Table 3.
Regression equations, linearity ranges, correlation coefficients, LOD, and LOQ data of the seven analytes.
| Analytes | Regression equations | Linear range (ng/mL) | R2 | LODa (ng/mL) | LOQb (ng/mL) |
|---|---|---|---|---|---|
| Calycosin-7-O-Glc | Y = 0.00591514X + 0.00256763 | 11.48~765.0 | 0.9999 | 0.03 | 0.08 |
| (E)-THSG | Y = 0.000746494X − 0.0040087 | 48.36~3,224.0 | 1.0000 | 0.02 | 0.04 |
| Astragulin | Y = 0.000933611X − 0.00599332 | 4.523~301.5 | 0.9996 | 0.02 | 0.75 |
| Rosmarinic acid | Y = 0.000437025X − 0.00906707 | 11.70~780.0 | 0.9994 | 0.98 | 3.91 |
| Salvianolic acid A | Y = 0.000390993X − 0.0022037 | 6.075~405.0 | 0.9995 | 0.51 | 2.53 |
| Salvianolic acid B | Y = 0.000286894X + 0.004386 | 609.0~40,600.0 | 0.9999 | 1.27 | 5.08 |
| Calycosin | Y = 0.00265233X + 0.00139572 | 5.038~322.4 | 0.9995 | 0.04 | 0.15 |
a
LOD, limit of detection.
b
LOQ, limit of quantification.