ADSORPTIVE STRIPPING VOLTAMMETRIC BEHAVIOR OF SULFAQUINOXALINE USING DIFFERENTIAL-PULSE AND SQUARE-WAVE TECHNIQUES

被引：5
|
作者：
BERZAS, JJ [1 ]
RODRIGUEZ, J [1 ]
LEMUS, JM [1 ]
CASTANEDA, G [1 ]
机构：
[1] UNIV CASTILLA LA MANCHA,FAC QUIM,DEPT QUIM ANALIT & TECNOL ALIMENTOS,E-13071 CIUDAD REAL,SPAIN
来源：
ANALYTICA CHIMICA ACTA | 1993年 / 273卷 / 1-2期
关键词：
POLAROGRAPHY; STRIPPING VOLTAMMETRY; VOLTAMMETRY; PHARMACEUTICALS; SULFAQUINOXALINE;
D O I：
10.1016/0003-2670(93)80179-O
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The adsorptive stripping voltammetric behaviour of sulphaquinoxaline (SQX) was studied by both square-wave and differential-pulse techniques, leading to two methods for its determination in aqueous samples and pharmaceutical formulations. The application of the square-wave mode for the stripping of adsorbed SQX proved to be more sensitive, yielding signals fifteen times larger than those obtained by applying a differential-pulse scan. The relative standard deviations obtained for concentration levels of SQX as low as 1.5 x 10(-6) M with square-wave and differential-pulse methods were 2.47% and 2.21% (n = 8), respectively.
引用
收藏
页码：369 / 375
页数：7
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