DETERMINATION OF ANILINE BY ADSORPTIVE STRIPPING VOLTAMMETRY USING AN IMPROVED DIAZOTIZATION AND COUPLING PROCEDURE - APPLICATION TO THE EVALUATION OF THE LIGHT DEGRADATION OF D-AND-C RED-NO-33 IN THE PRESENCE OF ASCORBIC-ACID

被引：7

作者：

RODRIGUES, JA

BARROS, AA

机构：

[1] Department of Chemistry, Faculty of Sciences, University of Porto

来源：

TALANTA | 1995年 / 42卷 / 07期

关键词：

D O I：

10.1016/0039-9140(95)01512-A

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method for the determination of aniline was developed, based on the diazotization and coupling of the aromatic amine to form an azo compound capable of being determined by adsorptive stripping voltammetry. A fast derivatization procedure was developed using 1-naftol as the coupling agent. A detection limit of 0.8 mu g/l was obtained for aniline, using an accumulation time of 2 min. The method was applied in the determination of the amount of aniline in the colouring matter D&C Red No. 33, after a liquid-liquid extraction with chloroform, before and after submitting the colouring matter to a process of degradation, using accelerated light conditions in the presence of ascorbic acid.

引用

页码：915 / 920

页数：6

共 11 条

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