Table 3.
Regression data, the limit of quantifications (LOQs, and the limit of detections (LODs) for TFFSI and six components.
| Compound | Calibration Curve | R2 | Linearity Range/(mg/mL) | LOD/(mg/mL) c | LOQ/(mg/mL) d |
|---|---|---|---|---|---|
| The total flavonoids of Flos Sophorae Immaturus a | Y = 9.93278X + 0.01922 | 0.99796 | 0.004–0.100 | 0.0030 | 0.0040 |
| Rutin b | Y = 9759.82662X−1.23991 | 0.99994 | 0.003125–1.000 | 0.0020 | 0.0030 |
| Nicotiflorin b | Y = 2299.7295X + 19.66392 | 0.99162 | 0.006–2.000 | 0.0050 | 0.0055 |
| Narcissoside b | Y = 2206.89713X + 67.81067 | 0.9973 | 0.004147–1.6 | 0.0030 | 0.0041 |
| Kaempferol b | Y = 21654.77389X + 139.37839 | 0.99905 | 0.004–1.000 | 0.0030 | 0.0038 |
| Isorhamnetin b | Y = 10605.6954X−30.38794 | 0.99682 | 0.00816–0.1700 | 0.0070 | 0.0080 |
| Quercetin b | Y = 12930.14145X + 159.16393 | 0.99631 | 0.0045–1.2000 | 0.0040 | 0.0042 |
a 7 different concentrations (n = 10); Y: The UV absorbance value of analyte; X: The concentration of rutin (mg/mL), b 7 different concentrations (n = 10); and Y: The peak area of compound; X: The concentration of compound (mg/mL), c LOD (the limit of detection), and d LOQ (the limit of quantification).