DIFFERENTIAL ELECTROLYTIC POTENTIOMETRIC DETERMINATION OF CAFFEINE IN NONAQUEOUS MEDIA

被引：6

作者：

ABDENNABI, AMS

SULTAN, SM

机构：

[1] Chemistry Department, King Fahd University of Petroleum and Minerals, Dhahran

来源：

ELECTROANALYSIS | 1993年 / 5卷 / 08期

关键词：

CAFFEINE; ELECTROLYTIC POTENTIOMETRY; ANTIMONY ELECTRODE;

D O I：

10.1002/elan.1140050814

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The application of direct current differential electrolytic potentiometry (dc DEP) to the titration of caffeine in acetic anhydride-toluene mixture has been investigated. A very stable low current source has been constructed to polarize the antimony electrodes. The behavior of these electrodes during the titration of caffeine has been examined. Caffeine in commercial samples like tea, Pepsi as a beverage and Prontopyrin, a proprietary drug, was extracted in chloroform and determined by dc DEP.

引用

页码：709 / 712

页数：4

共 19 条

[1]

Abdennabi A.M.S., 1986, AJSE, V12, P82

[2] DIFFERENTIAL ELECTROLYTIC POTENTIOMETRY WITH PERIODIC POLARIZATION .27. DIRECT AND MARK-SPACE BIASED PERIODIC POLARIZATION IN SUBSTITUTION, ADDITION AND OXIDATION TITRIMETRY WITH DIBROMINE IN ANHYDROUS ACETIC-ACID [J].