Tracing U mobility in deep groundwater using Ra isotopes
Krall, L. ; Auque, L. (Universidad de Zaragoza) ; Tullborg, E.L. ; Suksi, J. ; Trezzi, G. ; Garcia-Orellana, J. ; Andersson, P. ; Porcelli, D.
Resumen: The mobility of natural U is compared among four boreholes in a fractured granite using Ra isotopes and geochemical modelling. Rn-222/Ra-226 activity ratios (ARs) spanning an order of magnitude underline differences in reactive surface area. (Ra-224/Ra-228)(ARs) up to 9 indicate recent changes in hydrogeochemistry, and (Ra-226/Ra-228)(ARs) 0.6-30 indicate variable deposition of U. Dissolved U is related to dissolution of a solid U(VI) phase by groundwater with HCO3- > 20 mg.L-1. U reduction is hindered by Ca2UO2(CO3)(3)(0).
Idioma: Inglés
DOI: 10.1016/j.proeps.2016.12.122
Año: 2017
Publicado en: Procedia Earth and Planetary Sciences 17 (2017), 484-487
ISSN: 1878-5220
Financiación: info:eu-repo/grantAgreement/EC/FP7/290336/EU/Metal Transport in the Environment/MetTrans
Tipo y forma: Article (Published version)
Área (Departamento): Área Petrología y Geoquímica (Dpto. Ciencias de la Tierra)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material.
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Idioma: Inglés
DOI: 10.1016/j.proeps.2016.12.122
Año: 2017
Publicado en: Procedia Earth and Planetary Sciences 17 (2017), 484-487
ISSN: 1878-5220
Financiación: info:eu-repo/grantAgreement/EC/FP7/290336/EU/Metal Transport in the Environment/MetTrans
Tipo y forma: Article (Published version)
Área (Departamento): Área Petrología y Geoquímica (Dpto. Ciencias de la Tierra)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material. Exportado de SIDERAL (2023-01-11-10:04:57)
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Record created 2018-05-30, last modified 2023-01-11