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首页> 外文期刊>Sensors and Actuators >Ultra-sensitive molecularly imprinted electrochemical sensor for patulin detection based on a novel assembling strategy using Au@Cu-MOF/N-GQDs
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Ultra-sensitive molecularly imprinted electrochemical sensor for patulin detection based on a novel assembling strategy using Au@Cu-MOF/N-GQDs

机译：基于使用Au @ Cu-Mof / N-GQDS的新型组装策略，超敏感的分子印迹电化学传感器。

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摘要

This study introduces an innovative procedure for the development of a molecularly imprinted electrochemical sensor for ultra-sensitive and selective detection of patulin. Firstly, the surface of a glassy carbon electrode (GCE) was decorated by nitrogen doped graphene quantum dots (N-GQDs) and AuNPs-functionalized Cu-metal organic framework (Au@Cu-MOF) and then a layer of molecularly imprinted polymer (MIP) was grown on Au@Cu-MOF/N-GQDs/GCE by electropolymerization. Electrochemical techniques were used to characterize and study the electrochemical behavior of the MIP/Au@Cu-MOF/N-GQDs/GCE, which exhibited a stable reference peak of Au@Cu-MOF at -0.11V after elution of patulin molecules. This peak current density decreased with rebinding of patulin molecules therefore it was considered as indicator signal. The designed MIP sensor presented a wide linear range from 0.001 to 70.0ng mL~(-1), and a low detection limit (0.0007 ng mL~(-1)). This newly developed method based on the synergistic effects of N-GQDs and Au@Cu-M0F combined with MIP technique offered outstanding selectivity, sensitivity, stability, and reproducibility. The good accuracy (recovery%, 97.6-99.4) and high precision (RSD%, 1.23-4.61) of this sensing system for analysis of apple juices proved the high potential of it for rapid and low cost determination of patulin compared to chromatographic methods.
机译：本研究介绍了用于开发分子印迹电化学传感器的创新过程，用于超敏感和选择性检测鉴定鉴定。首先，玻璃状碳电极（GCE）的表面由氮掺杂石墨烯量子点（N-GQD）和AuNPS官能化的Cu-金属有机骨架（Au @ Cu-Mof），然后是分子印迹聚合物（通过电聚合，MIP在Au @ cu-mof / n-gqds / gce上生长。电化学技术用于表征和研究MIP / Au @ Cu-Mof / N-GQDS / GCE的电化学行为，在洗脱鉴定分子后在-0.11V下表现出Au @ Cu-mof的稳定参考峰。这种峰值电流密度随着鉴定分子的重新剥离而降低，因此它被认为是指示器信号。设计的MIP传感器呈现宽线性范围为0.001至70.0ng ml〜（-1），低检测限（0.0007 ng ml〜（-1））。这种基于N-GQDS和AU @ Cu-M0F的协同效应的新开发方法与MIP技术相结合，提供了出色的选择性，灵敏度，稳定性和再现性。该传感系统的良好精度（回收％，97.6-99.4）和高精度（RSD％，1.23-4.61）用于分析苹果汁的分析，证明了与色谱法相比，鉴定髌粉的高潜力。

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  • 来源
    《Sensors and Actuators》 |2020年第9期|128219.1-128219.10|共10页
  • 作者

    Behnaz Hatamluyi; Majid Rezayi; Hamed Reza Beheshti; Mohammad Taher Boroushaki;

  • 作者单位

    Department of Pharmacology Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran Mashhad University of Medical Sciences Mashhad Iran;

    Medical Toxicology Research Center Mashhad University of Medical Sciences Mashhad Iran Department of Medical Biotechnology and Nanotechnology Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran;

    Testa Quality Control Laboratory Mashhad Iran;

    Department of Pharmacology Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran Pharmacological Research Center of Medicinal Plants Mashhad University of Medical Sciences Mashhad Iran;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Patulin; Molecularly imprinted polymer; Metal-organic framework; Nitrogen doped graphene quantum dots; Electrochemical sensor;

    机译：观察蛋白;分子印迹聚合物;金属 - 有机框架;氮掺杂石墨烯量子点;电化学传感器;

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