2008•Journal of Analytical ScienceRequires access

Cloud Point Extraction Comined with UV-spectrophotometry for the Determination of 2-hydroxy-4-methoxy-5-sulfo-benzophenone in Sunscreen

Haili Zhang

Abstract

A method has been developed for the separation and determination of benzophone-4 in sunscreen by cloud point extraction combined with UV-spectrophotometry.Effects of extraction conditions such as pH,concentration of the surfactant,equilibration temperature and time,have been investigated in detail.The presented method has been successfully applied for the determination of BP-4 in sunscreen with satisfactory results.

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Key concepts: Cloud point, Chemistry, Spectrophotometry, Extraction (chemistry), Benzophenone, Chromatography, Pulmonary surfactant, Photochemistry