A potentiometric detection technique for chelating agents after separation by capillary zone electrophoresis

被引：3

作者：

Buchberger W. ^{[1
]}

Aichhorn D. ^{[1
]}

Niessner G. ^{[1
]}

Haddad P.R. ^{[2
]}

Bogan D. ^{[2
]}

机构：

[1] Department of Analytical Chemistry, Johannes Kepler University

[2] Department of Chemistry, University of Tasmania, Hobart

来源：

Monatshefte für Chemie / Chemical Monthly | 1998年 / 129卷 / 8-9期

关键词：

Aminopolycarboxylic acids; Capillary electrophoresis; Chelating agents; Potentiometric detection;

D O I：

10.1007/PL00013488

中图分类号：

学科分类号：

摘要：

The combination of capillary zone electrophoresis with potentiometric detection has been investigated for the determination of chelating agents such as diethylenetriaminepentaacetic acid. The detector consists of a metallic copper electrode with a diameter of 100 μm arranged in an end-capillary configuration. The electrode potential depends on the concentration of copper ions at the electrode surface and therefore decreases when chelating agents pass the electrode. In combination with UV detection, both free ligands and metal complexes could be detected.

引用

页码：811 / 816

页数：5

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