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Citation: WANG Zhen-Hui, ZHANG Ling-Ling. Electrochemical Behavior of Super-thin Carbon Paste Electrode and Its Analytical Application[J]. Chinese Journal of Applied Chemistry, ;2006, 23(5): 528-532. shu

Electrochemical Behavior of Super-thin Carbon Paste Electrode and Its Analytical Application

WANG Zhen-Hui ^, ,
ZHANG Ling-Ling

1.
College of Chemistry and Environmental Science, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007

Corresponding author: WANG Zhen-Hui,
Received Date: 10 July 2005
Available Online: 25 December 2005
Fund Project: 河南省自然科学基金(0311021000) (0311021000)

A novel nano-thickness carbon paste film electrode(INCPE) was constructed by inlaying carbon paste onto the surface of a nickel-chromium substrate.The surface structure of the INCPE was characterized by scanning electron microscopy(SEM), and the electrochemical behavior of the electrode was investigated by cyclic voltammetry,differential pulse voltammetry and multi-step semi-differential electrochemical method with vitamin B₆ as the reactant.Vitamin B₆ showed a very sensitive response at INCPE.In a phosphate buffer solution (pH=6.7), the oxidation peak current was proportional to the concentration of vitamin B₆ in the range of 1.0×10^-7~2.0×10^-4 mol/L with a correlation coefficient of 0.995 2.The detection limit of vitamin B₆ was 7.0×10^-8 mol/L(N/S=3).These results confirm that INCPE is stable,sensitive,inexpensive,convenient,and could be used as a working electrode.
- nanostructure carbon paste film,
- voltammetry,
- inlaid electrode,
- vitamin B₆
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