Development and application of a novel fluorescent nanosensor based on FeSe quantum dots embedded silica molecularly imprinted polymer for the rapid optosensing of cyfluthrin.

Autor: Li X; School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo 315211, PR China., Jiao HF; Ningbo Academy of Oceanology and Fishery, Ningbo 315012, PR China., Shi XZ; School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo 315211, PR China; Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo 315211, PR China. Electronic address: shixizhi@nbu.edu.cn., Sun A; School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo 315211, PR China., Wang X; School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo 315211, PR China., Chai J; School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo 315211, PR China., Li DX; School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo 315211, PR China., Chen J; School of Marine Sciences, Ningbo University, 818 Fenghua Road, Ningbo 315211, PR China.
Jazyk: angličtina
Zdroj: Biosensors & bioelectronics [Biosens Bioelectron] 2018 Jan 15; Vol. 99, pp. 268-273. Date of Electronic Publication: 2017 Jul 29.
DOI: 10.1016/j.bios.2017.07.071
Abstrakt: A novel molecularly imprinted silica layer appended to FeSe quantum dots (MIP-FeSe-QDs) was fabricated and utilized as a recognition element to develop a selective and sensitive fluorescent nanosensor for cyfluthrin (CYF) determination. The MIP-FeSe-QDs were characterized by fluorescence spectrometry, scanning electron microscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy. Excellent selectivity and high sensitivity of MIP-FeSe-QDs to CYF molecules were observed based on the fluorescence quenching of FeSe-QDs. Under optimal conditions, a good linear relationship was found between fluorescence quenching effect and increased CYF concentration within 0.010-0.20mg/L, with a correlation coefficient of 0.9911. The practicality of the developed sensor method for CYF detection in fish and sediment samples was further validated. Good recoveries ranging from 88.0% to 113.9% with<6.8% relative standard deviations were obtained. The detection limits of CYF in sediment and fish samples were 1.3 and 1.0µg/kg, respectively. This study established a novel, rapid fluorescent nanosensor detection method based on MIP-QDs for successfully analyzing CYF in fish and sediment samples.
(Copyright © 2017 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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