Table 1 Linear regression data of standards
Analyte | Regression equation | Linearity range ( μg/mL) | R 2 | LOD (μ g/mL) | LOQ (μ g/mL) |
|---|---|---|---|---|---|
UV detector | |||||
Loganic acid | y = 7230.37x + 5965.70 | 20-150 | 0.9996 | 0.24 | 1.07 |
Mangiferin | y = 22085.43x-36638 | 500-3000 | 0.9995 | 0.39 | 1.24 |
Sweroside | y = 7258.44 + 3330.77 | 3-60 | 0.9991 | 0.27 | 1.02 |
MS detector | |||||
Gentiopicroside | y = 118727.46x + 12960.30 | 0.07-5 | 0.9997 | 0.014 | 0.049 |
Swertiamarin | y = 7258.44 + 3330.77 | 0.04-5 | 0.9996 | 0.009 | 0.023 |