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A nano-magnetic electrochemical sensor for the determination of mood disorder related substances

机译：用于测定情绪障碍相关物质的纳米磁性电化学传感器

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摘要

The simultaneous electrochemical detection of mood disorder related substances, such as amitriptyline, melatonin and tryptophan, was successfully achieved by using a novel nano-magnetic electrochemical sensor design, encompassing Fe3O4 nanoparticles decorated with carbon quantum dots (MagNPs/Cdots). The magnetic composite was characterized using HR-TEM microscopy, XRD and Raman spectroscopy, and was applied onto a glassy carbon electrode using a miniature neodymium magnet. The determination of amitriptyline, melatonin and tryptophan was performed by monitoring oxidation promoted by MagNPs/Cdots in BR-buffer at pH 3.0, which proceeded according to well-defined differential pulse voltammetry peaks, with detection limits of 5.9, 4.4 and 4.2 nmol L-1, respectively. No significant interference was seen from biological interferents such as uric acid, ascorbic acid, dopamine, estriol and 17-estradiol. The magnetic hybrid material was highly stable in solution, opening exciting opportunities for the development of low cost and practical electrochemical sensors for the determination of mood disorder related substances in real clinical samples.
机译：通过使用一种新型纳米磁性电化学传感器设计成功实现了情绪障碍相关物质的同时电化学检测，例如氨基粒细胞，褪黑激素和色氨酸，包括用碳量子点装饰的Fe3O4纳米粒子（麦片/接触液）。使用HR-TEM显微镜，XRD和拉曼光谱，磁性复合物的特征在于使用微型钕磁铁施加到玻璃状碳电极上。通过监测PH 3.0的BR缓冲液中的麦片/分布在pH 3.0中的氧化氧化促进的氧化来进行氨基肽，褪黑激素和色氨酸的测定，其根据明确定义的差分脉冲伏安法峰进行，检测限为5.9,4.4和4.2 nmol L-分别为1。从生物干预液（如尿酸，抗坏血酸，多巴胺，雌醇和17-雌二醇）之类的生物干涉中没有显着干扰。磁性杂化材料在溶液中具有高度稳定的稳定性，开启令人兴奋的机会，用于开发低成本和实用的电化学传感器，用于测定真实临床样本中的情绪障碍相关物质。

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