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Published on: June 21, 2015
Optimization of the arsenazo-III method for the determination of uranium in water and plant samples
Loïc Jauberty1, Nicolas Drogat, Jean-Louis Decossas
1LCSN, EA 1069, 123 Avenue Albert Thomas, 87060 Limoges, France; Pe@rL, ESTER Technopôle, 20 rue Atlantis, 87068 Limoges cedex, France.
Abstract:
This work reports a reliable, fast and optimized photometric technique based on the specific chemical complexation of uranyl ion with arsenazo-III. In the case of solid samples (plant samples), for which mineralization under acidic and oxidative conditions was used, addition of ascorbic acid led to stabilization of the arsenazo-uranyl complex over time. The results, in total agreement with data obtained from α and γ spectrometries, demonstrate that the present technique is able to precisely quantify uranium in water as well as in plant samples, within the μg/L and mg/g ranges respectively.
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