Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1228463 | Microchemical Journal | 2007 | 7 Pages |
Abstract
The voltammetric behavior of 4-methylbenzelidene camphor (MBC) was studied by square wave voltammetry (SWV) using mercury electrode. The experimental condition that provided the highest peak current with the best reduction signal definition of MBC was found in Britton-Robinson buffer and cationic surfactants, cetyltrimethylammoniun bromide (CTABr). A single peak of MBC reduction was observed at â 1.21 V versus Ag/AgCl. The developed methodology was applied for determination of MBC in commercial sunscreen SPF 15, 20 and 30 and for the simultaneous determination when other protection agents were associated, such as benzophenone-3 (BENZO) and octyl methoxycinammate (OMC). Both methodologies had shown good determination values for the analyzed samples. The calculated detection limit was 2.99 Ã 10â 9 mol Lâ 1 and the quantification limit was 9.98 Ã 10â 9 mol Lâ 1.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Juliano Carvalho Cardoso, Bruna Milca Lenzi Armondes, Tatiane Alfonso de Araújo, Jorge Luiz Jr., Nilva Ré Poppi, Valdir Souza Ferreira,