Simultaneous Determination of Nine Active Compounds of the Traditional Chinese Medicinal Prescription Shaoyao-Gancao-Tang and Analysis of the Relationship between Therapeutical Effect and Compatibility of Medicines
Table 5
Linear regression equation, linear range, and limit of detections (LODs) for nine standard substances.
Standard substance
Linear regression equation
Correlation coefficient ()
Linear range (g/mL)
LOD (ng/mL)
LOQ (ng/mL)
Oxypaeoniflorin
0.9995
0.84~8.40
3.02
9.09
Albiflorin
0.9997
1.40~14.00
10.32
30.86
Paeoniflorin
0.9995
3.82~38.20
8.34
26.02
Benzoylpaeoniflorin
0.9997
0.94~9.40
6.23
19.31
Glycyrrhizic acid
0.9996
8.80~88.00
16.44
50.64
Liquiritin
0.9998
2.04~20.40
7.56
22.53
Liquiritigenin
0.9995
0.90~9.00
8.24
25.54
Isoliquiritin
0.9997
0.08~0.80
20.11
63.15
Isoliquiritigenin
0.9998
0.82~8.20
6.89
20.60
and stand for the peak area and the injection quantity (g) of each standard substance.
