COLOR-REACTION OF PLATINUM(II) WITH 5-(4-NITROPHENYLAZO)-8-(PARA-TOLUENESULPHONAMIDO)QUINOLINE AND ITS ANALYTICAL APPLICATIONS

被引：7

作者：

ZHAO, JW ^{[1
]}

XU, QH ^{[1
]}

机构：

[1] YUNNAN UNIV,DEPT CHEM,KUNMING 650091,PEOPLES R CHINA

来源：

TALANTA | 1991年 / 38卷 / 08期

关键词：

SPECTROPHOTOMETRIC DETERMINATION; SEPARATION;

D O I：

10.1016/0039-9140(91)80271-Z

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simple, rapid and sensitive spectrophotometric method has been developed for the determination of platinum. 5-(4-Nitrophenylazo)-8-(p-toluenesulphonamido)quinoline (NPTSQ) reacts with platinum(II) almost instantaneously in alkaline solution to form a violet-red 1:2 complex with an absorption maximum at 640 nm. Beer's law is obeyed over the concentration range 0-1-mu-g/ml platinum. The molar absorptivity is 1.37 x 10(5) l.mole-1.cm-1. The method has been used for the determination of microamounts of platinum in catalysts and anode slime.

引用

页码：909 / 912

页数：4