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 |
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Pages (from-to) | 95-104 |
Journal | Journal of Chromatography, A |
Volume | 470 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1989 |