A triethylene glycol modified glassy carbon electrode （TEG-GCE） was fabricated by a controlled- potential electrolysis procedure. The performance of the film on the modified electrode surface was investigated by cyc...A triethylene glycol modified glassy carbon electrode （TEG-GCE） was fabricated by a controlled- potential electrolysis procedure. The performance of the film on the modified electrode surface was investigated by cyclic voltammetry with different probes. It was firstly found that while neutral pieces could penetrate the TEG film on the GCE surface, the ionic pieces, whatever it is anion or cation, was blocked by the film. This property was successfully used for determining dopamine （DA） in the presence of ascorbic acid （AA） with differential pulse voltammetry （DPV）.展开更多
基金financially supported by the Natural Science Foundation of Hebei Province of China(No.B2010000844)Research Foundation of Education Department of Hebei Province of China(No.ZH2012078)
文摘A triethylene glycol modified glassy carbon electrode （TEG-GCE） was fabricated by a controlled- potential electrolysis procedure. The performance of the film on the modified electrode surface was investigated by cyclic voltammetry with different probes. It was firstly found that while neutral pieces could penetrate the TEG film on the GCE surface, the ionic pieces, whatever it is anion or cation, was blocked by the film. This property was successfully used for determining dopamine （DA） in the presence of ascorbic acid （AA） with differential pulse voltammetry （DPV）.
