Determination of Sunset Yellow and Tartrazine in Food Samples by Combining Ionic Liquid-Based Aqueous Two-Phase System with High Performance Liquid Chromatography

Figure 7

The chromatograms of standard solution and sample solution before and after extraction. (a) Standard solution of 0.25μg/mL Ta and 0.25μg/mL SY; (b) standard solution of 0.25μg/mL Ta and 0.25μg/mL SY after IL-salt ATPS extraction; (c) candy sample solution without pretreatment; (d) candy sample solution with polyamide adsorption method; (e) and candy sample solution with IL-salt ATPS ( mL,  g).

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