Parameters | Derivative spectrophotometric methods | HPLC method | ||
RPG | MTF | RPG | MTF | |
Linearity rangea (µg/mL) | 5.0 - 50.0 | 5.0 - 50.0 | 5.0 - 50.0 | 5.0 - 50.0 |
Intra-dayb, RSD% | 0.92 | 0.85 | 0.76 | 0.61 |
Inter-dayc, RSD% | 1.76 | 1.18 | 1.91 | 1.19 |
Regression equationd | A = 0.0111C + 0.0177 | A = 0.0045C + 0.0116 | A = 12,687.68C + 2930.32 | A = 34,449.77C + 12,527.40 |
Correlation coefficient, r | 0.9950 | 0.9999 | 0.9999 | 1.0000 |
LOD (µg/mL) | 0.170 | 0.347 | 0.601 | 0.545 |
LOQ (µg/mL) | 0.568 | 1.156 | 1.821 | 1.653 |