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

被引：1
|
作者：
Buchberger, W [1 ]
Aichhorn, D
Niessner, G
Haddad, PR
Bogan, D
机构：
[1] Johannes Kepler Univ, Dept Analyt Chem, A-4040 Linz, Austria
[2] Univ Tasmania, Dept Chem, Hobart, Tas 7001, Australia
来源：
MONATSHEFTE FUR CHEMIE | 1998年 / 129卷 / 8-9期
关键词：
capillary electrophoresis; potentiometric detection; chelating agents; aminopoly-carboxylic acids;
D O I：
10.1007/s007060050103
中图分类号：
O6 [化学];
学科分类号：
0703 ;
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 mu m 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
收藏
页码：811 / 816
页数：6
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