Simultaneous Determination of Binary Mixtures of Tartrazine and Quinoline Yellow Food Colorants in Various Food Samples and Cosmetic Products in Micellar Media by H-Point Standard Addition Method (HPSAM)

Abstract

H-point standard addition method (HPSAM) was applied for simultaneous determination of Tartrazine and Quinoline yellow food colorants. The method is based on the complexation of food dyes Tartrazine and Quinoline yellow with potassium chromate or Cr (III) as complexing agent at pH 6.0 and solubilizing the complexes in Tween-80 micellar media. Tartrazine and Quinoline yellow can be determined simultaneously in the concentration range 2.67-12.0 and 0.954-2.39 µg /mL respectively. This method has satisfactorily been applied for the determination of Tartrazine and Quinoline yellow in synthetic binary mixture and commercial products. The accuracy and reproducibility of the method has been checked in their synthetic mixture.