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首页 > 过刊浏览>2025年第卷第1期 >154-164. DOI:10.12441/spyswjs.20240503001
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表面增强拉曼光谱法同时测定茶叶中2种新烟碱类农药
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1.江南大学食品学院，江苏 无锡 214122;2.普拉瑞思科学仪器(苏州)有限公司，江苏 苏州 215163;3.通标标准技术服务(青岛)有限公司，山东 青岛 266100

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通讯作者:

姚卫蓉（1970—），女，博士，教授，博士研究生导师，主要从事食品安全与质量控制研究。yaoweirongcn@jiangnan.edu.cn

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国家自然科学基金面上项目（32372421）。


Simultaneous Detection of Two Neonicotinoid Pesticides in Tea by Surface-enhanced Raman Spectroscopy
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1.School of Food Science and Technology, Jiangnan University, Wuxi 214122, China;2.Porlaris (Suzhou) Scientific Instruments Company, Suzhou 215163, China;3.SGS-CSTC Standards Technical Services Co., Ltd., Qingdao 266100, China

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    摘要:

    【目的】建立一种可以同时检测茶叶中2种新烟碱类农药（噻虫啉、啶虫脒）残留的方法。【方法】首先通过高斯软件计算噻虫啉和啶虫脒的理论拉曼光谱，结合普通拉曼光谱对2种农药进行峰位归属分析，分别以585、626 cm-1处的拉曼峰作为特征峰。进一步制备银包金纳米粒子（Au@AgNPs），将其作为表面增强拉曼光谱（SERS）的增强基底，并建立噻虫啉和啶虫脒同时检测标准曲线。【结果】确定最佳促凝剂为1.0 mol/L的Na2SO4溶液；以茶叶作为实际样品时，噻虫啉和啶虫脒的检测限分别为0.5 mg/kg和1.0 mg/kg，均低于国家标准规定的茶叶中残留限量；噻虫啉和啶虫脒的回收率为85.0%~106.9%，满足检测方法要求。【结论】该方法实现了茶叶中噻虫啉和啶虫脒的同时检测。

    Abstract:

    [Objective] The aim of the study is to establish a method for the simultaneous detection of residues of two neonicotinoid pesticides (thiacloprid and acetamiprid) in tea. [Method] Firstly, the theoretical Raman spectra of thiacloprid and acetamiprid were calculated with the Gaussian, and the chemical groups corresponding to the peaks of the two pesticides were determined by comparison with the conventional Raman spectra, with Raman peaks at 585 cm-1 and 626 cm-1 as the characteristic peaks, respectively. Silver-coated gold nanoparticles (Au@AgNPs) were further prepared as the enhanced substrate for surface-enhanced Raman spectroscopy (SERS). The standard curves for simultaneous detection of thiacloprid and acetamiprid were established. [Result] The optimal coagulant was 1.0 mol/L Na2SO4. The limits of detection of thiacloprid and acetamiprid in tea samples were 0.5 mg/kg and 1.0 mg/kg, respectively, which were lower than the residue limit in tea that was specified in the national standard. The recovery rates of thiacloprid and acetamiprid were within 85.0%~106.9%, which met the requirements of the detection method. [Conclusion] The established method achieves the simultaneous detection of thiacloprid and acetamiprid in tea.

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疏小惠,徐丽,赵翔,袁少锋,于航,马宁,常化仿,章祥,姚卫蓉.表面增强拉曼光谱法同时测定茶叶中2种新烟碱类农药[J].食品与生物技术学报,2025,(1):154-164.

SHU Xiaohui, XU Li, ZHAO Xiang, YUAN Shaofeng, YU Hang, MA Ning, CHANG Huafang, ZHANG Xiang, YAO Weirong. Simultaneous Detection of Two Neonicotinoid Pesticides in Tea by Surface-enhanced Raman Spectroscopy[J]. Journal of Food Science and Biotechnology,2025,(1):154-164.

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  • 收稿日期:2024-05-03
  • 最后修改日期:2024-05-23
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  • 在线发布日期: 2025-05-12
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