Simultaneous Determination of Ascorbic Acid and Uric Acid by a New Modified Carbon Nanotube-Paste Electrode Using Chloromercuriferrocene

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  • AKBARI Reza
    Analytical Research Laboratory, Department of Chemistry, University of Sistan & Baluchestan
  • NOROOZIFAR Meissam
    Analytical Research Laboratory, Department of Chemistry, University of Sistan & Baluchestan
  • KHORASANI-MOTLAGH Mozhgan
    Inorganic Research Laboratory, Department of Chemistry, University of Sistan & Baluchestan
  • TAHERI Aboozar
    Analytical Research Laboratory, Department of Chemistry, University of Sistan & Baluchestan

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説明

The electrochemical behavior of ascorbic acid (AA) and uric acid (UA) at the surface of a multiwall carbon nanotube-paste electrode (MCNTPE) modified with incorporate chloromercuriferrocene (CMF) was investigated. The voltammetric studies using the MCNTPE/CMF electrode show two well-resolved anodic peaks for AA and UA with a potential difference of 430 mV, revealing the possibility of the simultaneous electrochemical detection of these compounds. The optimum analytical conditions were sought. Linear calibration plots were obtained over the range of 8.0 × 10−6 − 6.9 × 10−4 M and 2.4 × 10−6 − 6.9 × 10−4 M with detection limits (3σ) of 2.6 × 10−6 and 7.9 × 10−7 M for AA and UA, respectively. The electrode with the best conditions is applied for selective determination of AA and UA in complex biological and clinical matrices.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 26 (4), 425-430, 2010

    社団法人 日本分析化学会

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