Determination of Vanadium(V) and Vanadium(IV) in Bismuth- and Copper-Containing Compounds by Controlled-Potential Coulometry

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It was shown that vanadium(V) and vanadium(IV) can be determined at a large Pt electrode in H2SO4 solutions in the presence of copper and bismuth by controlled-potential coulometry with RSD no worse than 0.2%. Compounds of the composition Bi4V1.8Cu0.2O10.7 – x were analyzed.

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