Geochemical processes controlling mobilization of arsenic and trace elements in shallow aquifers in mining regions, Bolivian Altiplano
Paper
Ramos Ramos, O. E., Quino, I., Quintanilla, J., Bhattacharya, P. and Bundschuh, J.. 2014. "Geochemical processes controlling mobilization of arsenic and trace elements in shallow aquifers in mining regions, Bolivian Altiplano." Litter, Marta I., Quici, Natalia and Meichtry, J. Martin (ed.) 5th International Congress on Arsenic in the Environment (AS 2014): One Century of the Discovery of Arsenicosis in Latin America (1914-2014). Buenos Aires, Argentina 11 - 16 May 2014 Leiden, Netherlands.
| Paper/Presentation Title | Geochemical processes controlling mobilization of arsenic and trace elements in shallow aquifers in mining regions, Bolivian Altiplano |
|---|---|
| Presentation Type | Paper |
| Authors | Ramos Ramos, O. E. (Author), Quino, I. (Author), Quintanilla, J. (Author), Bhattacharya, P. (Author) and Bundschuh, J. (Author) |
| Editors | Litter, Marta I., Quici, Natalia and Meichtry, J. Martin |
| Journal or Proceedings Title | Proceedings of the 5th International Congress on Arsenic in the Environment (AS 2014) |
| Number of Pages | 3 |
| Year | 2014 |
| Place of Publication | Leiden, Netherlands |
| ISBN | 9781138001411 |
| 9781315778884 | |
| Conference/Event | 5th International Congress on Arsenic in the Environment (AS 2014): One Century of the Discovery of Arsenicosis in Latin America (1914-2014) |
| Event Details | 5th International Congress on Arsenic in the Environment (AS 2014): One Century of the Discovery of Arsenicosis in Latin America (1914-2014) Parent International Congress on Arsenic in the Environment (AS) Event Date 11 to end of 16 May 2014 Event Location Buenos Aires, Argentina |
| Abstract | 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) sulphide 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. |
| Keywords | Aquifers; Arsenic; Groundwater resources; Hydrochemistry; Hydrogeology; Lead; Water management; Bolivian Altiplano; Geochemical approaches; Geochemical process; Geothermal water; Mn concentrations; Shallow aquifers; Sulphide oxidation; Waterresource management |
| ANZSRC Field of Research 2020 | 370799. Hydrology not elsewhere classified |
| 400411. Water treatment processes | |
| 370104. Atmospheric composition, chemistry and processes | |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | Higher University of San Andreas, Bolivia |
| KTH Royal Institute of Technology, Sweden | |
| Institution of Origin | University of Southern Queensland |
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