Table 2.
Chromatographic characteristics of the method for the high performance liquid chromatography (HPLC) analysis of dyes.
| Colorant | Wavelength (nm) | Calibration Equation | LOD (μg·mL−1) | LOQ (μg·mL−1) | Correlation Coefficient (n = 3) | RSD (%) |
|---|---|---|---|---|---|---|
| Quinoline Yellow (E104) | 425 | y = 465.0856x − 0.1182 | 1.00 | 3.32 | 0.9994 | 0.464 |
| Sunset Yellow (E110) | 480 | y = 562.5234x − 0.0315 | 0.40 | 1.33 | 0.9995 | 1.088 |
| Ponceau 4R (E124) | 510 | y = 154.5389x + 0.2086 | 0.70 | 2.33 | 0.9991 | 1.784 |
| Tartrazine (E102) | 425 | y = 580.9923x − 0.2535 | 3.72 | 12.38 | 0.9993 | 1.663 |
| Carmine (E120) | 520 | y = 86.1634x − 0.0242 | 2.40 | 7.99 | 0.9989 | 2.421 |