本文提出用2,4-二硝基苯肼重量法和直接紫外光度法测定平喘酮。前者在控制反应温度、时间、酸度和试剂用量等条件下可得满意结果,并能用于气雾剂测定。后者操作简便,但吸收系数小,易受杂质干扰。两法回收率(n=12,t0.95)分别为99.42±0.30% In this paper, 2,4-dinitrophenylhydrazine gravimetric method and direct UV spectrophotometry determination of asthma ketone. The former in the control of the reaction temperature, time, acidity and reagent dosage conditions such as satisfactory results, and can be used for aerosol determination. The latter is simple, but the absorption coefficient is small, vulnerable to impurities. The recoveries of two methods (n = 12, t0.95) were 99.42 ± 0.30%