Comparison of AOT decane water-in-oil and oil-in-water microemulsions as media for capillary electrophoresis

Citation
Ca. Fung-kee-fung et S. Post, Comparison of AOT decane water-in-oil and oil-in-water microemulsions as media for capillary electrophoresis, J LIQ CHR R, 24(8), 2001, pp. 1133-1151
Citations number
43
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry & Analysis","Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES
ISSN journal
1082-6076 → ACNP
Volume
24
Issue
8
Year of publication
2001
Pages
1133 - 1151
Database
ISI
SICI code
1082-6076(2001)24:8<1133:COADWA>2.0.ZU;2-6
Abstract
This report details the comparison of AOT-decane oil-in-water and water-in- oil microemulsions as media for capillary electrophoresis. The microemulsio n composition was varied to produce clear, conductive solutions. Clear micr oemulsions were obtained for 20% water-in-oil microemulsions and 10% oil-in -water microemulsions. The behavior of the microemulsions under conditions of the capillary electrophoresis experiment showed that the charge carrier Tetraethylammonium salt (TEA(-)) was needed to sustain a stable current. It was found that the migration of species in both water-in-oil and oil-in-wa ter microemulsions is based on association with the TEA(+). Several factors that could affect the migration of solutes in these media w ere studied. These include the composition of the microemulsion, the applie d voltage, the temperature, and the pH of the aqueous phase.