Reusable molecularly imprinted electrochemiluminescence assay for kanamycin based on ordered mesoporous carbon loaded with indium oxide nanoparticles and carbon quantum dots
文献类型： 外文期刊
作者： Li, Shuhuai 1 ; Wu, Yuwei 1 ; Pang, Chaohai 1 ; Ma, Xionghui 1 ; Wang, Mingyue 1 ; Luo, Jinhui 1 ; Zhi, Xu 1 ; Li, Bei 2 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Minist Agr & Rural Affairs, Key Lab Qual & Safety Control Subtrop Fruits & Ve, Anal & Test Ctr,Hainan Prov Key Lab Qual & Safety, Haikou 571101, Hainan, Peoples R China
2.Key Lab Trop Fruits & Vegetables Qual & Safety St, Haikou 570311, Hainan, Peoples R China
关键词： Ordered mesoporous carbon; Indium oxide; Carbon quantum dots; Molecular imprinted sensor; Kanamycin
期刊名称：MICROCHIMICA ACTA （ 影响因子：6.408； 五年影响因子：5.888 ）
ISSN： 0026-3672
年卷期： 2022 年 189 卷 11 期
页码：
收录情况： SCI
摘要： A highly sensitive kanamycin electrochemiluminescence (ECL) switch sensor was constructed. A signal element consisting of ordered mesoporous carbon loaded with indium oxide nanoparticles/carbon quantum dots (OMC/In2O3/C-dots) was assembled on the surface of a gold electrode. Then, a molecularly imprinted polymer (MIP) was prepared on the modified electrode surface using kanamycin as the template molecule and o-aminophenol as the functional monomer. After kanamycin elution, the prepared sensor retained specific kanamycin recognition sites. OMC/In2O3 effectively amplified the ECL signal of the C-dots, thereby enhancing the detection sensitivity, whereas kanamycin quenched the signal. Therefore, the imprinted sites acted as a switch, providing a new method for detecting kanamycin. Under the optimal experimental conditions, the concentration of kanamycin was proportional to the degree of ECL quenching within a linear range of 5-4500 x 10(-12) mol L-1 at 0.8 V (vs. Ag/AgCl electrode electrode), and the detection limit was 5.8 x 10(-13) mol L-1. When applied to the detection of kanamycin in actual samples, such as chicken, duck, pork, and milk, the recovery for spiked samples was in the range 92.7-110%.
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