The selectivity of triethylene glycol modified glassy carbon electrode for charged and uncharged pieces |
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| Authors: | Ju-Jie Ren Na Sun Min Cui Xue-Ping Ji |
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| Institution: | a Department of Chemistry, School of Sciences, Hebei University of Science and Technology, Shijiazhuang 050018, China;
b Department of Medical Chemistry, Hebei Medical University, Shijiazhuang 050017, China |
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| Abstract: | A triethylene glycol modified glassy carbon electrode (TEG-GCE) was fabricated by a controlledpotential 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). |
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| Keywords: | Triethylene glycol Glassy carbon electrode Dopamine Ascorbic acid Electrochemical modification |
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