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首页> 外文期刊>Journal of solid state electrochemistry >Amperometric sensor based on carbon nanotubes and electropolymerized vanillic acid for simultaneous determination of ascorbic acid, dopamine, and uric acid
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Amperometric sensor based on carbon nanotubes and electropolymerized vanillic acid for simultaneous determination of ascorbic acid, dopamine, and uric acid

机译：基于碳纳米管和电聚合香草酸的安培传感器，可同时测定抗坏血酸，多巴胺和尿酸

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摘要

This paper describes the development of a simple and efficient nanostructured platform based on multi-walled carbon nanotubes (MWCNT) functionalized with an in situ generated vanillic acid (VA) polymer. It was used as an analytical sensor for the simultaneous determination of ascorbic acid (AA), dopamine (DA), and uric acid (UA). The electropolymerization process of VA, performed on MWCNT-modified glassy carbon electrode, produces three redox systems based on quinone/hydroquinone functionality, as observed by cyclic voltammetry. The amperometric sensor has as figures of merit for the simultaneous determination of AA, DA, and UA the following values: for AA, a linear range of 5-120 mu M and detection limit of 3.5 mu M; for DA, a linear range of 5-120 mu M and detection limit of 4.5 mu M; and for UA, a linear range of 5-120 mu M and a detection limit of 1.5 mu M. From the obtained performance, the development of the platform based on MWCNT/poly-VA is justified for the simultaneous determination of AA, DA, and UA.
机译：本文介绍了一种简单高效的纳米结构平台的开发，该平台基于用原位生成的香草酸（VA）聚合物功能化的多壁碳纳米管（MWCNT）。它用作同时测定抗坏血酸（AA），多巴胺（DA）和尿酸（UA）的分析传感器。通过循环伏安法观察到，在MWCNT改性的玻碳电极上进行的VA的电聚合过程产生了三个基于醌/对苯二酚官能度的氧化还原体系。作为同时测定AA，DA和UA的优值，安培传感器具有以下值：对于AA，线性范围为5-120μM，检测极限为3.5μM。对于DA，线性范围为5-120μM，检测极限为4.5μM;对于UA，线性范围为5-120μM，检出限为1.5μM。从获得的性能来看，开发基于MWCNT / poly-VA的平台可同时测定AA，DA，和UA。

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