NDLI: Ionic liquid coated magnetic core/shell Fe3O4@SiO2 nanoparticles for the separation/analysis of linuron in food samples.

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Ionic liquid coated magnetic core/shell Fe3O4@SiO2 nanoparticles for the separation/analysis of linuron in food samples.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Zhu, Xiashi Chen, Jieping
Description	Author Affiliation: Chen J ( College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China.); Zhu X ( College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China. Electronic address: xszhu@yzu.edu.cn.)
Abstract	Three hydrophobic ionic liquids (ILs) including 1-butyl-3-methylimidazole hexafluorophosphate ([BMIM]PF6), 1-hexyl-3-methyl-imidazole hexafluorophosphate ([HMIM]PF6), and 1-octyl-3-methylimidazole hexafluoro-phosphate ([OMIM]PF6) coated Fe3O4@SiO2 nanoparticles with core-shell structure to prepare magnetic solid phase extraction agent (Fe3O4@SiO2@ILs) and establish a new method of magnetic solid phase extraction (MSPE) coupled with UV spectrometry for separation/analysis of linuron. The results showed that linuron was adsorbed rapidly by Fe3O4@SiO2@[OMIM]PF6 and eluanted by ethanol. Under the optimal conditions, preconcentration factor of the proposed method was 10-fold. The linear range, detection limit, correlation coefficient (R) and relative standard deviation (RSD) were found to be 0.04-20.00 µg mL(-1), 5.0 ng mL(-1), 0.9993 and 2.8% (n=3, c=4.00 µg mL(-1)), respectively. The Fe3O4@SiO2 nanoparticles could be used repeatedly for 10 times. This proposed method has been successfully applied to the determination of linuron in food samples.
ISSN	13861425
Volume Number	137
e-ISSN	18733557
Journal	Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Language	English
Publisher	Elsevier
Publisher Date	2015-02-25
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Food Analysis Methods Food Contamination Analysis Ionic Liquids Chemistry Linuron Magnetite Nanoparticles Adsorption Ferrosoferric Oxide Instrumentation Fruit Hydrogen-ion Concentration Imidazoles Osmolar Concentration Silicon Dioxide Solid Phase Extraction Spectrophotometry, Ultraviolet Temperature Thermogravimetry Vegetables Journal Article Research Support, Non-u.s. Gov't Discipline Spectroscopy
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Atomic and Molecular Physics, and Optics Analytical Chemistry Instrumentation

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