Table 3.
Linear regression, LOD, LOQ and recovery of the investigated compounds.
| Analytes | Regression equation | R2 | Linear range (μg/mL) | LOD (μg/mL) | LOQ (μg/mL) | Recovery (%) |
|---|---|---|---|---|---|---|
| Liensinine | Y=0.0195X-0.0003 | 0.9997 | 3.2–103.0 | 0.8 | 1.6 | 98.4 |
| Dauricine | Y=0.0351X+0.0067 | 0.9995 | 0.8–25.3 | 0.4 | 0.8 | 102.8 |
| Isoliensinine | Y=0.0331X-0.0705 | 0.9998 | 6.7–215.0 | 0.8 | 1.7 | 103.9 |
| Neferine | Y=0.0378X-0.0044 | 0.9997 | 3.3–106.5 | 0.4 | 0.8 | 97.6 |
| Nuciferine | Y=0.1474X+0.0005 | 0.9999 | 0.4–13.4 | 0.2 | 0.4 | 99.3 |
LOD: limit of determination; LOQ: limit of quantitation.