A Fluorescent Molecularly Imprinted Polymer-Coated Paper Sensor for On-Site and Rapid Detection of Glyphosate

Due to the massive use and abuse of pesticides, practices which have led to serious threats to human health, the research community must develop on-site and rapid detection technology of pesticide residues to ensure food safety. Here, a paper-based fluorescent sensor, integrated with molecularly imp...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2023-03, Vol.28 (5), p.2398
Main Authors: Wang, Meng, Qiu, Jun, Zhu, Chennuo, Hua, Yunyan, Yu, Jie, Jia, Lulu, Xu, Jianhong, Li, Jianlin, Li, Qianjin
Format: Article
Language:English
Subjects:
Automobile industry
Catalysts
Cereals
Coatings
Electrochemical Techniques - methods
Ethanol
Fluorescence
Food
Food contamination
Food matrix
Food safety
Glyphosate
Health aspects
Humans
Imprinted polymers
Limit of Detection
Medical research
molecular imprinting
Molecular Imprinting - methods
Molecularly Imprinted Polymers
Onsite
paper sensor
Pesticide Residues
Pesticides
Pesticides - analysis
Polymer coatings
Polymer industry
Polymerization
Polymers
Polymers - chemistry
Quantum dots
rapid detection
Reproducibility
Safety and security measures
Sensors
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Summary:Due to the massive use and abuse of pesticides, practices which have led to serious threats to human health, the research community must develop on-site and rapid detection technology of pesticide residues to ensure food safety. Here, a paper-based fluorescent sensor, integrated with molecularly imprinted polymer (MIP) targeting glyphosate, was prepared by a surface-imprinting strategy. The MIP was synthesized by a catalyst-free imprinting polymerization technique and exhibited highly selective recognition capability for glyphosate. The MIP-coated paper sensor not only remained selective, but also displayed a limit of detection of 0.29 µmol and a linear detection range from 0.5 to 10 µmol. Moreover, the detection time only took about 5 min, which is beneficial for rapid detection of glyphosate in food samples. The detection accuracy of such paper sensor was good, with a spiked recovery rate of 92-117% in real samples. The fluorescent MIP-coated paper sensor not only has good specificity, which is helpful to reduce the food matrix interference and shorten the sample pretreatment time, but it also has the merits of high stability, low-cost and ease of operation and carrying, displaying great potential for application in the on-site and rapid detection of glyphosate for food safety.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules28052398