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采用一阶导数分光光度法测定胃炎合剂中盐酸普鲁卡因的含量，测定波长为309．5nm，平均回收率为100．06％，RSD=0．72％（n=5）本法简单、快速、准确，适用于该制剂的含量测定。
The first derivative spectrophotometry was used to determine the content of procaine hydrochloride in gastritis mixture. The detection wavelength was 309.5nm, the average recovery was 100.06%, RSD was 0.72% (n = 5) Fast, accurate, suitable for the determination of the content of the preparation.