metal availabi1ity in soil may be feasib1e using relatively cheap techniques, whi1e a decrease in the total contents requires much more difficult treatments and their application is often questionable. Therefore, obtaining a good estimate of metal availability is of the utmost importance in soils with re1atively high total contents. Extraction with EDTA is usually considered an estimate of metal avai1abi1ity in soi1s (Quevauviller et al., 1997). The technique proposed by the European IRMM for sequentia1 extraction of meta1s in soi1s distinguishes 3 fractions (Rauret et al., 1999), whi1e those metal forms not inc1uded in them are considered of no environmenta1 significance. Sutherland (2002) proposed a simp1er extraction with 0.05 M HCl as a good ana1ytica1 assessment of metal pollution.
Descripción2 páginas, 1 figura y 4 referencias. Poster contritbutions- SO-55.4 en el VIII International symposium on analytical methodology in the environmental field. XIII Reunión de la Sociedad española de química analítica, VIII ISAMEF/SEQA 2003. University of A Coruña October 21-24, 2003.
URIhttp://hdl.handle.net/10261/67386
ISBN84-9749-085-1
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