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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 Haddad
The 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

Electrophoresis

Volume

27

Pagination

672-676

ISSN

0173-0835

Department/School

School of Natural Sciences

Publisher

Wiley

Place of publication

Weinheim

Rights statement

© 2006 WILEY-VCH

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the chemical sciences

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