Fast Simultaneous Determination of Eight Sudan Dyes in Chili Oil by Ultra-High-Performance Supercritical Fluid Chromatography

Figure 3

The chromatograms (480 nm) of eight Sudan dyes processed by different organic modifiers (a) and different ratio of methanol/acetonitrile (v/v) as organic modifier (b): (A), Sudan I; (B), Para red; (C), Sudan II; (D), Sudan red G; (E), Sudan III; (F), Sudan red 7B; (G), Sudan red B; (H), Sudan IV.

(a)

(b)