基于丝网印刷电极的农药残留快速检测技术研究进展

Research progress on rapid detection technology of pesticide residues based on screen-printed electrodes

农药残留问题严重影响食品质量与安全,亟需建立快速检测技术满足国内外食品安全标准。传统检测技术包括色谱检测法、免疫分析检测法、毛细管电泳法等依赖大型仪器,不适用于现场快速检测。由于大部分农药或其水解产物具有-NO_(2)、-OH、-C=O等电活性基团,可采用快速、灵敏的电化学检测技术来实现农药残留快速检测。其中,工作电极是核心元件,直接影响检测性能。丝网印刷电极作为一次性电极,制作简单、易于商业化,克服了传统电极的不足,有着广阔的应用前景。本文探讨了农药结构与电化学检测技术的联系,基于电化学检测原理,讨论了丝网印刷电极的制备、修饰,并总结了基于丝网印刷电极的电化学检测技术在农药残留检测中的应用,以期为丝网印刷电极在农药残留快速检测领域的研究提供参考。

The problem of pesticide residues seriously affects food quality and safety.It is urgent to establish rapid detection technologies to meet domestic and international food safety standards.Traditional detection techniques,including chromatographic detection,immunoassay detection,capillary electrophoresis,etc.,rely on large instruments and are not suitable for rapid on-site detection.Due to the presence of electroactive groups such as-NO_(2),-OH,-C=O in most pesticides or their hydrolysis products,fast and sensitive electrochemical detection techniques can be used to achieve rapid detection of pesticide residues.The working electrode is the core component,which directly affects the detection performance.Screen-printed electrodes,as disposable electrodes,are easy to produce and commercialize,overcoming the shortcomings of traditional electrodes and have broad application prospects.This article explored the relationship between pesticide structure and electrochemical detection technology,and based on the principle of electrochemical detection,discussed the preparation and modification of screen-printed electrodes.This article summarized the application of screen-printed electrodes in pesticide residue detection in order to provide reference for the rapid detection of pesticide residues using screen-printed electrodes.