• 文献标题:   A new voltammetric sensor according to graphene quantum dots/ionic liquid modified carbon paste electrode for amaranth sensitive determination
  • 文献类型:   Article, Early Access
  • 作  者:   AKBARI S
  • 作者关键词:   amaranth, voltammetry, carbon paste electrode, ionic liquid, graphene quantum dot
  • 出版物名称:   INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
  • ISSN:   0306-7319 EI 1029-0397
  • 通讯作者地址:   Islamic Azad Univ
  • 被引频次:   0
  • DOI:   10.1080/03067319.2020.1726338 EA FEB 2020
  • 出版年:  

▎ 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.