Dual-mode detection of fluorine-containing pesticides (bifenthrin, flufenoxuron, diflubenzuron) via ratiometric fluorescence and the Tyndall Effect of fluorescent organic nanoparticles

IF 5.4 2区医学 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Biomaterials Science & Engineering Pub Date : 2023-01-15 DOI:10.1016/j.foodchem.2022.134008

Yujiao Wang, Xiaoyan Cui, Runhua Lu, Haixiang Gao, Huafen Li, Wenfeng Zhou

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引用次数: 5

Abstract

The Tyndall Effect assay (TEA) has been applied into colorimetric metal ion detection since 2019. However, the TEA-based sensor for pesticide detection has never been reported till now. Herein, a facile fluorescent organic nanoparticle (FON)-based sensor is firstly developed for fluorine-containing pesticide detection through ratiometric fluorescence assay (FLA) and TEA. For FLA, the intensity of the second-order Tyndall scattering peak (STS_590nm) and the fluorescence peak of the FON-based sensor would increase and remain unchanged respectively when adding bifenthrin, flufenoxuron, and diflubenzuron. The detection limits were respectively 9.34, 6.91, and 3.60 μg/kg. For TEA, the increased STS_590nm intensity displayed a bright and visible light beam. An economical, simple, and portable device was then constructed to visually monitor the analytes. The sensor was successfully used to detect the analytes in teas through FLA and TEA with the recoveries and RSD ranging from 86.27–100.00 %, and 0.00–5.68 %, respectively.

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基于比例荧光和荧光有机纳米颗粒廷德尔效应的含氟农药(联苯菊酯、氟虫腈、二氟苯脲)双模检测

自2019年以来，廷德尔效应测定法(TEA)已应用于比色金属离子检测。然而，基于tea的农药检测传感器至今尚未见报道。本文首次开发了一种基于有机纳米粒子(FON)的荧光传感器，用于比例荧光法(FLA)和TEA检测含氟农药。对于FLA，当添加联苯菊酯、氟虫腈和二氟苯脲时，二级Tyndall散射峰(STS590nm)和氟基传感器的荧光峰强度分别增加和保持不变。检出限分别为9.34、6.91、3.60 μg/kg。对于TEA，增加的STS590nm强度显示出明亮的可见光束。然后构建了一种经济、简单、便携的设备来直观地监测分析物。该传感器通过FLA和TEA检测茶叶中的分析物，回收率为86.27 ~ 100.00%，RSD为0.005 ~ 5.68%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Biomaterials Science & Engineering Materials Science-Biomaterials

CiteScore

10.30

自引率

3.40%

发文量

413

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