Abstract
The formal oxidation potentials of the M(VI)/M(V), M(V)/M(IV), and M(IV)/M(III) couples for actinides from U to No and of the M(IV)/M(III) couples for some actinides in 1 M H+ or 1 M Na+ (pH ∼5–5.5) solutions containing K10P2W17O61 were calculated from the data on stability of complexes of f element ions with the unsaturated heteropolytungstate anion P2W17O 10−61 . In some cases, the previously accepted values were subjected to major revision, especially the potentials of the An(V)/An(IV) couples. Problems arising in measuring the potentials of the couples involving Np(III) and Pu(III) which react with the heteropolyanion to form a heteropoly blue are discussed. The potentials of some M(III)/M(II) couples are estimated.
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Original Russian Text © A.B. Yusov, V.P. Shilov, A.M. Fedoseev, 2007, published in Radiokhimiya, 2007, Vol. 49, No. 2, pp. 135–138.
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Yusov, A.B., Shilov, V.P. & Fedoseev, A.M. Formal oxidation potentials of actinide couples in K10P2W17O61 solutions. Radiochemistry 49, 152–155 (2007). https://doi.org/10.1134/S1066362207020099
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DOI: https://doi.org/10.1134/S1066362207020099