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1·There are some other ways to analyzed the contents of menthol and menthone, such as polarimetry, refraction index method and acetylation method.

薄荷醇和薄荷酮含量的测定方法有旋光测定法、折光指数法及乙酰化法。

2·OBJECTIVE To establish the method for determining the contents of menthone and P-menthone in the volatile oil of Spica Schizonepetae Tenuifoliae.

目的建立测定荆芥穗挥发油中薄荷酮、胡薄荷酮的含量测定方法。

3·Objective: to establish the contents determination method of (-) -menthone, menthol, cinnamic aldehyde in Po Sum on oil by capillary column gas chromatography.

目的：采用高效毛细管气相色谱法同时测定保心安油中(-)-薄荷酮、薄荷脑和桂皮醛的含量。