Mineralogical study of arsenic-enriched aquifer sediments at Santiago del Estero, northwest Argentina

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Authors	ŠRÁČEK Ondřej NOVÁK Milan SULOVSKÝ Petr MARTIN Raul BUNDSCHUH Jochen BHATTACHARYA Prosun
Year of publication	2006
Type	Article in Proceedings
Conference	Natural Arsenic in Groundwaters of Latin America
MU Faculty or unit	Faculty of Science
Citation
Field	Geology and mineralogy
Keywords	arsenic; loess; pampa; Argentina;
Description	Sediments from aquifer contaminated by arsenic at Santiago del Estero, norhwest Argentina, were investigated using several mineralogical methods. Probable source of arsenic is volcanic glass in pampean loess. Ferric oxyhydroxides coatings are very limited and, thus, adsorption capacity for arsenic is low. Competition with other oxyanions further reduces arsenic adsorption.
Related projects:	Geological Processes and their Environmental Impact - Contact of the Variscides and Alpides