Modified methods for off- and on-line determination of electroosmosis in capillary electrophoretic separations

A.A.A.M. vd Goor; B.J. Wanders; F.M. Everaerts

doi:10.1016/S0021-9673%2800%2994203-1

Modified methods for off- and on-line determination of electroosmosis in capillary electrophoretic separations

A.A.A.M. vd Goor, B.J. Wanders, F.M. Everaerts

Chemical Engineering and Chemistry

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Abstract

Two modified methods for measuring the ¿-potential and electroosmotic flow in capillaries for electrophoretic or electrochrmatographic separations are discussed. Streaming potential measurements with computer control and data acquisition can be used off-line for rapid screening of the behaviour of capillaries. To test the equipment, the variation of the ¿-potential with pH was performed and the characteristics of the system are discussed. Weighing measurements were performed on-line. The variation of the measurements with increased electric field strength are shown. For both methods the reproducibility and the accuracy are discussed.

Original language	English
Pages (from-to)	95-104
Journal	Journal of Chromatography, A
Volume	470
Issue number	1
DOIs	https://doi.org/10.1016/S0021-9673%2800%2994203-1 https://doi.org/10.1016/S0021-9673(00)94203-1
Publication status	Published - 1989

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abstract = "Two modified methods for measuring the ¿-potential and electroosmotic flow in capillaries for electrophoretic or electrochrmatographic separations are discussed. Streaming potential measurements with computer control and data acquisition can be used off-line for rapid screening of the behaviour of capillaries. To test the equipment, the variation of the ¿-potential with pH was performed and the characteristics of the system are discussed. Weighing measurements were performed on-line. The variation of the measurements with increased electric field strength are shown. For both methods the reproducibility and the accuracy are discussed.",

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DO - 10.1016/S0021-9673%2800%2994203-1

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