DETERMINATION OF TRACE 6-AMINO PENICILLANIC ACID BY ADSORPTIVE STRIPPING VOLTAMMETRY

被引：0
|
作者：
HU, SS
ZHAO, ZF
机构：
来源：
ANALYTICAL LETTERS | 1991年 / 24卷 / 05期
关键词：
6-AMINO PENICILLANIC ACID (6-APA); ADSORPTIVE STRIPPING VOLTAMMETRY; DETERMINATION;
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The adsorptive stripping voltammetric behavior of 6-amino penicillanic acid (6-APA) is investigated and a sensitive adsorptive stripping voltammetry method for trace measurement of 6-APA is described. It is based on adsorptive accumulation of degradation product of 6-APA on the static mercury drop electrode, followed by stripping determination. Optimal conditions are a basic medium pH of 9.2 and an adsorption accumulation potential of -0.1 V (vs. Ag/AgCI); the stripping scan is done in the differential pulse mode. After accumulation for 2 min or 4 min, 4 x 10(-9) M or 1 x 10(-9) M 6- APA respectively, may be detected. The method has been developed for the assay of 6-APA in pharmaceutial sample.
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页码：827 / 836
页数：10
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