The recoveries of the four components aminopyrine, phenacetin, caffeine and phenobarbital was 99.6%, 99.7%, 100.0%and 98.2%, and the RSD was 1.1%, 1.2%, 1.9%and 1.9%(n=8) respectively.

• 本法测定去痛片中氨基比林、非那西丁、咖啡因和苯巴比妥的含量，回收率分别为99.；6%25、99