UV/VIS determining tartrazine (E 102) in a commercial food dye

Our research presents an analytical curve applicable to accurately determining unknown concentrations of tartrazine in an aqueous solution of any sample. The analytical curve that this study develops may be used to determine the concentration of tartrazine in an aqueous solution of a typical commercially available food dye, which is a mixture of tartrazine and dextrose. The concentration determined in the sample of the food dye was c=7.76 g/ dm3. The examined food dye contained 0.27% of tartrazine. To characterize the presented analytical method, LOD (limit of detection) and LOQ (limit of quantification) were then calculated, obtaining better values compared to the data existent in the literature.