A sensitive voltammetric analysis and detection of Alizarin Red S onto a glassy carbon electrode modified by an organosmectite

Gullit Deffo; Ranil Clément Tonleu Temgoua; Serge Foukmeniok Mbokou; Evangéline Njanja; Ignas Kenfack Tonlé; Emmanuel Ngameni

Sensors International (Jan 2021)

A sensitive voltammetric analysis and detection of Alizarin Red S onto a glassy carbon electrode modified by an organosmectite

Gullit Deffo,
Ranil Clément Tonleu Temgoua,
Serge Foukmeniok Mbokou,
Evangéline Njanja,
Ignas Kenfack Tonlé,
Emmanuel Ngameni

Affiliations

Gullit Deffo: Electrochemistry and Chemistry of Materials, Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon
Ranil Clément Tonleu Temgoua: Electrochemistry and Chemistry of Materials, Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon; University of Nantes, CNRS, CEISAM UMR 6230, F-440000 Nantes, France
Serge Foukmeniok Mbokou: Electrochemistry and Chemistry of Materials, Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon
Evangéline Njanja: Electrochemistry and Chemistry of Materials, Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon; Corresponding author.
Ignas Kenfack Tonlé: Electrochemistry and Chemistry of Materials, Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon
Emmanuel Ngameni: Laboratory of Analytical Chemistry, Department of Chemistry, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon

Journal volume & issue: Vol. 2
p. 100126

Abstract

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A low-cost, simple and ultra-sensitive voltammetric sensor for the determination of Alizarin Red S (ARS) in aqueous solution using a glassy carbon electrode modified by drop coating of organosmectite film is reported. Various proportions of dimethyldioctadecylammonium (DODA+) cations have been intercalated by cation exchange in the interlayer of the natural clay. Physico-chemical characterization techniques were used to confirm the effectiveness of the intercalation. Electrochemical characterization techniques have been used to determine the surface charge, the permeability, the charge transfer resistance and the real surface of elaborated electrodes. Differential pulse voltammetry (DPV) was used for the reduction of anthraquinone function of ARS, and under optimized conditions, the calibration curve was plotted in the concentration range from 0.01 μM to 0.1 μM, revealing a detection limit of 3.8 nM. The interfering effect of some ions and compounds was evaluated to highlight the selectivity of elaborated sensor. The designed sensor was applied successfully in real samples.

Published in Sensors International

ISSN: 2666-3511 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://www.keaipublishing.com/en/journals/sensors-international/

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