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- Title
A Nano-Sepiolite Clay Electrochemical Sensor for the Rapid Electro-;Catalytic Detection of Hydroquinone in Cosmetic Products.
- Authors
Aydar, Sevda; Bayraktepe, Dilek Eskiköy; Filik, Hayati; Yazan, Zehra
- Abstract
In this paper, a simple and sensitive electrochemical nano-sensor was developed for the analysis of hydroquinone based on sepiolite clay modified carbon paste sensor by using differential pulse adsorptive stripping voltammetry and square wave adsorptive stripping voltammetry. Surface morphology of sensors was characterized by using scanning electron microscopic technique, electrochemical impedance spectroscopy, and cyclic voltammetry. Electrochemical redox properties of hydroquinone were investigated by cyclic voltammetry. The oxidation peak current of hydroquinone in differential pulse and square wave adsorptive stripping voltammetry changes linearly in the concentration range of 0.01-;700 μmolL-;1 and 0.01-;700 μmolL-;1, respectively. Excellent limit of detection (LOD) and limit of quantification (LOQ) values were found as 0.01096 μmolL-;1 and 0.03654 μmolL-;1 for differential pulse, and 0.01031 μmolL-;1 and 0.03438 μmolL-;1 for square wave adsorptive stripping voltammetry, respectively. Additionally, the newly proposed sensor was applied to the analysis of hydroquinone in cosmetic cream with satisfying results.
- Subjects
ELECTROCHEMICAL sensors; MEERSCHAUM; HYDROQUINONE; COSMETICS; CYCLIC voltammetry
- Publication
Acta Chimica Slovenica, 2018, Vol 65, Issue 4, p946
- ISSN
1318-0207
- Publication type
Article
- DOI
10.17344/acsi.2018.4615