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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 µM. In addition, the detection limit was lower 0.03 µM under the optimal conditions. The modified electrode shows appropriate selectivity for amaranth. In real samples, the rendered approach is used to amaranth determination, successfully.

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