Formas geoquímicas de metales pesados en sedimentos del Río Matanza y principales afluentes

• Autores: Alicia Rendina, Laura de Cabo, Silvana Arreghini, A. Iorio
• Localización: Revista del Museo Argentino de Ciencias Naturales, ISSN-e 1853-0400, ISSN 1514-5158, Vol. 3, Nº. 1, 2001, págs. 33-39
• Idioma: español
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• Resumen

  • Geochemical forms of heavy metals in sediments from the Matanza River and its main affluents. Sequential fractionation was applied to partition heavy metals in river sediments taken from the Matanza-Riachuelo basin. Although there was observed a considerable variation among the heavy metals in the proportion of various fractions, Pb showed a similar distribution pattern between the four sampling sites. The organic matter/sulfides fractions of this metal strongly dominated over the other fractions. The speciation of Cu showed a relative high percentage of carbonates and organic mater/sulfides fractions. Zinc showed a high proportion of Fe-Mn oxides. Cadmium was only detected in Cañuelas stream sediments and existed in the exchangeable and carbonates fraction showing a high potential mobility of this element.