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首页> 外文期刊>International Journal of Electrochemical Science >Voltammetric Determination of 5-Amino-6-nitroquinoline at a Carbon Fiber Rod Electrode
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Voltammetric Determination of 5-Amino-6-nitroquinoline at a Carbon Fiber Rod Electrode

机译：碳纤维棒电极伏安法测定5-氨基-6-硝基喹啉

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摘要

Inexpensive carbon fiber rod electrodes (CFRE) in three diameters of 0.8 mm, 2 mm and 3 mm wereused for voltammetric determination of 5-amino-6-nitroquinoline (5A6NQ) based either on its anodicoxidation or cathodic reduction using direct current voltammetry and differential pulse voltammetry.CFRE is based on carbon fiber rod, which consists of lengthwise oriented long carbon fibers coatedfrom outer side by epoxy resin, connected to copper wire by conducting paint. The electrode materialis inexpensive, commercially available at very low cost and at various shapes and sizes and its surfaceis easy to regenerate. Electrochemical behavior of prepared electrodes was examined using typicalmodel redox system potassium ferrocyanide in aqueous supporting electrolytes. The best ratio betweensignal and noise was attained at CFRE with a 2 mm diameter. Practical applicability of these methodswas demonstrated on the determination of 5A6NQ at CFRE-2 mm in model samples of drinking andpond water. CFRE can serve as a good alternative to pencil electrodes or carbon paste electrodesespecially in cathodic voltammetry.
机译：廉价的碳纤维棒状电极（CFRE）分别使用0.8毫米，2毫米和3毫米三种直径进行阳极伏安法或使用直流伏安法和差动脉冲的阴极还原伏安法测定5-氨基-6-硝基喹啉（5A6NQ） CFRE是基于碳纤维棒的，它由纵向定向的长碳纤维组成，碳纤维从外侧涂有环氧树脂，并通过导电涂料连接到铜线。电极材料便宜，可以以非常低的成本和各种形状和尺寸购得，并且其表面易于再生。使用典型模型的氧化还原体系亚铁氰化钾在水性支持电解质中检查制备的电极的电化学行为。直径为2 mm的CFRE可以达到最佳的信号和噪声比。在饮用水和池塘水的模型样品中，在CFRE-2 mm下测定5A6NQ证明了这些方法的实际适用性。 CFRE可以替代铅笔电极或碳糊电极，特别是在阴极伏安法中。

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