Research Article
Fast Simultaneous Determination of Eight Sudan Dyes in Chili Oil by Ultra-High-Performance Supercritical Fluid Chromatography
Table 1
The linear range, slope, intercept, correlation coefficient, LOD, and LOQ of eight Sudan dyes.
| Dyes | Linear rang (μg/mL) | Slope | Intercept | r2 | LOD (mg/kg) | LOQ (mg/kg) |
| Sudan I | 0.5–50 | 2.72 × 103 ± 51.4 | −1.78 × 102 ± 3.4 | 0.9995 | 0.15 | 0.50 | Para red | 0.5–50 | 3.17 × 103 ± 39.2 | −4.60 × 102 ± 8.5 | 0.9997 | 0.15 | 0.50 | Sudan II | 0.5–50 | 2.76 × 103 ± 48.5 | −1.18 × 102 ± 2.3 | 0.9998 | 0.15 | 0.50 | Sudan red G | 0.5–50 | 3.72 × 103 ± 29.7 | −1.18 × 102 ± 1.9 | 0.9994 | 0.20 | 0.60 | Sudan III | 1.0–50 | 3.52 × 103 ± 40.3 | −5.87 × 102 ± 10.6 | 0.9995 | 0.20 | 0.60 | Sudan red 7B | 0.6–50 | 4.09 × 103 ± 80.7 | −6.86 × 102 ± 10.8 | 0.9995 | 0.15 | 0.50 | Sudan red B | 0.3–50 | 8.40 × 103 ± 77.6 | 2.91 × 102 ± 5.7 | 0.9997 | 0.10 | 0.30 | Sudan IV | 1.0–50 | 2.58 × 103 ± 19.8 | −4.48 × 102 ± 6.0 | 0.9999 | 0.30 | 1.00 |
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