Reference

standards

Calibration curve

R²

Linear range (µg/mL)

LOD (µg/mL)

LOQ

(µg/mL)

Gallic acid

y = 6.9 × 10⁷x ? 16,518

0.9999

1.973 - 126.3

0.009

0.029

Oxypaeoniflorin

y = 1.5 × 10⁷x ? 14,298

0.9995

3.109 - 199.0

0.054

0.180

Paeonolide

y = 2.8 × 10⁷x ? 4161

0.9999

0.752 - 96.29

0.047

0.157

Paeoniflorin

y = 1.1 × 10⁷x + 41,343

0.9999

12.27 - 392.7

1.319

4.398

Benzoylpaeoniflorin

y = 5.2 × 10⁷x ? 34,993

0.9999

1.409 - 90.14

0.204

0.680

Paeonol

y = 7.0 × 10⁷x ? 57,901

0.9998

4.155 - 265.9

0.004

0.013