Abstract

The influence of various factors on the completeness of transfer of crystalline PuO2 into solution by fusion with NaHSO4, followed by dissolution of the fusion cake in 1 M HClO4, was studied. The process parameters such as temperature, PuO2 to NaHSO4 weight ratio, and fusion time were optimized. The completeness of the PuO2 dissolution under the chosen conditions was proved, and the trueness of the procedure for coulometric titration of Pu(VI) with electrochemically generated Fe(II) ions was evaluated.

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