Abstract
Forms of occurrence of polymeric Pu(IV) in simulated groundwater (SGW) were studied spectrophotometrically and by the method of centrifugal ultrafiltration through filtering inserts permeable to polymeric Pu species with different molecular weights. The dependences of the fractions of definite Pu(IV) forms on the total Pu content in the solution were found. The possibility of formation of Pu(IV) quasipolymeric structures in aqueous solutions was considered in relation to the problem of the transfer of radioactive contaminants with underground water. Equilibrium distribution of Pu(IV) polymers depending on the total Pu(IV) concentration in the solution was analyzed theoretically. From the experimental data obtained, the parameter allowing determination of the weight distribution of the polymeric particles in relation to the total Pu(IV) concentration was theoretically calculated, and their equilibrium distributions depending on the total Pu(IV) concentration were found.
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Original Russian Text © Yu.M. Kulyako, V.I. Mal’kovskii, T.I. Trofimov, B.F. Myasoedov, Ai Fujiwara, O. Tochiyama, 2008, published in Radiokhimiya, 2008, Vol. 50, No. 6, pp. 518–523.
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Kulyako, Y.M., Mal’kovskii, V.I., Trofimov, T.I. et al. Formation of polymeric Pu(IV) hydroxide structures in aqueous solutions. Radiochemistry 50, 594–600 (2008). https://doi.org/10.1134/S1066362208060027
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DOI: https://doi.org/10.1134/S1066362208060027