Table 4. Standard curves, linear coefficients and linear ranges of GA in different bio-samples.
Bio-sample | Standard curve | Linear coefficient r2 | Linear range (ng/mL) |
---|---|---|---|
Plasma of mice | Y=0.006X+0.059 | 0.9991 | 4-6000 |
Heart | Y=0.011X+0.182 | 0.9991 | 5-6000 |
Liver | Y=0.007X+0.217 | 0.9994 | 4-6000 |
Spleen | Y=0.005X+0.199 | 0.9991 | 4-6000 |
Lung | Y=0.007X+0.112 | 0.9994 | 4-6000 |
Kidney | Y=0.005X+0.158 | 0.9994 | 4-6000 |
Abbreviations: GA, glycyrrhetinic acid; Y, the peak area ratio of GA to IS; X, the concentration of GA.