Abstract
This report details the comparison of AOT-decane oil-in-water and water-in-oil microemulsions as media for capillary electrophoresis. The microemulsion composition was varied to produce clear, conductive solutions. Clear microemulsions 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-water microemulsions is based on association with the TEA+. Several factors that could affect the migration of solutes in these media were studied. These include the composition of the microemulsion, the applied voltage, the temperature, and the pH of the aqueous phase.
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