In this contribution, a new sensitive and selective method was developed for the sensitive quantification of tartrazine based on
the catalytic effect of AgNPs on the oxidation of tartrazine in acetate–acetic acid buffer media. The proposed method was applied to the determination of tartrazine in proprietary foods purchased from local stores. The results, shown in Tables 1 and 2, suggest that the method is suitable for the determination of tartrazine. Furthermore,very accurate results were obtained for spiked values of the tartrazine into the food samples. In addition to accuracy, the method is simple and economical for the determination of tartrazine in food samples.