Uranium and arsenic dynamics in volcano-sedimentary basins – An exemplary study in North-Central Mexico

dc.contributor.authorBanning, Andre
dc.contributor.authorCardona, Antonio
dc.contributor.authorRüde, Thomas R.
dc.contributor.funderConsejo Nacional de Ciencia y Tecnologíaen
dc.contributor.funderDeutscher Akademischer Austauschdiensten
dc.contributor.funderRWTH Aachen Universityen
dc.date.accessioned2021-12-08T14:47:34Z
dc.date.available2021-12-08T14:47:34Z
dc.date.issued2012-01-11
dc.date.updated2021-11-23T15:27:20Z
dc.description.abstractUranium and As in deep groundwater of the volcano-sedimentary Villa de Reyes Graben around the city of San Luis Potosí in semi-arid North-Central Mexico (mean U: 7.6 μg L−1, max. 138 μg L−1; mean As: 11.4 μg L−1, max. 25.8 μg L−1) partly exhibit concentrations in excess of the WHO guideline values and thus endanger the quality of the most important drinking water source. To unravel the mechanisms for their enrichment in groundwater, the potential trace element sources, volcanic rocks and basin fill sediments, were characterized. A total of 131 solid and liquid samples were analyzed for major and trace element composition. The As/U hydrogeochemical signatures, their behavior during rock alteration and evidence from other major and trace element distributions, especially rare earth elements, strongly argue for dissolution of acid volcanic glass to be the dominating process of U and As release into groundwater. This natural baseline quality representing water–acid volcanic rock interaction is modified by additional trace element (preferentially As) mobilization from the sedimentary basin fill, representing a secondary source, in the course of decarbonatization of playa lake sediments and desorption from Fe-(hydr)oxide coated clastic material. The common behavior of both elements during magmatic differentiation and growing drift apart in sedimentary environments are important findings of this work. Comparison with recent findings in a similar environment suggests a common primary trace element source identification but significant differences in the evolution of As and U distribution. Geological and climatic similarity to numerous volcano-sedimentary basins makes the findings useful for water management purposes and transferable to other semi-arid regions facing challenges of geogenically impacted drinking water quality.en
dc.description.sponsorshipConsejo Nacional de Ciencia y Tecnología (Fondos Mixtos CONACyT-SLP (Grant FMSLP-2005-C01-10)); Deutscher Akademischer Austauschdienst (German Academic Exchange Service (DAAD) under Contract A/09/06320-511); RWTH Aachen University (Institute of Hydrogeology Guest Professorship)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBanning, A., Cardona, A. and Rüde, T. R. (2012) ‘Uranium and arsenic dynamics in volcano-sedimentary basins – An exemplary study in North-Central Mexico’, Applied Geochemistry, 27 (11), pp. 2160-2172. doi: 10.1016/j.apgeochem.2012.01.001en
dc.identifier.doi10.1016/j.apgeochem.2012.01.001en
dc.identifier.endpage2172en
dc.identifier.issn0883-2927
dc.identifier.issued11en
dc.identifier.journaltitleApplied Geochemistryen
dc.identifier.startpage2160en
dc.identifier.urihttps://hdl.handle.net/10468/12337
dc.identifier.volume27en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S0883292712000042
dc.rights© 2012 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 licenseen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectUraniumen
dc.subjectArsenicen
dc.subjectVolcanic rocksen
dc.subjectTrace element distributionen
dc.subjectMobilizationen
dc.subjectMexicoen
dc.titleUranium and arsenic dynamics in volcano-sedimentary basins – An exemplary study in North-Central Mexicoen
dc.typeArticle (peer-reviewed)en
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