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http://dx.doi.org/10.5806/AST.2008.21.2.143

Preparation and identification of U(IV) for the investigation of behaviors of uranium in a disposal repository  

Kim, Seung Soo (Korea Atomic Energy Research Institute)
Kang, Kwang Chul (Korea Atomic Energy Research Institute)
Kim, Jung Suck (Korea Atomic Energy Research Institute)
Jung, Euo Chang (Korea Atomic Energy Research Institute)
Baik, Min Hoon (Korea Atomic Energy Research Institute)
Publication Information
Analytical Science and Technology / v.21, no.2, 2008 , pp. 143-147 More about this Journal
Abstract
U(IV) ion, the valance state of uranium presumed at in a deep-depth disposal of a spent fuel, was prepared and separated from U(VI) ion. In order to prepare U(IV) ion, tests were performed by adding several reducing agents into a uranyl solution or by dissolution of uranium oxide in a mixed acid added with a reducing agent. The valance states of the uranium in the prepared solutions were identified by separating two ions with a Dowex AG 50W-X8 cation exchange resins and measuring the solutions using a laser-induced fluorescence spectroscopy. However, U(IV) and U(VI) were not separated by a Lichroprep Si60 exchange resin in the same separation condition of Pu(IV) and Pu(VI).
Keywords
uranium valance; separation; spectroscopy; chromatography;
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