Smartphone-based molecularly imprinted sensors for rapid detection of thiamethoxam residues and applications.

In order to achieve rapid detection of thiamethoxam residues in mango, cowpea and water, this study modified the screen printed carbon electrode (SPCE) to make a specific molecular imprinting sensor (Thiamethoxam-MIP/Au/rGO/SPCE) for thiamethoxam. An integrated smartphone platform was also built for...

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Autores principales:	Sihua Peng, Aqiang Wang, Yuyang Lian, Xi Zhang, Bei Zeng, Qiulin Chen, Heming Yang, Jinlei Li, Limin Li, Jianguo Dan, Jianjun Liao, Shihao Zhou
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0145360590ea4a68886b41d2b444bd7e
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spelling	oai:doaj.org-article:0145360590ea4a68886b41d2b444bd7e2021-12-02T20:06:00ZSmartphone-based molecularly imprinted sensors for rapid detection of thiamethoxam residues and applications.1932-620310.1371/journal.pone.0258508https://doaj.org/article/0145360590ea4a68886b41d2b444bd7e2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0258508https://doaj.org/toc/1932-6203In order to achieve rapid detection of thiamethoxam residues in mango, cowpea and water, this study modified the screen printed carbon electrode (SPCE) to make a specific molecular imprinting sensor (Thiamethoxam-MIP/Au/rGO/SPCE) for thiamethoxam. An integrated smartphone platform was also built for thiamethoxam residue analysis. The performance of the complete system was analyzed by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The system was then applied for the rapid determination of thiamethoxam residues in water, mango and cowpea samples. The results showed that the molecular sensor showed good linearity in the range 0.5-3.0 μmol/L of thiamethoxam. The detection limit of thiamethoxam was 0.5 μmol/L. Moreover, the sensor had good reproducibility and anti-interference performance. The average recovery rates of the pesticide residues in water, mango and cowpea samples were in the range of 90-110% with relative standard deviations < 5%. The rapid detection system for thiamethoxam residue constructed in this study was simple, reliable, reproducible and had strong anti-interference. It has broad application prospects in the field detection of thiamethoxam residue, and serves as a valuable reference for the further development of rapid detection technology of pesticide residues in the field of environment and food safety.Sihua PengAqiang WangYuyang LianXi ZhangBei ZengQiulin ChenHeming YangJinlei LiLimin LiJianguo DanJianjun LiaoShihao ZhouPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 11, p e0258508 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sihua Peng Aqiang Wang Yuyang Lian Xi Zhang Bei Zeng Qiulin Chen Heming Yang Jinlei Li Limin Li Jianguo Dan Jianjun Liao Shihao Zhou Smartphone-based molecularly imprinted sensors for rapid detection of thiamethoxam residues and applications.
description	In order to achieve rapid detection of thiamethoxam residues in mango, cowpea and water, this study modified the screen printed carbon electrode (SPCE) to make a specific molecular imprinting sensor (Thiamethoxam-MIP/Au/rGO/SPCE) for thiamethoxam. An integrated smartphone platform was also built for thiamethoxam residue analysis. The performance of the complete system was analyzed by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The system was then applied for the rapid determination of thiamethoxam residues in water, mango and cowpea samples. The results showed that the molecular sensor showed good linearity in the range 0.5-3.0 μmol/L of thiamethoxam. The detection limit of thiamethoxam was 0.5 μmol/L. Moreover, the sensor had good reproducibility and anti-interference performance. The average recovery rates of the pesticide residues in water, mango and cowpea samples were in the range of 90-110% with relative standard deviations < 5%. The rapid detection system for thiamethoxam residue constructed in this study was simple, reliable, reproducible and had strong anti-interference. It has broad application prospects in the field detection of thiamethoxam residue, and serves as a valuable reference for the further development of rapid detection technology of pesticide residues in the field of environment and food safety.
format	article
author	Sihua Peng Aqiang Wang Yuyang Lian Xi Zhang Bei Zeng Qiulin Chen Heming Yang Jinlei Li Limin Li Jianguo Dan Jianjun Liao Shihao Zhou
author_facet	Sihua Peng Aqiang Wang Yuyang Lian Xi Zhang Bei Zeng Qiulin Chen Heming Yang Jinlei Li Limin Li Jianguo Dan Jianjun Liao Shihao Zhou
author_sort	Sihua Peng
title	Smartphone-based molecularly imprinted sensors for rapid detection of thiamethoxam residues and applications.
title_short	Smartphone-based molecularly imprinted sensors for rapid detection of thiamethoxam residues and applications.
title_full	Smartphone-based molecularly imprinted sensors for rapid detection of thiamethoxam residues and applications.
title_fullStr	Smartphone-based molecularly imprinted sensors for rapid detection of thiamethoxam residues and applications.
title_full_unstemmed	Smartphone-based molecularly imprinted sensors for rapid detection of thiamethoxam residues and applications.
title_sort	smartphone-based molecularly imprinted sensors for rapid detection of thiamethoxam residues and applications.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/0145360590ea4a68886b41d2b444bd7e
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Smartphone-based molecularly imprinted sensors for rapid detection of thiamethoxam residues and applications.

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