Objective: To establish a method for determination of camphor

menthol

borneol and methylsalicylate in Hongyao strapping. Method: Capillary gas chromatography was adopted. The chromatography separation was carried out with PEG-20M capillary column(0.25 μm×0.25 mm×30 m)

using a flame ionization detector. The injector and detector temperature were set at 200 ℃. The column temperature was 160 ℃. n-Octanol was used as internal standard. The sample solution was prepared by distillation with essential oil collector. Result: The resolution and linearity of camphor

menthol

borneol and methylsalicylate were good under the chromatographic conditions. The average recoveries of camphor

menthol

borneol and methylsalicylate were 99.8%

100.3%

99.5%

99.7%. Conclusion: This method is simple

sensitive

accurate and has good repeatability for controlling the quality of camphor

menthol

borneol and methylsalicylate in Hongyao strapping.