A new voltammetric sensor according to graphene quantum dots/ionic liquid modified carbon paste electrode for amaranth sensitive determination

被引：14
作者：
Akbari, Sedighe [1 ]
机构：
[1] Islamic Azad Univ, Shahrbabak Branch, Shahrbabak, Iran
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 2022年 / 102卷 / 03期
关键词：
Amaranth; voltammetry; carbon paste electrode; ionic liquid; graphene quantum dots; SCREEN-PRINTED ELECTRODE; ELECTROCHEMICAL SENSOR; IONIC LIQUID; FUNCTIONALIZED GRAPHENE; SYNTHETIC DYES; SUNSET YELLOW; ASCORBIC-ACID; URIC-ACID; SUDAN I; NANOPARTICLES;
D O I：
10.1080/03067319.2020.1726338
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The voltammetric determination of amaranth is performed on the carbon paste electrode (CPE) surface that is enhanced using graphene quantum dots (GQD). The structure of ionic liquid (IL) may be used as an electrode modifier. Transmission electron microscopy (TEM) and Fourier transform infrared (FT-IR) analysis are used for characterising mentioned materials. The amaranth oxidation is performed by, chronoamperometry, and cyclic voltammetry (CV) as well as differential pulse voltammetry (DPV). It is done in a solution of blank phosphate buffer. Our suggested approach demonstrated proper linearity more than the range from 0.1 to 400.0 mu M. In addition, the detection limit was lower 0.03 mu M under the optimal conditions. The modified electrode shows appropriate selectivity for amaranth. In real samples, the rendered approach is used to amaranth determination, successfully.
引用
收藏
页码：789 / 803
页数：15
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