Simultaneous Determination of Sunset Yellow FCF, Allura Red AC, Quinoline Yellow WS, and Tartrazine in Food Samples by RP-HPLC

Table 3

Chromatographic data of the dyes with the optimized gradient program in this study.

Peak	Dye	λmax (nm)	tR
1	Tartrazine	472	6.1 ± 0.1
2	Quinoline Yellow WS I	417	8.7 ± 0.1
3	Sunset Yellow FCF	482	9.9 ± 0.1
4	Allura Red AC	507	10.9 ± 0.1
5	Quinoline Yellow WS II	417	14.6 ± 0.1
6	Quinoline Yellow WS III	417	15.1 ± 0.1