Table 3.
The limits of detection (LOD), limit of quantification (LOQ), the coefficient of determination (R2), dynamic range (LDR) and repeatability (RSD) for investigated pharmaceuticals.
| Parameters | Caffeine (CAF) | Ibuprofen (IBU) | Carbamazepine (CBM ) |
|---|---|---|---|
| Linearity range | 1000 to 10,000 ng/L | 600 to 60,000 ng/L | 300 to 10,000 ng/L |
| Slope n = 3 | 2291.7 ± 2.97 | 34.17 ± 0.0001 | 31,578.0 ± 0.54 |
| Intercept n = 3 | 905.4 ± 13.84 | 20.11 ± 0.0003 | 48,880.4 ± 2.35 |
| Correlation coefficient (R2) | 0.99995 | 0.99993 | 0.99998 |
| Limit of detection | 300 ng/L | 200 ng/L | 100 ng/L |
| Limit of quantification | 1000 ng/L | 600 ng/L | 300 ng/L |
| Repeatability Precision (RSD) n = 6 | 2.62% | 3.10% | 2.84% |
| Repeatability Intermediate Precision (RSD) n = 6 | 2.72% | 2.04% | 1.14% |