掺杂法制备溴氰菊酯UCNP-Fe<sub>3</sub>O<sub>4</sub>-MIP传感材料及其传感体系研究

doi:10.11896/cldb.20040123

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Abstract IIn this work,the magnetic upconvertion molecularly imprinted polymer (UCNP-Fe₃O₄-MIP) was firstly prepared using deltamethrin as the template by doping method. Based on the sensing materials, a highly sensitive and highly selective sensing system was established for the efficient and rapid detection of deltamethrin in fruits and vegetables. The results showed that UCNP was a uniformly distributed hexagonal structure with a diameter of about 50 nm, and the UCNP-Fe₃O₄-MIP with a diameter of about 170 nm which was wrapped with a molecularly imprinted layer. The linear range and the detection limit of deltamethrin detection using this sensing system were 0.001—0.8 mg/L and 6.28×10^-4 mg/L, respectively. The spike recovery rate of grape was 89.59%—97.19% with RSD at the range of 6.08%—8.08% while the spike recovery rate of cabbage was 92.71%—103.82% with RSD at the range of 4.22%—8.93%. Compared with the gas chromatography method, no significant difference in accuracy but two orders of magnitude higher sensitivity was observed. Besides, the magnetic upconversion molecularly imprinted sensing material can be easily used and the detection time was only about 1 min, which make this method time-saving and inexpensive. Generally, the magnetic upconversion molecular imprinting sensing system established in this study could be used for the rapid and low-cost determination of deltamethrin with high sensitivity and specificity.

Key words： deltamethrin molecularly imprinted polymer upconversion fluorescent nanoparticle magnetic nanomaterials highly-sensitive

Published: 01 July 2021

CLC number:

TS207

Fund:Venture & Innovation Support Program for Chongqing Overseas Returnees (cx2018032), Chongqing Application Development (Key) Project (cstc2013yykfB80016).

About author:: Daoliang Li is majoring in food science in Southwest University since September 2016. He is focusing on the research of food safety and toxins detection.
Liang Ma received her Ph.D. degree from Chinese Academy of Agricultural Sciences. She is currently a professor and master supervisor, serving in College of Food Science, Southwest University. She is mainly engaged in the research of food safety and quality control as well as modern food testing technology. Her research focuses on the high-sensitivity identification and detection of biological toxins, pesticides and other small molecule pollutants; small rapid testing equipment such as quick testing products and sensors. She has presided over projects or sub-projects of the National Natural Science Foundation of China, the National Basic Research Program of China (973 Program), the National High Technology Research and Development Program of China (863 Program), the Chongqing Municipal Technology Innovation and Application Demonstration Project, the Chongqing Overseas Students Entrepreneurship Innovation Support Program (Excellent). As the first accomplisher, she granted five national invention patents and one national utility model patent.

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	LI Daoliang
	WANG Changchang
	GUO Ting
	ZHOU Hongyuan
	ZHANG Yuhao
	MA Liang

Cite this article:

LI Daoliang,WANG Changchang,GUO Ting, et al. Study on Preparation and Sensing System of Deltamethrin UCNP-Fe₃O₄-MIP Sensing Material Based on Doping Method[J]. Materials Reports, 2021, 35(12): 12169-12174.

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http://www.mater-rep.com/EN/10.11896/cldb.20040123 OR http://www.mater-rep.com/EN/Y2021/V35/I12/12169

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