期刊
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
卷 44, 期 12, 页码 1334-1338出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1023193508120045
关键词
square-wave voltammetry; adsorption; kanamycin; cathodic stripping voltammetry
资金
- Jiangsu Education Department of China [03KJDI 150277]
- Excellent Youth Fund of Yancheng Institute of Technology
A square-wave cathodic adsorptive stripping voltametric (SWCASV) method for the determination of kanamycin was developed on a thin-film mercury electrode (TFME). The optimal working conditions for the application of the method were found to be pH 8.0, provided by a Britton-Robinson (B. R.) buffer, and an adsorption potential of +0.30 V during 300 s. The equilibration time was applied during 10 s, and potential scans were performed at a scan rate of 40 mV/s, with a square-wave frequency of 100 Hz. The measuring-system response was linear over the kanamycin concentration range from 1.2 x 10(-9) to 5.0 x 10(-8) M and the detection limit achieved was 4.8 x 10(-10) M. The relative error and relative standard deviation obtained were 1.20 and 4.67%, respectively. The voltammetric procedure was applied successfully to give a rapid and precise assay of kanamycin in kanamycin sulfate injection form.
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