Determination of Ferulic Acid in Nongsuo Danggui Pills by HPLC

A high performance liquid chromatography was developed for the determination of feralic acid in Nongsuo Danggui Pills. HPLC was performed on a Tsk-Gel C18column (4.6×150 mm, 5 μm) using methanol-water-phosphoric acid (30∶70∶0.3,V/V/V) as the mobile phase at a flow rate of 1.0 mL/min, and 320 nm as the detection wavelength . This method showed a good linear relationship，the mean recovery was 96.91%. This method can be used for the quality control of Nongsuo Danggui Pills.