Abstract
Formaldoxime forms highly coloured complexes (ϵ = 4000–18000) with manganese, cerium, vanadium, nickel and iron in alkaline media. On the basis of a study of reaction mechanisms and of the optimum conditions for the formation of the different complexes, new spectrophotometric methods are described for determination of cerium and iron, as well as improved methods for determination of manganese, nickel and vanadium. The use of formaldoxime for Mn, Ce and V is particularly beneficial in trace analysis and the methods suggested are specific.
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