2017 to 2020
Understanding Uranium and Arsenic sources and mobility in deep groundwater flow systems from the Altiplano Mexicano (San Luis Potosi and Zacatecas states)
On the Mexican Altiplano with its semi-arid to arid climate and due to its geological condition with igneous rocks and related sediments, which have elevated concentrations of uranium and arsenic, these two trace elements show a relationship, despite their generally different redox properties and transport behavior. Therefore, these elements can be mobilized into groundwater, which is the main source for water supply of the population in these areas. There is a need to understand the processes of geogenic enrichment of uranium and arsenic in the sediments and their release to the groundwater. Therefore, the objective of the study is to understand processes controlling uranium and arsenic mobility in groundwater based on geochemical, hydrogeochemical and mineralogical characterization. Also to quantitatively support, the conceptual model of the transport of uranium and arsenic in the Calera and Villa de Reyes basins.