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Highly sensitive determination of perphenazine on a carbon nanocomposite ionic liquid electrode

机译：高灵敏度测定碳纳米复合离子液体电极上的乳酰碱

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摘要

Carbon nanomaterial-ionic liquid nanocomposites have provided an impressive class of materials expressly for electrochemical applications. In this work the electrocatalytic oxidation of perphenazine (PPZ) was studied at a carbon nanocomposite electrode, fabricated using multi-walled carbon nanotubes (MWCNT) and the ionic liquid 1-octylpyridinium hexaflourophosphate (OPFP). The surface of the proposed electrode was characterized by scanning electron microscopy. Adsorptive stripping voltammetry (AdSV) was applied as a highly sensitive method for the quantification of sub-micromolar amounts of PPZ. Various parameters were optimized for practical applications. It was found that the electrode showed a sensitive voltammetric response to PPZ. Cyclic voltammetry (CV) was also applied to obtain information about the reaction mechanism and for calculating the kinetic parameters. The oxidation was irreversible and exhibited adsorption controlled behavior. The electron transfer coefficient (alpha) value was found to be 0.57 from the slope of a Tafel plot. The anodic peak current was linear to PPZ concentration in the ranges of 5.0 x 10(-8) to 3.0 x 10(-5) M and 3 x 10(-5) to 1.5 x 10(-4) M, with correlation coefficients of 0.9987 and 0.9917, respectively. The detection limit was 2.3 x 10(-8) M. Also for the amperometric procedure a linear dynamic range of 1.0 x 10(-5) to 1.2 x 10(-4) M with a detection limit of 2.1 x 10(-6) M was obtained. The method was successfully applied for determination of PPZ content in pharmaceuticals and blood serum samples.
机译：碳纳米材料 - 离子液体纳米复合材料已经为电化学应用提供了一种令人印象深刻的材料。在这项工作中，在碳纳米复合电极上研究了含有多壁碳纳米管（MWCNT）和离子液体1-辛基吡啶六氟磷酸（OPFP）制造的碳纳米复合材料电极的电催化氧化。通过扫描电子显微镜表征所提出的电极的表面。吸附剥离伏安法（ADSV）用作高敏感的方法，用于定量pPZ的亚微溶剂量。针对实际应用优化了各种参数。发现电极显示对PPZ的敏感伏安响应。还应用循环伏安法（CV）以获得有关反应机制的信息和计算动力学参数。氧化是不可逆转的并且表现出吸附受控行为。发现电子传递系数（α）值是从Tafel图的斜率的0.57。阳极峰值电流在5.0×10（-8）至3.0×10（-5）m和3×10（-5）至1.5×10（-4）m的范围内的ppz浓度是线性的，具有相关系数分别为0.9987和0.9917。检测极限为2.3×10（-8）M.也适用于安培测定程序为1.0×10（-5）至1.2×10（-4）m的线性动态范围，检测限为2.1 x 10（-6 ）M是获得的。该方法成功地应用了药物和血清样品中PPZ含量的测定。

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  • 来源
    《RSC Advances》 |2015年第115期|共9页
  • 作者

    Fasihi Farshid; Farjami Fatemeh; Shafiee Gholam Hossein;

  • 作者单位

    Islamic Azad Univ Marvdasht Branch Dept Chem Marvdasht Iran;

    Islamic Azad Univ Marvdasht Branch Dept Chem Marvdasht Iran;

    Islamic Azad Univ Marvdasht Branch Dept Chem Marvdasht Iran;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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