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首页> 外文期刊>Electroanalysis >Voltammetric Determination of Isoniazid Drug in Various Matrix by Using CuOx Decorated MW-CNT Modified Glassy Carbon Electrode
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Voltammetric Determination of Isoniazid Drug in Various Matrix by Using CuOx Decorated MW-CNT Modified Glassy Carbon Electrode

机译：CUOX装饰MW-CNT改性玻碳电极伏安法测定各种基质中的异烟肼药物

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摘要

Copper oxide decorated multi-walled carbon nanotube (MWCNT) modified glassy carbon electrode (GCE) was prepared for determination of isoniazid (INZ) in various matrices. The electrochemical behavior of INZ was tested with the aid of Cyclic Voltammetry (CV) and quantitative experiments were performed by using Linear Sweep Voltammetry (LSV). Morphological and structural characterization of the modified electrode was performed by utilizing Scanning Electron Microscopy (SEM), X-Ray Photoelectron Spectroscopy (XPS) while electrochemical characterization was performed by using CV and Electrochemical Impedance spectroscopy (EIS). The proposed sensor exhibited well defined anodic peak at 0.30 V for INZ at pH 6.0 medium. Under the optimum conditions, a linear relation between INZ concentration and peak current was observed in the range of 2.0x10(-7) to 5.0x10(-5) M. Limit of detection was calculated as 1.0x10(-8) M and repeatability and accuracy was found as 5.60 % and 91.0 % for 5.0 10(-7) M INZ by using 3 successive measurement, respectively. Then, the analytic performance of the electrode developed was tested by analyzing commercial tablets, artificial human serum and urine samples. The results indicated that satisfactory recoveries was observed for all issue.
机译：制备氧化铜装饰的多壁碳纳米管（MWCNT）改性玻璃碳电极（GCE），用于测定各种基质中的异噻唑（Inz）。借助于循环伏安法（CV）测试inz的电化学行为，并通过使用线性扫描伏安法（LSV）进行定量实验。通过利用扫描电子显微镜（SEM），X射线光电子能谱（XPS）进行改性电极的形态学和结构表征，而通过使用CV和电化学阻抗光谱（EIS）进行电化学表征。所提出的传感器在pH6.0培养基下在0.30V下呈现出良好定义的阳极峰。在最佳条件下，在2.0×10（-7）至5.0×10（-5）M的范围内观察到Inz浓度和峰值电流之间的线性关系。检测限量计算为1.0×10（-8）m和可重复性通过使用3个连续测量，可分别发现5.0 10（-7）M inz的5.0％和91.0％的精度。然后，通过分析商业片，人造人血清和尿液样品来测试电极的分析性能。结果表明所有问题都观察到令人满意的回收率。

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