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Citation: Leng Zongzhou, Hu Xiaoya, Yang Gongjun, Jing Wei. DETERMINATION OF TRACE VERAPAMIL ON NAFION-MODIFIED GLASSY CARBON ELECTRODE[J]. Chinese Journal of Applied Chemistry, ;1993, 10(4): 95-97. shu

DETERMINATION OF TRACE VERAPAMIL ON NAFION-MODIFIED GLASSY CARBON ELECTRODE

1.
Department of Chemistry, Yangzhou Teachers College, 225002 Yangzhou

Received Date: 10 October 1992
Available Online: 30 March 1993
Fund Project:

Verapamil is an electroinactive cationic drug. This paper describes the method for determination of trace verapamil on the Nafion-modified glassy carbon electrode. The peak current of dopamine is decreased when verapamil is added to an electrolyte solution containing electroactive dopamine. A good linear relationship was found between the extent of the decrease in the peak current and the logarithmic concentration of verapamil in the range of 5×10^-7~1×10^-5mol/L. The detection limit of the method was 2.5×10^-7mol/L. The recovery was 96.2~105.7%, and the relative standard deviation was 3.2% (n=10).
- verapamil,
- Nafion-modified electrode,
- cathodic stripping voltammetry
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