Geochemical processes controlling mobilization of arsenic and Trace Elements in shallow aquifers in mining regions, Bolivian Altiplano

O. E. Ramos Ramos, I. Quino, J. Quintanilla, P. Bhattacharya, J. Bundschuh

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

1 Cita (Scopus)

Resumen

A geochemical approach was applied to understand the factors controlling the mobilization of As and trace elements (TEs) in these mining areas. A total of 30 samples (wells and geothermal water) were collected during the rainy season (2009). As, Cd and Mn concentrations exceed WHO drinking guidelines in some groundwater samples, but Cu, Ni, Pb and Zn do not. Factor analysis of the groundwater chemical data suggests the following geochemical processes: i) plagioclase weathering, ii) dissolution of gypsum and halite, iii) trace element mobilization at acidic pH, iv) sulfide oxidation, and v) release of As following competition with phosphate and bicarbonate for adsorption sites. The As and TEs mobilized in these regions could affect the local water sources, which is a prevalent concern with respect to water resource management in this semi-arid Altiplano region.

Idioma originalInglés
Título de la publicación alojadaOne Century of the Discovery of Arsenicosis in Latin America (1914-2014)
Subtítulo de la publicación alojadaAs 2014 - Proceedings of the 5th International Congress on Arsenic in the Environment
EditorialCRC Press/Balkema
Páginas239-241
Número de páginas3
ISBN (versión impresa)9781138001411
DOI
EstadoPublicada - 2014
Evento5th International Congress on Arsenic in the Environment, As 2014 - Buenos Aires, Argentina
Duración: 11 may. 201416 may. 2014

Serie de la publicación

NombreOne Century of the Discovery of Arsenicosis in Latin America (1914-2014): As 2014 - Proceedings of the 5th International Congress on Arsenic in the Environment

Conferencia

Conferencia5th International Congress on Arsenic in the Environment, As 2014
País/TerritorioArgentina
CiudadBuenos Aires
Período11/05/1416/05/14

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