INVESTIGATIONS ON ADSORPTION POTENTIOMETRY .4. DERIVATIVE ADSORPTION CHRONOPOTENTIOMETRY OF THE BISMUTH-2-(5'-BROMO-2'-PYRIDYLAZO)-5-DIETHYLAMINOPHENOL SYSTEM

被引：5

作者：

JIN, WR

WANG, JY

机构：

[1] Department of Chemistiy, Shandong University, Jinan, Shandong

来源：

ELECTROANALYSIS | 1994年 / 6卷 / 10期

关键词：

BISMUTH; ADSORPTION POTENTIOMETRY; 2-(5'-BROMO-2'-PYRIDYLAZO)-5-DIETHYLAMINOPHENOL;

D O I：

10.1002/elan.1140061013

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Derivative adsorption chronopotentiometry of the bismuth complex with 2-(5'-bromo-2'-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) has been described. The theory of derivative adsorption chronopotentiometry for the complex system and the method of determination of the composition, the conditional stability constant, as well as the number of electrons transferred by the electroactive complex adsorbed on the surface of the electrode have been discussed. In 0.025 mol/L NaOH, the linear range of the method is 2 x 10(-9) to 1.1 x 10(-7) mol/L for the preconcentration time of 120 seconds. This method has been used to determine the bismuth content in food.

引用

页码：882 / 886

页数：5

共 23 条

[1] DETERMINATION OF BISMUTH IN BLOOD URINE AND CEREBROSPINAL-FLUID BY FLAMELESS ATOMIC-ABSORPTION SPECTROPHOTOMETRY [J].