Redox potentials of tungsten and its alloying partners-fundamentals of tungsten determination by redox titration.
The fundamentals of tungsten determination by redox titration in hydrochloric acid medium are describe. Conditional redox potentials are given for W, Cr, V, Fe, Ti, Mo, Cu and Sn as a function of HCl concentration. The basic experimental conditions and the difference in conditional potentials required for consecutive titrations are discussed. Any mixture of tungsten with other metals can be analysed without separation if it does not contain both Cr and Ti or both Mo and V.
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Anorganisch-chemisches Institut der Universität, D-4400 Münster, BRD.