SYNTHESIS AND STUDIES ON THE ANALYTICAL FUNCTIONS OF A HIGHLY SELECTIVE SPECTROPHOTOMETRIC REAGENT 2-(8-QUINOLYLAZO)-5-N,N'-DIMETHYLAMINOBENZOIC ACID

被引：19

作者：

SHEN, HX ^{[1
]}

TANG, YP ^{[1
]}

XIAO, XL ^{[1
]}

ZHANG, SF ^{[1
]}

LIU, RX ^{[1
]}

机构：

[1] TIANJIN UNIV,DEPT CHEM,TIANJIN 300072,PEOPLES R CHINA

来源：

ANALYST | 1995年 / 120卷 / 05期

关键词：

SPECTROPHOTOMETRIC REAGENT; 2-(8-QUINOLYLAZO)-5-N; N'-DIMETHYLAMINOBENZOIC ACID; COBALT;

D O I：

10.1039/an9952001599

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new highly-selective chromogenic reagent, 2-(8-quinolylazo)-5-N,N'-dimethylaminobenzoic acid (QAMB) has been synthesized. In pH 4.0-8.0 medium, the reagent reacts only with cobalt or copper ions to form blue-green complexes, In alkaline medium, the reagent also reacts with nickel, mercury and palladium ions to form blue complexes, Therefore, QAMB may be the most selective among heterocyclic azo-chromogenic reagents, The physical acid chemical properties of QAMB and its colour-formation reaction with cobalt ions have been studied in detail. A new spectrophotometric method for the determination of cobalt in iron and steel samples has been developed.

引用

页码：1599 / 1602

页数：4

共 10 条

[1] SYNTHESIS AND SPECTROPHOTOMETRIC STUDY OF 2-[2-(3,5-DIBROMOPYRIDYL)AZO]-5-DIMETHYLAMINOBENZOIC ACID AS AN ANALYTICAL REAGENT - DETERMINATION OF NICKEL [J].