Table 1.
Analyte a | Linear Range (μg·mL−1) | Calibration Equation b | r2 | LOD (μg·mL−1) | LOQ (μg·mL−1) | Intra-Day RSD (%) (n = 6) | Inter-Day RSD (%) (n = 6) | Recovery and RSD (%) (Mean, n = 6) | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
L1 | L3 | L5 | L1 | L3 | L5 | |||||||
1 | 3.1~32.2 | Y = 7701.546x + 9983 | 0.9992 | 0.26 | 0.81 | 2.46 | 1.91 | 1.36 | 1.06 | 0.98 | 1.39 | 105.54, 3.32 |
2 | 3.1~32.2 | Y = 5548.525x + 15,762 | 0.9995 | 0.29 | 0.95 | 3.27 | 2.38 | 1.57 | 1.62 | 1.78 | 1.20 | 104.06, 2.96 |
3 | 20.5~520.6 | Y = 7171.274x + 31,544 | 0.9993 | 0.03 | 0.11 | 3.36 | 1.50 | 2.02 | 1.83 | 1.19 | 1.14 | 102.95, 3.37 |
4 | 3.1~32.2 | Y = 9108.011x + 6141 | 0.9996 | 0.11 | 0.37 | 2.50 | 1.66 | 1.46 | 1.79 | 1.54 | 1.44 | 104.92, 2.70 |
a The compound codes 1, 2, 3, and 4 of each analyte refers to epimedin A, epimedin B, epimedin C, and icariin, respectively; b Y: peak area; X: concentration of compound (μg·mL−1).