DETERMINATION OF EPHEDRINE IN HUMAN URINE BY SQUARE-WAVE VOLTAMMETRY WITH A SEPIOLITE-MODIFIED CARBON-PASTE ELECTRODE

被引：0
|
作者：
CHICHARRO, M [1 ]
ZAPARDIEL, A [1 ]
BERMEJO, E [1 ]
PEREZLOPEZ, JA [1 ]
HERNANDEZ, L [1 ]
机构：
[1] UNIV AUTONOMA MADRID, DEPT QUIM ANALIT & ANAL INSTRUMENTAL, E-28049 MADRID, SPAIN
来源：
ANALUSIS | 1995年 / 23卷 / 03期
关键词：
EPHEDRINE; MODIFIED ELECTRODES; SYMPATHOMIMETIC DRUGS; ADSORPTIVE STRIPPING SQUARE WAVE VOLTAMMETRY;
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An adsorptive stripping voltammetric method for determination of ephedrine with a modified carbon paste electrode with sepiolite is developed. Square wave voltammetry was used for the electrochemical measurement. Adsorption of the ephedrine on the electrode surface served as a preconcentration step and allows the determination of ephedrine in human urine in amounts lower than 45.0 mu g/ml with a detection limit of 3 mu g/ml (2 min, preconcentration time), a relative error not exceeding 7.0% and a relative standard deviation lower than 4.3% (n = 5).
引用
收藏
页码：131 / 134
页数：4
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