Polarographic and voltammetric determination of triazine-based reactive azo dyes with 4-carboxypyridyl and 1,4-diazabicyclo[2,2,2]octanyl (DABCO) leaving groups

Arnold G. Fogg, M. V.B. Zanoni, A. Rahim H.M. Yusoff, Rahmalan Ahmad, Jiři Barek, Jiři Zima

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Abstract

Direct current and differential pulse polarograms of reactive triazine- based azo dyes containing 4-carboxypyridyl and 1,4-diazabicyclo[2,2,2]octanyl (DABCO) leaving groups show one wave or peak corresponding to reduction of the azo group and other waves or peaks at more negative potentials corresponding to the reduction of reactive groups. Optimum conditions were found for polarographic and voltammetric determination at submicromolar concentrations of the test dyes based on azo group reduction. The peaks corresponding to the reduction of the reactive group can be used for monitoring the hydrolysis of the test dyes.

Original languageEnglish
Pages (from-to)235-240
Number of pages6
JournalAnalytica Chimica Acta
Volume362
Issue number2-3
DOIs
Publication statusPublished - 4 May 1998
Externally publishedYes

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Keywords

  • Cathodic stripping voltammetry
  • Hydrolysis
  • Leaving groups
  • Polarography
  • Reactive dyes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Environmental Chemistry
  • Biochemistry
  • Spectroscopy

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