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.
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
