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V. S. Kurakina, O. M. Medvedeva, S. G. Dmitrienko, O. A. Shpigun
Determination of parabens in
cosmetic samples by capillary zone electrophoresis
Abstract
The separation conditions of
parabens by capillary zone electrophoresis (CZE) have been optimized. The effects
of sample injection time, potential, concentration and pH value of borate
buffer on separation have been investigated. The duration of analysis of
four-component mixture, including methyl-, propyl-, isopropyl- and butylparaben
doesn’t exceed 8 minutes. It takes 10 minutes to separate seven-component
mixture containing along with parabens such preservatives as benzoic, salicylic
and p-hydroxybenzoic acid. Parabens have been determined in cosmetic samples.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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