ENHANCED MICELLAR ELECTROKINETIC CAPILLARY CHROMATOGRAPHY SEPARATIONSON ANIONIC POLYMER-COATED CAPILLARY WITH PH-INDEPENDENT ELECTROOSMOTIC FLOW

Micellar electrokinetic capillary chromatography (MEKC) can be used to separate a variety of anionic, neutral and cationic analytes. Extreme acidic conditions limit the use of MEKC. However, with the use of an anionic polymer-coated capillary with pH-independent flow, the MEKC se parations can be achieved over an expanded pH range. An example of thi s enhancement will be presented using a five-phenol mixture as the sam ple over a pH range of 3 to 9.