The use of redox reactions in the analysis of dyes and dye intermediates: XVII. The influence of proton donors on direct current polarographic behavior of some water-insoluble azo pigments in acetonitrile |
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| Authors: | J Barek A Berka V Borek |
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| Institution: | Department of Analytical Chemistry, Charles University, 128 40 Prague 2, Czechoslovakia |
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| Abstract: | The influence of water and perchloric acid on the polarographic behavior of some water-insoluble azo pigments in acetonitrile has been investigated. The conditions were defined for the polarographic determination of the test substances in a mixed acetonitrile-water medium. The presence of strong acids prevents analytical use of these reactions. |
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