Fluorescence paper-based sensor for visual detection of carbamate pesticides in food based on CdTe quantum dot and nano ZnTPyP.,Food Chemistry

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Fluorescence paper-based sensor for visual detection of carbamate pesticides in food based on CdTe quantum dot and nano ZnTPyP.
Food Chemistry ( IF 8.5 ) Pub Date : 2020-05-15 , DOI: 10.1016/j.foodchem.2020.127075
Hengye Chen ₁ , Ou Hu ₁ , Yao Fan ₂ , Lu Xu ₃ , Lei Zhang ₂ , Wei Lan ₁ , Ying Hu ₂ , Xingrui Xie ₁ , Lixia Ma ₁ , Yuanbin She ₂ , Haiyan Fu ₁

Affiliation

The needing of rapid and sensitive detection method for pesticides is increasing, to facilitate its detection without complicated instruments. Herein, a novel paper-based senor was developed for the visual detection of three carbamate pesticides (metolcarb, carbofuran, and carbaryl) based on CdTe quantum dots (QDs) and nano zinc 5, 10, 15, 20-tetra(4-pyridyl)-21H-23H-porphine (nano ZnTPyP) with a "turn-off-on" mode. This fluorescence sensing model could be applied in the highly selective and sensitive detection of carbamate pesticides both by fluorescence spectrometry or paper-based sensors. Based on the extracted RGB color values of paper, the partial least squares regression (PLSR) was used to accurately quantify the concentrations of carbamate pesticides in different food matrices (apple, cabbage and tea water). This method featured in high speed, low price and high accuracy, and provided a new strategy for the detection of food safety.

中文翻译：

基于CdTe量子点和纳米ZnTPyP的荧光纸基传感器，用于视觉检测食品中的氨基甲酸酯农药。

快速，灵敏的农药检测方法的需求在不断增加，以利于无需复杂仪器即可进行农药检测。本文中，基于CdTe量子点（QDs）和纳米锌5、10、15、20-四（4-吡啶基）的新型纸基传感器被开发出来，用于视觉检测三种氨基甲酸酯农药（灭草威，碳呋喃和西维因）。）-21H-23H-卟啉（纳米ZnTPyP），具有“关闭”模式。通过荧光光谱法或基于纸张的传感器，该荧光传感模型可用于氨基甲酸酯农药的高选择性和灵敏检测。基于提取的纸张RGB颜色值，使用偏最小二乘回归（PLSR）来准确定量不同食品基质（苹果，卷心菜和茶水）中氨基甲酸酯农药的浓度。

更新日期：2020-05-15

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