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Updated: Jul 10, 2026

Capillary Electrophoresis Separation of Monoclonal Antibody Isoforms Using a Neutral Capillary
Published on: January 16, 2017
Chiral separations by open tubular capillary electrokinetic chromatography
J J Pesek1, M T Matyska, S Menezes
1Department of Chemistry, San Jose State University, CA 95192, USA.
Abstract:
The inner walls of 50 microns fused-silica capillaries are etched by ammonium hydrogendifluoride and then modified by the silanization/hydrosilation method with a chiral selector. Three different types of selectors were evaluated: lactone, beta-cyclodextrin and naphthylethylamine. Each of the bonded chiral stationary phases provided at least partial separation for one type of racemic solute. These results confirm that bonded organic moieties on the etched inner wall of a capillary can provided sufficient solute-bonded phase interactions to influence the retention of molecules driven through a capillary by electroosmosis or a combination of electroosmosis and electrophoretic mobility.
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