COMBINATION OF MICELLAR AND CHEMICAL CATALYSIS AS A MEANS OF ENHANCING THE SENSITIVITY OF CATALYTIC KINETIC DETERMINATIONS

被引：32

作者：

LUNAR, ML ^{[1
]}

RUBIO, S ^{[1
]}

PEREZBENDITO, D ^{[1
]}

机构：

[1] UNIV CORDOBA,FAC SCI,DEPT ANALYT CHEM,E-14004 CORDOBA,SPAIN

来源：

ANALYTICA CHIMICA ACTA | 1990年 / 237卷 / 01期

关键词：

Vanadium;

D O I：

10.1016/S0003-2670(00)83919-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The combined effects of micellar and chemical catalysis were studied to improve the features of catalytic kinetic determinations. The bromate oxidative coupling reaction of p-phenetidine with catechol, catalysed by vanadium(V), was studied in the presence and absence of micelles of cetylpyridinium chloride (CPC). This cationic surfactant increased the reaction rate, which in turn resulted in an increase in the sensitivity by an order of magnitude in the kinetic determination of vanadium(V). A detailed study of the kinetics of both reactions is reported. The mechanism by which CPC and vanadium(V) exert their action was elucidated and the role of micellar media in catalytic kinetic methods is discussed. © 1990.

引用

页码：207 / 214

页数：8