Electrochemical Analysis of Sunset Yellow, Brilliant Blue, and Tartrazine Using Sensor Amplified with CuNiFe₂O₄ Hollow Spheres

One of the most important edible colours is used in various industries is Sunset Yellow, which is essential to measure according to its consumption. Therefore, a new electrochemical sensor is prepared to measure the food color additives in this work. In this study, CuNiFe₂O₄ nanospheres to prepare a potent modifier for carbon paste electrode (CPE). Due to environmental toxicity of food color additives, its sensitive, fast and, low-cost determination in workplace environments is of great interest. So, the modified CPE was applied as a sensitivity analysis approach for Sunset Yellow in present Brilliant Blue and Tartarzin in plasma samples. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used as techniques to optimize the analysis and measurement of Sunset Yellow. The calibration curve showed a linear range from 0.5 to 150 μM with a detection limit of 0.15 μM for Sunset Yellow. Simultaneous measurement of three colors, Sunset Yellow, Brilliant Blue and Tartrazine, is done on CPE/CuNiFe₂O₄ nanospheres surface and in simultaneous measurement received detection limits are 1.60 μM. The prepared sensor shows an outstanding ability to measure sunset in Sunich syrup and edible jelly as real samples.