Table 1.
Linearity, accuracy, LOD and LOQ parameters of the spectrophotometry method
| Parameters | TRG | DI | NA |
|---|---|---|---|
| Slope ± SD | 0.0430±0.0001 | 0.0285± 0.0003 | 0.0045±0.0003 |
| Confidence limits of slope (95%) | 0.0427;0.0426 | 0.0285;0.0285 | 0.0045;0.0044 |
| Intercept± SD | 0.020±0.0002 | 0.0003± 0.0002 | -0.0127±0.0001 |
| Confidence limits of intercept (95%) | 0.0201;0.0199 | -0.0002;-0.0004 | -0.0143;-0.0146 |
| Correlation coefficient (R2) | 0.9995 | 0.9997 | 0.9994 |
| Accuracy% | 96.0 | 92.9 | 104.2 |
| LOD (µg/mL) | 0.91 | 0.99 | 0.33 |
| LOQ (µg/mL) | 3.06 | 3.30 | 1.10 |