Determination of ?-Pinene in Folium Pini by high performance capillary gas chromatography / 中成药

Objective: To establish a new method for determination of ? pinene in Folium Pini. Method: The contents of ? pinene were determined by high performance capillary gas chromatography with sequential increase of temperature programming. Results: The calibration curve showed good linearity over the range of 0.424 2.12?g( r =0.9999). The average recovery was 97.9% and the relative standard deviation was 2.9%( n =5), and it was found that the contents of ? pinene in dry herbs were markedly different from the contents in fresh herbs. Conclusion: The method is simple, and accurate with a good reproducibility and can be applied as quantitative analysis method for Folium Pini.