Abstract
The reduction of Pu(VIII) with water in ozonized 15 and 6 MNaOH solutions after termination of the ozone bubbling was studied by spectrophotometry. Kinetic curves reflecting the whole set of processes that occur in NaOH solutions of different concentrations were obtained. Calculations performed with the experimental curves made it possible to construct the kinetic curves describing the behavior of plutonium in higher oxidation states in solution and to obtain the individual absorption spectra of Pu(VII) and Pu(VIII). The processes occurring in ozonized solutions of Pu(VI) in 6 and 15 M NaOH after termination of the ozone bubbling were found to occur by different mechanisms, yielding in 4 days Pu(VI) and Pu(V), respectively.
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Original Russian Text © M.V. Nikonov, B.F. Myasoedov, 2014, published in Radiokhimiya, 2014, Vol. 56, No. 3, pp. 193–199.
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Nikonov, M.V., Myasoedov, B.F. A spectrophotometric study of the reduction of Pu(VIII) and Pu(VII) in alkaline solutions. Radiochemistry 56, 227–234 (2014). https://doi.org/10.1134/S1066362214030011
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DOI: https://doi.org/10.1134/S1066362214030011