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首页> 外文期刊>Sensors Journal, IEEE >Study of Different Carbonaceous Materials as Modifiers of Screen-Printed Electrodes for Detection of Catecholamines
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Study of Different Carbonaceous Materials as Modifiers of Screen-Printed Electrodes for Detection of Catecholamines

机译：不同碳质材料作为丝网印刷电极检测儿茶酚胺的改性剂的研究

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摘要

This paper describes the sensing properties of carbon-based screen-printed electrodes modified with three types of carbonaceous materials: 1) carbon nanotubes; 2) carbon microfibers; and 3) graphene. The electrochemical signals of screen-printed electrodes toward catechol derivatives were registered. It was demonstrated that the screen-printed electrodes modified with carbon nanofibers show the best performances in terms of kinetics, stability, and the smallest detection limit for all the catechol derivatives analyzed. Experimental conditions on the sensing performance of the screen-printed electrodes were investigated and optimized. The sensors displayed linear responses to catecholamines over concentration ranges from 1 M to 60 M with detection limits in the range of 0.84–3.52 M. An array of electrodes was constructed using the signals of three types of electrodes. Principal component analysis of voltammetric data shows that the array was able to discriminate among catechol derivatives. The sensors were successfully applied to determine trace amounts of catecholamines in plasma.
机译：本文描述了用三种类型的碳质材料改性的碳基丝网印刷电极的传感特性：1）碳纳米管； 2）碳微纤维； 3）石墨烯。记录丝网印刷电极对儿茶酚衍生物的电化学信号。结果表明，用碳纳米纤维修饰的丝网印刷电极在动力学，稳定性和所有检出的邻苯二酚衍生物的最小检测限方面均表现出最佳性能。研究并优化了丝网印刷电极传感性能的实验条件。传感器在1 M至60 M的浓度范围内显示出对儿茶酚胺的线性响应，检测极限在0.84–3.52 M范围内。使用三种类型的电极信号构建电极阵列。伏安数据的主成分分析表明，该阵列能够区分邻苯二酚衍生物。该传感器已成功应用于确定血浆中儿茶酚胺的痕量。

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