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首页> 外文期刊>Journal of Applied Electrochemistry >Amperometric determination of thiourea in alkaline media on a copper oxide-copper electrode
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Amperometric determination of thiourea in alkaline media on a copper oxide-copper electrode

机译：安培法测定氧化铜-铜电极上碱性介质中的硫脲

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A copper oxide-copper electrode was tested in alkaline media for the anodic electrochemical detection of thiourea (TU). The correlation between the history of the electrode and potential range for optimum sensing of the particular susceptible species was analysed by electrochemical and surface layer techniques. The chemical composition and morphology of surface layers were examined using the SEM/EDX technique. Electrochemical data were obtained by cyclic voltammetry (CV) and chronoamperometry (CA). The linear calibration plots for an amperometric detection of TU in a delimited potential range, using CV and CA, were obtained for the 1-8 mM concentration range. Some considerations on the correlation between TU, electrode formation and polarization conditions are proposed. A copper oxide-copper electrode can be used as an inexpensive alternative for amperometric determination of TU in alkaline media without fouling the electrode surface.
机译：在碱性介质中测试了铜氧化铜电极，用于硫脲（TU）的阳极电化学检测。通过电化学和表面层技术分析了电极的历史和用于最佳感测特定易感物种的电位范围之间的相关性。使用SEM / EDX技术检查了表面层的化学组成和形态。通过循环伏安法（CV）和计时电流法（CA）获得电化学数据。对于1-8 mM浓度范围，使用CV和CA获得了在有限电位范围内进行TU的安培检测的线性校准图。提出了关于TU，电极形成和极化条件之间的相关性的一些考虑。氧化铜-铜电极可以用作廉价的替代品，用于在碱性介质中安培测定TU，而不会污染电极表面。

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