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

被引:28
作者
Fogg, AG
Zanoni, MVB [1 ]
Yusoff, ARHM
Ahmad, R
Barek, J
Zima, J
机构
[1] Loughborough Univ Technol, Dept Chem, Loughborough LE11 3TU, Leics, England
[2] Univ Teknol Malaysia, Dept Chem, Johor Bahru 80990, Malaysia
[3] Charles Univ, UNESCO Lab Environm Electrochem, Dept Analyt Chem, Prague 12840 2, Czech Republic
基金
英国生物技术与生命科学研究理事会; 巴西圣保罗研究基金会;
关键词
polarography; cathodic stripping voltammetry; reactive dyes; leaving groups; hydrolysis;
D O I
10.1016/S0003-2670(98)00056-7
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
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. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:235 / 240
页数:6
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