摘要
本文用微分脉冲极谱法研究了秋水仙碱在不同介质和PH值等条件下的电化学行为.找到了以0.6%的四丁基氯化铵为支持电解质,在PH1.81的B.R.缓冲溶液中进行微分脉冲极谱法测定的最佳体系,检出限为6.0×10^(-7)mol/L,峰电流线性范围为9.6×10^(-7)~8.6×10^(-5)mol/L.初步探讨了电极反应机理.应用于秋水仙碱片剂和山慈菇等实际样品分析,可不经分离直接测定,方法简便迅速,测定结果与经典的方法基本一致.
:The differential pulse polarogrephic behaviour of colchicine and the conditions for its determination
are investigated. It is found that the well-defined peak is obtained by a B. R. buffer solution of PH 1. 81
with 0. 6 % (C4H9)4NCl as the supporting electrolyte,and an excellent linear relationship between the con-
centration and the peak current appears in the range from 9. 6×10-7to 8. 6×10-5mol/L The lower limit of
determination is 6. 0×10-7mol/L The method can be used conveniently for the direct determination of
colichicine in pharmaceutical preparations and Iphigenia indica Kunth et Benth. The results agree essentially
with those by classical ones.
出处
《武汉工程大学学报》
CAS
1991年第4期15-19,共5页
Journal of Wuhan Institute of Technology
关键词
秋水仙碱
测定
极谱法
Colchicine
Determination
Polarography
