测定复方乙酰水杨酸片的方法已有多种~[1,2],但操作和数据处理较为繁琐。采用由双波长系数倍率法导出的倍增差示法,目前对于二组分的测定也有文献报道~[3]。我们用该法扩展为三组分分析,对复方乙酰水杨酸片中的乙酰水杨酸(A),非那西丁(P)和咖啡因(C)进行了测 There are many methods for the determination of compound acetylsalicylic acid tablets [1,2], but the operation and data processing are more complicated. The double-wavelength multiplication method derived from the double wavelength coefficient magnification method has been reported in the literature for the determination of two components [3]. We extended this approach to a three-component analysis that measured acetylsalicylic acid (A), phenacetin (P), and caffeine (C) in the compound acetylsalicylic acid tablets