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State of Uranovanadates of d-Transition Elements in Heterogeneous Aqueous-Salt Systems

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Abstract

The state of uranovanadates AII(VUO6)2·nH2O (AII = Mn, Fe, Co, Ni, Cu, Zn, Cd) in aqueous solutions in a wide range of solution acidity was studied. The solubility of AII(VUO6)2·nH2O and the acid–base intervals of the existence of compounds in aqueous solutions were determined, and the conversion products were identified. From the data obtained, the Gibbs functions of formation of uranovanadates and the solubility curves of the compounds were calculated, and the speciation diagrams of U(VI) and V(V) in aqueous solutions and equilibrium solid phases were constructed.

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Funding

The study was financially supported by the Ministry of Education and Science of the Russian Federation (project no. 4.5706.2017/BCh within the framework of the base part of the government assignment).

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Correspondence to O. V. Nipruk.

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The authors declare that they have no conflict of interest.

Russian Text © The Author(s), 2019, published in Radiokhimiya, 2019, Vol. 61, No. 5, pp. 368–375.

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Nipruk, O.V., Chernorukov, N.G., Chaplieva, K.A. et al. State of Uranovanadates of d-Transition Elements in Heterogeneous Aqueous-Salt Systems. Radiochemistry 61, 520–528 (2019). https://doi.org/10.1134/S1066362219050023

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  • DOI: https://doi.org/10.1134/S1066362219050023

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