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Variation of zeta-potential with temperature in fused-silica capillaries used for capillary electrophoresis
journal contribution
posted on 2023-05-16, 18:46 authored by Evenhuis, CJ, Rosanne Guijt, Miroslav MackaMiroslav Macka, Marriott, PJ, Paul HaddadPaul HaddadThe temperature variation of electroosmotic mobility corrected for the effects of Joule heating (μEOF0) was employed to investigate the variation of the zeta-potential (ζ) with temperature in fused-silica capillaries. Experimentally determined values for ζ increased at 0.39% per °C, a rate that is about four to five times smaller than reported previously. Experimentally determined values of ζ were directly proportional to the absolute temperature although values were also influenced slightly by changes to the dielectric constant. It was found that the effective charge density at the inner surface of the capillary was independent of temperature.
History
Publication title
ElectrophoresisVolume
27Pagination
672-676ISSN
0173-0835Department/School
School of Natural SciencesPublisher
WileyPlace of publication
WeinheimRights statement
© 2006 WILEY-VCHRepository Status
- Restricted