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Electroanalytical determination of the sunscreen agent octocrylene in cosmetic products

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Synopsis

An electroanalytical method was developed to detect and quantify the sunscreen agent octocrylene (OCR) in cosmetic products. The method was based on electrochemical reduction, using voltammetric techniques. OCR was reduced at −0.97 V vs. Ag/AgCl on a glassy carbon electrode using a mixture of Britton–Robinson buffer (0.04 mol L−1) and ethanol (7 : 3, v/v) as the supporting electrolyte solution. Under optimized conditions and square‐wave voltammetry, OCR response was linear from 5.0 × 10−6 to 8.0 × 10−5 mol L−1 (r =0.9995), with a limit of detection of 2.8 × 10−6 mol L−1. The proposed electroanalytical method proved simple, fast and suitable for detection and quantification of OCR in samples of cosmetic products, with satisfactory results in the recovery test and analytical determination in real samples.
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Document Type: Research Article

Affiliations: 1: Department of Chemistry, Universidade Federal de Mato Grosso do Sul. Av. Filinto Muller, 1555 Caixa Postal 549, Campo Grande, MS 79074-460 2: School of Science and Technology, Universidade Federal da Grande Dourados, Rodovia Dourados-Itahum, km 12 Dourados, MS 79804-970, Brazil

Publication date: February 1, 2012

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