Abstract
A micellar electrokinetic chromatographic system using indirect UV detection was developed for the analysis of saturated fatty acids. Sodium dodecyl benzenesulfonate (SDBS) was used as micellar surfactant as well as chromophore for the indirect detection. The effects of the addition of acetonitrile and Brij on the migration and solubility of the fatty acids was investigated. With a mixture of 10 m M SDBS + 50% acetonitrile + 30 m M Brij, a complete separation of the C 8-C 20 fatty acids was obtained. The applicability of the developed system for the analysis of fatty acids in butter is demonstrated.
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