Determination of Menthol in Xiao’ er Fufang Mahuangjian Jiegeng Syrups by HS-GC / 中国药师

ABSTRACT

Objective:To establish an HS-GC method for the determination of menthol in Xiao ’ er Fufang Mahuangjian Jiegeng syrups. Methods:An Agilent DB-WAX column(30 m × 0. 53 mm,1. 0 μm)with an FID detector was used;the inlet temperature was 150℃, the detector temperature was 250℃;the flow rate of the carrier gas ( N2 ) was 2. 0 ml·min-1 , the split ratio was 1∶1; the headspace equilibrium temperature was 80℃, the balance time was 30 min, and the sample volume was 1ml. Results:The calibration curve of menthol was within the range of 2. 09-20. 92 μg·ml-1, which showed a good linear relationship (r=0. 999 1). The average recovery of menthol was 98. 0%(RSD=1. 8%, n=6). Conclusion: The method is simple, accurate and reproducible, and can be used for the determination of menthol in Xiao’ er Fufang Mahuangjian Jiegeng syrups.