Micellar Electrokinetic Chromatography

Micellar electrokinetic chromatography (MEKC) is a mode of capillary electrophoresis that allows for the separation of neutral molecules in an electric field. Typically, neutral molecules move with electroosmotic flow (EOF) or bulk flow during electrophoretic separations resulting in no temporal resolution between mixtures of neutral analytes. Inclusion of surfactant micelles in the separation buffer allows for the separation of neutral analytes from one another through association with the micelle. Here we outline the implementation of MEKC for the separation of neutral molecules using a mixture of nitroaromatic explosives and their degradation products serving as a test analyte mixture.