交流示波极谱法测定咖啡因的含量  

DETERMINATION OF CAFFEINE BY A. D. OSCILLOPOLAROGRAPHIC TITRATION

作　　者：张允明[1] 崔志俊[2] 张玉潜[2] 

机构地区：[1]滨州医学院化学教研室 [2]山东医科大学药学系

出　　处：《滨州医学院学报》1992年第1期25-26,96,共2页Journal of Binzhou Medical University

摘　　要：该法以过量KBiI_4沉淀咖啡因,剩余量的KBiI_4以AgNO_3滴定,用交流示波极谱图上I^-的切口消失指示终点。本法简便、快速,与国家药典方法结果一致。Adequate amount of KBiI_4 solution was added into caffeine solution to precipitate it. The excess KBiI_4 was titrated with AgNO_3 solution. The end point was indicated by means of disappearance of incision of 1' on dE/dt-E curve. The method is rapid, simple and not significantly different to the method adopted in Chinese Pharmacopoeia.

关 键 词：咖啡因 交流示波极谱 含量 测定 

分 类 号：R927.2[医药卫生—药学]