Developing fast and reliable methods with little sample preparation has become increasingly important for process monitoring and control. Electrochemical methods stand out for their low cost and instrumental simplicity. Furthermore, electrodes with nanoparticles can improve the method's sensitivity and specificity. This study developed carbon paste electrodes modified with nanoparticles of copper and iron. In addition, cyclic voltammetry was performed using a low-cost potentiostat designed for a Raspberry Pi single-board computer. As a proof of concept, the constructed electrodes were tested with ferrocyanide and applied to quantify sucrose, and their performance was compared to that of the glassy carbon electrode.

中文翻译：

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纳米颗粒修饰石墨电极的研制及其在蔗糖定量中的应用

开发快速可靠的方法，只需很少的样品制备，对于过程监测和控制变得越来越重要。电化学方法因其低成本和仪器简单性而脱颖而出。此外，带有纳米颗粒的电极可以提高该方法的灵敏度和特异性。本研究开发了用铜和铁纳米粒子改性的碳糊电极。此外，循环伏安法是使用专为 Raspberry Pi 单板计算机设计的低成本恒电位仪进行的。作为概念证明，构建的电极用亚铁氰化物进行了测试，并应用于量化蔗糖，并将它们的性能与玻碳电极的性能进行了比较。