Article ID Journal Published Year Pages File Type
602438 Colloids and Surfaces B: Biointerfaces 2008 7 Pages PDF
Abstract

This paper proposes a methodology based on electrochemical reduction for the simultaneous determination of three sunscreen agents, namely 4-methylbenzylidene camphor (MBC), benzophenone-3 (BENZO) and 2-ethylhexyl-4-methoxycinnamate (EHMC) by differential-pulse polarography (DPP). The highest peak currents and optimal separation of reduction peaks were obtained by using a supporting electrolyte consisted of Britton–Robinson buffer–methanol (8:2) solution at pH 4.0 and cationic surfactant 3.0 × 10−4 mol L−1 cetyltrimethylammonium bromide (CTAB). The methodology was validated using four commercial sunscreen preparation as a sample and the results showed high recovery rates. The efficiency of the proposed methodology was demonstrated by comparing the results obtained by DPP with those obtained by the high-performance liquid chromatography (HPLC) method.

Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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