Electrochemical Behavior and Voltammetric Determination of Theophylline at a Glassy Carbon Electrode Modified with Graphene/Nafion

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An ultrasensitive voltammetric sensor, a simply coated graphene-Na?on suspension on a glass carbon electrode surface, was fabricated and used to investigate the electrochemical behavior of theophylline as described in the present paper. The results indicated that this voltammetric sensor exhibited a special recognition capacity to determine theophylline as well as having high sensitivity due to the excellent characteristics of graphene and the adsorption action of Nafion for theophylline. Under the selected condition using differential pulse voltammetry, the response peak currents had a linear relationship with the theophylline concentrations in two ranges from 1.0 × 10<sup>−8</sup> − 1.0 × 10<sup>−6</sup> and 2.0 × 10<sup>−6</sup> − 3.0 × 10<sup>−5</sup> mol L<sup>−1</sup> with a low detection limit of 6.0 × 10<sup>−9</sup> mol L<sup>−1</sup>. Moreover, according to the results obtained in the analysis of theophylline in two standard samples, it demonstrated the applicability of present method into real sample determination.

収録刊行物

  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

    Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 28(5), 497-502, 2012-05-10

    The Japan Society for Analytical Chemistry

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各種コード

  • NII論文ID(NAID)
    10030757609
  • NII書誌ID(NCID)
    AA10500785
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09106340
  • NDL 記事登録ID
    023614003
  • NDL 請求記号
    Z54-F482
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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