Table 2.

Linear regression equation results of 4 kinds of Pulsatilla saponins.

Compound	Regression equation	R 2	Linearity range (µg)
Pulsatilla saponin D	Y = 0.9781X + 5.7314	0.9999	1.84–18.42
Pulsatilla saponin A	Y = 0.9925X + 6.1778	0.9990	0.73–7.26
Pulsatilla saponin F	Y = 1.0209X + 5.7846	0.9996	1.49–14.88
B9	Y = 1.0403X + 5.4396	0.9998	1.16–11.55