Applicability of capillary zone electrophoresis to study metal complexation in solution

The suitability of capillary zone electrophoresis for the determination of stability constants of metal complexes was investigated. Three variants were tested viz., the frontal analysis, the Hummel-Dreyer method and the vacancy peak method, in the step-wise complexation between copper(II) and 1,10-p...

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Published inAnalytica chimica acta Vol. 294; no. 2; pp. 155 - 163
Main Authors Erim, F.B., Boelens, H.F.M., Kraak, J.C.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 19.08.1994
Elsevier
Subjects
Analytical chemistry
Capillary zone electrophoresis
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Metal complexes
Neutral ligands
Other chromatographic methods
Stability constants
Stability constants
Capillary zone electrophoresis
Metal complexes
Neutral ligands
Capillary column
Zone electrophoresis
Investigation method
Nitrogen heterocycle
Organic ligand
Metal complex
Stability constant
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Summary:The suitability of capillary zone electrophoresis for the determination of stability constants of metal complexes was investigated. Three variants were tested viz., the frontal analysis, the Hummel-Dreyer method and the vacancy peak method, in the step-wise complexation between copper(II) and 1,10-phenanthroline as well as 2,2′-bipyridyl. The investigation reveals that CZE has attractive features for the quantitative study of complex formation with neutral ligands. However, the full exploitation requires more sensitive detection systems and application of an automated CZE system.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(94)80190-8