Voltammetric analysis of sun-block preparations containing octocrylene and its association with 2-Hydroxy-4-methoxybenzophenone and octyl methoxycinnamate

• Published in: Microchemical journal 2013-01, Vol.106, p.378-383
• Main Authors: Ferreira, Valdir S., Júnior, João B.G., Oliveira, Célia Maria S.C., Takeuchi, Regina M., Santos, André L., Trindade, Magno A.G.
• Format: Article
• Language: English
• Subjects: Octocrylene; Sun-block preparations; Sunscreen agents; Voltammetric analysis
• ISSN: 0026-265X; 1095-9149
• DOI: 10.1016/j.microc.2012.10.002

In this work, an adsorptive cathodic stripping voltammetric method based on square wave voltammetry (SWV) was developed for determination of the sunscreen agent octocrylene (OCR) individually and simultaneously with 2-Hydroxy-4-methoxybenzophenone (BENZO-3) and octyl methoxycinnamate (OMC). All voltammetric experiments were conducted in a mixture 0.04molL−1 BR buffer: ethanol (80:20, v:v) using a hanging mercury drop electrode (HMDE) as working electrode. The proposed method could be successfully used to analyze commercial sun-block preparations containing OCR alone and combined with BENZO-3 and OMC. For all analyzed samples, the voltammetric method has allowed fast, simple and reliable determination of these sunscreen agents with minimal sample pre-treatment requirements. ► Use of HMDE as alternative to simultaneous detection of sunscreens agents ► Simultaneous determination of OCR, BENZO-3 and OMC ► Determination of sunscreen agents with minimal sample pre-treatment requirements