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首页> 外文期刊>International Journal of Electrochemical Science >Voltammetric Determination of Dopamine Using Glassy Carbon Electrode Modified with ZnO/Al2O3 Nanocomposite
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Voltammetric Determination of Dopamine Using Glassy Carbon Electrode Modified with ZnO/Al2O3 Nanocomposite

机译：用ZnO / Al 2 3 纳米复合材料改性玻璃碳电极的伏安测定多巴胺

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摘要

In this work, a new modification strategy was reported to modify a glassy carbon electrode (GCE) based on ZnO/Al2O3 nanocomposite. This modified electrode was designed in order to be used as a sensitive and selective sensor towards detection of trace amount of dopamine (DA). The effective parameters on the optimal performances of the electrode such as pH of the test solution and the applied scan rate during the electrochemical process were also studied. This sensor responded linearly towards detection of dopamine within a wide range of 5.0×10?6-7.0×10?4 M with a low detection limit of 2.0×10? 6 M (pH=7.0), under the optimum conditions. Moreover, the electrode functioned in the determination of dopamine in real samples was satisfactory.
机译：在这项工作中，据报道了一种新的改进策略来改变基于ZnO / Al2O3纳米复合材料的玻碳电极（GCE）。设计了该改性电极，以便用作敏感和选择性传感器朝向痕量多巴胺（DA）的检测。还研究了电极的最佳性能的有效参数，例如测试溶液的pH和电化学过程中的施加扫描速率。该传感器线性地响应到多巴胺的宽范围内的5.0×10？6-7.0×10？4米，低检测限为2.0×10？在最佳条件下，6米（pH = 7.0）。此外，在真实样品中测定多巴胺中的电极令人满意。

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