デノパミンの電気化学分析におけるグラッシーカーボン電極の陽極酸化処理効果

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書誌事項

タイトル別名
  • Effect of anodic pretreatment of glassy carbon electrodes on electrochemical detection of denopamine.
  • デノパミン ノ デンキ カガク ブンセキ ニ オケル グラッシー カーボン デ

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抄録

Anodically pretreated glassy carbon (GC) electrode was used in the electrochemical detection of denopamine (DP). The optimum condition for the pretreatment of the GC electrode was attained by anodic oxidation in 0.1M acetate buffer containing 2mM tetrabutylammonium bromide (pH 6.2) at+1.6V vs. SCE for 10min, followed by cathodic reduction in the same solution at -1.0V vs. SCE within a second. By this treatment, an approximate 9 fold increase was obtained in the peak current (IP). This increase was proportional to the concentration of DP from 0.1 to 1.5mM. The treated GC electrode gave reproducible IP with a relative standard deviation of 3.9% (n=6). The effect of this treatment was presumably due to the acceleration of oxidative reaction of DP with tertiary ammonium bromide which was incorporated to the surface film created in oxidation of acetic acid. The same treatment effect was observed in the other drug analysis.

収録刊行物

  • 分析化学

    分析化学 40 (4), 193-197, 1991

    公益社団法人 日本分析化学会

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