@Article{NevesArPaAzMaMa:2019:ElDeSu,
author = "Neves, Raiane Aparecida Lopes and Ara{\'u}jo, Fausto Moreira and
Pacheco, Felipe Siqueira and Azevedo, Gustavo Chevitarese and
Matos, Maria Auxiliadora Costa and Matos, Renato Camargo",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade Federal de Juiz de Fora (UFJF)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal
de Juiz de Fora (UFJF)} and {Universidade Federal de Juiz de Fora
(UFJF)} and {Universidade Federal de Juiz de Fora (UFJF)}",
title = "Electrochemical determination of sunscreens agents in cosmetic
using square wave voltammetry",
journal = "Electroanalysis",
year = "2019",
volume = "31",
number = "3",
pages = "496--503",
month = "Mar.",
keywords = "2-ethylhexyl-4-methoxycinnamate, benzophenone-3, camphor
4-methylbenzylidene, chemical analysis, suncare/UV protection.",
abstract = "Sunscreen agents and in particular UV filters are compounds added
in different cosmetic formulations, that has the function of
preventing damage caused by sun exposition. Therefore, this paper
proposes the development of a simple, fast and reliable
electroanalytical method utilizing square wave voltammetry (SWV)
to the determination of Benzophenone-3 (BZ-3), camphor
4-methylbenzylidene (MBC) and 2-ethylhexyl-4-methoxycinnamate
(OMC) in cosmetic samples. The electrochemical system consisted of
a cell with three electrodes: work - gold electrode modified,
reference - Ag/AgCl(sat) and auxiliary - platinum, using as
supporting electrolyte 4.0 mL of Britton Robinson Buffer 0.04 mol
L-1 (pH=4.0), 1.0 mL of methanol and 5.50x10(-4) mol L-1 of
cetyltrimethylammonium bromide (CTAB). The method was validated
using three commercial sunscreen samples and the results showed
recovery values between 83 and 98 %. The average values found for
the analysed samples were 3.49 % m/m (728 mg L-1) to BZ-3, 0.56 %
m/m (113 mg L-1) to MBC and 0.99 % m/m (208 mg L-1) to OMC. The
detection (DL) and quantification (QL) limits were 0.47 mg L-1 and
1.56 mg L-1 to BZ-3, 0.77 mg L-1 and 2.58 mg L-1 to MBC and 0.78
mg L-1 and 2.59 mg L-1 to OMC, respectively. The sunscreen
protector samples were also evaluated by high-performance liquid
chromatography (HPLC) demonstrating a good correlation between the
results and compared the results with allowed concentration.",
doi = "10.1002/elan.201800747",
url = "http://dx.doi.org/10.1002/elan.201800747",
issn = "1040-0397",
language = "en",
targetfile = "neves_electrochemical.pdf",
urlaccessdate = "27 abr. 2024"
}