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

被引：0

作者：

Deffo G. ^{[1
]}

Tonleu Temgoua R.C. ^{[1
,2
]}

Foukmeniok Mbokou S. ^{[1
]}

Njanja E. ^{[1
]}

Kenfack Tonlé I. ^{[1
]}

Ngameni E. ^{[3
]}

机构：

[1] Electrochemistry and Chemistry of Materials, Department of Chemistry, University of Dschang, Dschang

[2] University of Nantes, CNRS, CEISAM UMR 6230

[3] Laboratory of Analytical Chemistry, Department of Chemistry, University of Yaoundé 1, Yaoundé

来源：

Sensors International | 2021年 / 2卷

关键词：

Alizarin red S; Cationic surfactants; Film modified electrode; Organosmectite; Voltammetric sensor;

D O I：

10.1016/j.sintl.2021.100126

中图分类号：

学科分类号：

摘要：

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. © 2021 The Authors

引用

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