Voltammetric determination of sunscreen by convenient epoxy-carbon composite electrodes

Chang, Miaw-Ling; Chang, Chur-Min

doi:10.38212/2224-6614.2783

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…To the best of our knowledge, there are a limited number of published articles dealing with the determination of sunscreen agents in cosmetics by means of electrochemical techniques. Differential pulse voltammetry using a carbon-epoxy composite electrode in non-aqueous solvents [85] or mercury film electrode in strongly alkaline media [86] have been successfully applied to determine different UV filters in sunscreen products. Square wave voltammetry using GCE is fast and sufficiently sensitive to ensure octocrylene (OCR) quantification at low concentrations [87].…”

Section: Uv Filters In Sunscreen Productsmentioning

confidence: 99%

Electrochemical sensors for the safety and quality control of cosmetics: An overview of achievements and challenges

Dodevska

Hadzhiev

Shterev

2022

J. Electrochem. Sci. Eng.

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Due to the rapid growth of the cosmetic industry in recent years, the development of new, reliable, cost-effective, ease of use and rapid methods to assay cosmetics’ quality is of particular importance. Modern electrochemistry provides powerful analytical techniques with excellent sensitivity, instrumental simplicity and portability, providing reliable alternatives to conventional analytical methods. This review aims to give readers a clear view of advances in areas of electrode modification, successful strategies for signal amplification, and miniaturization techniques used in electroanalytical devices for cosmetics control and safety. We have summarized recent trends in the nonenzymatic electrochemical sensor systems applied in the analysis of cosmetic products revealing that there are a variety of efficient sensors for whitening agents, preservatives, UV filters, heavy metals, etc. In conclusion, current challenges related to the sensors design and future perspectives are outlined.

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Section: Uv Filters In Sunscreen Productsmentioning

confidence: 99%

Electrochemical sensors for the safety and quality control of cosmetics: An overview of achievements and challenges

Dodevska

Hadzhiev

Shterev

2022

J. Electrochem. Sci. Eng.

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“…The electrodes were prepared by mixing a graphite and expoxy (CaldoFix) resin. The choice in materials stems from the inherent limitation of using metallic electrodes in the detection region of the NMR spectrometer , as well as from the fact that carbon-based electrodes can be used in a wide range of applications. − Furthermore, composite electrodes have been shown to have good mechanical stability, are able to withstand a wide range of applied potentials, and are compatible with nonaqueous solvents. − In addition, the electrode’s surface can be renewed simply by polishing the material, which shows the advantages of using such electrodes and why their application in electrochemical systems has been investigated over the years. − …”

Section: Introductionmentioning

confidence: 99%

Composite Graphite–Epoxy Electrodes for In Situ Electrochemistry Coupling with High Resolution NMR

et al. 2022

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The in situ coupling between electrochemistry and spectrometric techniques can help in the identification and quantification of the compounds produced and consumed during electrochemical reactions. The combination of electrochemistry with nuclear magnetic resonance is quite attractive in this respect, but it has some challenges to be addressed, namely, the reduction in the quality of the NMR signal when the metallic electrodes are placed close to or in the detection region. Since NMR is not a passive technique, the convective effect of the magnetic force (magnetoelectrolysis), which acts by mixing the solution and increasing the mass transport, has to be considered. In seeking to solve the aforementioned problems, we developed a system of miniaturized electrodes inside a 5 mm NMR tube (outer diameter); the working and counter electrodes were prepared with a mixture of graphite powder and epoxy resin. To investigate the performance of the electrodes, the benzoquinone reduction to hydroquinone and the isopropanol oxidation to acetone were monitored. To monitor the alcohol oxidation reaction, the composite graphite–epoxy electrode (CGEE) surface was modified through platinization. The electrode was efficient for in situ monitoring of the aforementioned reactions, when positioned 1 mm above the detection region of the NMR spectrometer. The magnetoelectrolysis effect acts by stirring the solution and increases the reaction rate of the reduction of benzoquinone, because this reaction is limited by mass transport, while no effect on the reaction rate is observed for the isopropanol oxidation reaction.

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"Aplicação de eletrodos compósitos a base de poliuretana-grafite"

Cervini¹

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Voltammetric determination of sunscreen by convenient epoxy-carbon composite electrodes

Cited by 4 publications

References 15 publications

Electrochemical sensors for the safety and quality control of cosmetics: An overview of achievements and challenges

Electrochemical sensors for the safety and quality control of cosmetics: An overview of achievements and challenges

Composite Graphite–Epoxy Electrodes for In Situ Electrochemistry Coupling with High Resolution NMR

"Aplicação de eletrodos compósitos a base de poliuretana-grafite"

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