Title: Kinetic spectrophotometric determination of indium/gallium mixtures
Abstract: A kinetic method is presented for the determination of 0.5–5 μg ml−1 gallium based on its activating effect on the copper(II)-catalyzed oxidation of 4,4′-dihydroxybenzophenone thiosemicarbazone by hydrogen peroxide. The reaction is monitored spectrophotometrically at 415 nm. Two sets of reaction conditions are established; one for the direct determination of gallium, and another, in which indium affects the gallium response, for determination of indium. Mixtures of these cations can be determined at μg ml−1 levels and in gallium/indium ratios from 7.5:1 to 1:1.6, with an accuracy and precision of ca. 4.5%.
Publication Year: 1987
Publication Date: 1987-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 7
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