用双波长分光光度法和吸收度比法,不经分离直接测定复方保泰松片中保泰松和氨基比林的含量。其中,双波长分光光度法同时在单波长分光光度计和双波长分光光度计上进行了试验。本法方法迅速,操作简便。保泰松的平均回收率为100.1～100.7%,变异系数小于1.61%。氨基比林的平均回收率为98.17～100.7%,变异系数小于0.94%。其准确度和精密度能满足制剂分析的要求。 Using dual-wavelength spectrophotometry and absorbance ratio method, the content of phenylbutazone and aminopyrine in Fufang Pontalone tablets was directly determined without separation. Among them, the dual-wavelength spectrophotometry in both single-wavelength and dual-wavelength spectrophotometer were tested. The method is rapid and easy to operate. Phenylbutazone average recovery was 100.1 ~ 100.7%, coefficient of variation was less than 1.61%. The average recoveries of aminopyrine ranged from 98.17% to 100.7% with a coefficient of variation of less than 0.94%. Its accuracy and precision can meet the requirements of formulation analysis.