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On-line microwave-induced helium plasma atomic emission detection for capillary zone electrophoresis

✍ Scribed by Liu, Yan ;Lopez-Avila, Viorica

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
418 KB
Volume
16
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

We report a feasibility study on using a microwave‐induced helium plasma atomic emission detector (MIP‐AED) as an on‐line detector in capillary zone electrophoresis (CZE). To couple CZE to MIP‐AED, we used an ion exchange membrane capillary to connect the separation capillary to the interfacing capillary. The outlet end of the interfacing capillary was placed directly in the discharge tube of the MIP‐AED system. The electroosmotic flow generated in the separation capillary carried the analytes and the electrolyte buffer solution through the interfacing capillary into the MIP‐AED discharge tube where the analytes were detected. The performance of the CZE/MIP‐AED system was evaluated with trimethyltin chloride, dimethyltin dichloride, n‐propanol, and 2‐butanone. The preliminary results indicate that the MIP‐AED can be used in CZE to provide element‐specific detection for target analytes.

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## Abstract A simple isotachophoretic (ITP) preconcentration column for subsequent online capillary zone electrophoresis is described, and its use for enhancing detectability in capillary zone electrophoresis (CZE) is evaluated. Sample preconcentration using ITP is shown to enhance detectability in