木文介绍了用CPA矩阵法同时测定多组分体系的基本原理和实验方法。用该法在UV-265分光光度计上,不经分离同时测定去痛片中的氨基比林、非那西丁、咖啡因、苯巴比妥四种组分的含量,方法简便、快速、准确。计算程序用BASIC语言编制。氨基比林、非那西丁、咖啡因和苯巴比妥的平均回收率分别为100.5%,100.5%,100.4%和100.7%。 Mu Wen introduced the basic principle and experimental method of simultaneous determination of multi-component system by CPA matrix method. With this method, UV-265 spectrophotometer was used to determine the contents of four components of aminopyrine, phenacetin, caffeine and phenobarbital in Zhutong tablets without separation at the same time. The method was simple, rapid, accurate. The calculation program is compiled in BASIC language. The average recoveries for aminopyrine, phenacetin, caffeine and phenobarbital were 100.5%, 100.5%, 100.4% and 100.7%, respectively.