Objective:To establish a capillary gas chromatography(GC) method for the determination of patchouli alcohol in Huoxiangzhengqi Liquid.Methods: The samples was determined by capillary GC

the chromatographic system was as follows: A column(30 m×0.32 mm×0.25 μm) was used Column temperature was controlled by programming: the initial temperature 170 ℃

held for 3 min

and then rose at a rate of 1 ℃·min-1 up to 182 ℃ for 1 min

finally

rose at a rate of 60 ℃·min-1 up to 275 ℃

holding for 5 min.The inlet temperature and the detector temperature were 280 ℃.The flow rate of carrier gas(Nitrogen) was 0.6 mL·min-1 and n-octadecand was used as internal standard.Results: A good linearity was obtained in the range of 0.041 1～0.411 2 mg·mL-1

Y=2.94X+0.012 8

r=0.999 2.The average recovery was 97.67% with a RSD of 1.48%(n=6).Conclusion: This method is simple and accurate. It can be used for the quality control of Huoxiangzhengqi Liquid.