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Geochemical processes controlling mobilization of arsenic and Trace Elements in shallow aquifers in mining regions, Bolivian Altiplano
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering. (KTH-International Groundwater Arsenic Research Group)ORCID iD: 0000-0003-4350-9950
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2014 (English)In: One Century of the Discovery of Arsenicosis in Latin America (1914-2014): As 2014 - Proceedings of the 5th International Congress on Arsenic in the Environment, 2014, 239-241 p.Conference paper, Published paper (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
2014. 239-241 p.
Keyword [en]
Aquifers, Arsenic, Groundwater resources, Hydrochemistry, Hydrogeology, Lead, Water management, Bolivian Altiplano, Geochemical approaches, Geochemical process, Geothermal water, Mn concentrations, Shallow aquifers, Sulfide oxidation, Waterresource management, Process control
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:kth:diva-168854Scopus ID: 2-s2.0-84907359855ISBN: 9781138001411 (print)OAI: oai:DiVA.org:kth-168854DiVA: diva2:820826
Conference
5th International Congress on Arsenic in the Environment, As 2014, 11 May 2014 through 16 May 2014, Buenos Aires
Note

QC 20150612

Available from: 2015-06-12 Created: 2015-06-09 Last updated: 2015-06-12Bibliographically approved

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Bhattacharya, Prosun

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  • apa
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