A Comparative Study for Separation, Preconcentration and Determination of Tartrazine (E 102) in Soft Drink Samples by Two Kinds of Amberlite Resins

摘要: Separation, preconcentration, and spectrophotometric determination of tartrazine (E 102) was performed by solid-phase extraction methods with using spectrophotometry. For this purpose, Amberlite XAD-1180 XAD-16 resins mini-chromatographic column were used. All absorbance measurements the dye determined at 427 nm. Analytical parameters including pH, sample eluent flow rates, type, ionic strength, volume, adsorption isotherms investigated optimized. Under optimum condition interference effect main cations, some anions widely used dyes examined. Detection limits proposed as 5.7 1.2 μg L−1 for resins, respectively. Linear dynamic ranges found between 0.4–30 0.4–12 mL−1 The preconcentration factors 60 80 columns, Relative standard deviations lower than 7 % throughout all experiments two methods. Developed validated checked levels in soft drink samples addition analyte. comparisons analysis contents food samples. Tartrazine concentrations, solid samples, ranged 146 391 μg/g. content liquid 7.4 7.3 μg/mL X1180 X16 methods, results suggest that are suitable tartrazine. Very accurate obtained spiked values into In to accuracy, method is simple, environmental friendly, economical level analytical parameters, isotherm studies kinds resins. It observed fitted linear form Freundlich model.