Simple Extraction and HPLC Determination of UV-A and UV-B Filters in Sunscreen Products

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• 作者：D. De Orsi ; G. Giannini ; L. Gagliardi ; R. Porrà ; S. Berri ; A. Bolasco ; I. Carpani and D. Tonelli
• 关键词：Column liquid chromatography ; Quality control ; UV filters in cosmetic products ; Sunscreen products
• 刊名：Chromatographia
• 出版年：2006
• 出版时间：November, 2006
• 年：2006
• 卷：64
• 期：9-10
• 页码：509-515
• 全文大小：240 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Analytical Chemistry
  Organic Chemistry
  Pharmacy
  Biochemistry
  Plant Sciences
  Measurement Science and Instrumentation
  
• 出版者：Vieweg Verlag
• ISSN：1612-1112

文摘

The determination of 11 organic UV filters, worldwide authorised in sunscreen formulations, was performed by HPLC with UV spectrophotometric detection. The filters determined were: phenylbenzimidazole sulfonic acid, benzophenone-4, benzophenone-3, 4-methylbenzylidene camphor, ethylhexyl methoxycinnamate, octocrylene, methylene bis-benzotriazolyl tetramethylbutyl phenol, butyl methoxydibenzoylmethane, bis-ethylhexyloxyphenol methoxyphenyltriazine, ethylhexyl triazone, and diethylamino hydroxybenzoyl hexyl benzoate. Three analytical methods were developed which were based on an ultrasonic extraction of the sample in methanol/1% aqueous acetic acid (70:30, v/v) or dimethylacetamide/propan-2-ol (1:1, v/v) in dependence of the water or fat-solubility of the filter, followed by HPLC separation and quantitation. HPLC was carried out using three different columns and eluting conditions. Standard calibration curves were linear for all the analytes over the concentration range 0.5–100 μg mL?1. UV measurements were carried out at 280, 300, 310 or 360 nm with the aid of a diode array detector in dependence on the maximum absorption of each filter. Quantitative recoveries were obtained for all sunscreen compounds determined in homemade formulations. The proposed analytical procedure has been successfully applied for the analysis of commercial samples in order to check the presence of UV filters and to determine their concentration.