Uranium speciation in groundwaters from Parana basin, Brazil
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A A Balkema Publishers
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Abstract
This paper describes the results of a regional study involving the sampling of 60 pumped tubular wells drilled at the Parana sedimentary basin, Brazil, which was carried out with the purpose of evaluating the U speciation in the Botucatu-Piramboia aquifer. Uranium proved to be intensively dissolved even under the enhanced reducing conditions occurring at the most confined zones of the aquifer, and Eh-pH diagrams were utilized to evaluate the influence of temperature and pressure on the migration of the U-species within the aquifer.
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English
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Geochemistry of the Earth's Surface. Leiden: A A Balkema Publishers, p. 433-436, 1999.
