Journal
TALANTA
Volume 119, Issue -, Pages 341-347Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2013.11.039
Keywords
Fe3O4@ionic liquid@methyl orange nanoparticles; Self-assembly; Magnetic solid-phase extraction; Polycyclic aromatic hydrocarbons; Environmental water samples
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Funding
- Natural Science Foundation of Guangxi Province, China [2013jjDA40029]
- Guangxi Province Health Department, China [Key. 2011]
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University), Ministry of Education of China [CMEMR2013-A-03]
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A novel nano-adsorbent, Fe3O4@ionic liquid@methyl orange nanoparticles (Fe3O4@IL@MO NPs), was prepared for magnetic solid-phase extraction (MSPE) of polycyclic aromatic hydrocarbons (PAHs) in environmental water samples. The Fe3O4@IL@MO NPs were synthesized by self-assembly of the ionic liquid 1-octadecyl-3-methylimidazolium bromide (C18mimBr) and methyl orange (MO) onto the surface of Fe3O4 silica magnetic nanoparticles, as confirmed by infrared spectroscopy, ultraviolet-visible spectroscopy and superconducting quantum interface device magnetometer. The extraction performance of Fe3O4@IL@MO NPs as a nano-adsorbent was evaluated by using five PAHs, fluorene (FLu), anthracene (AnT), pyrene (Pyr), benzo(a)anthracene (BaA) and benzo(a)pyrene (BaP) as model analytes. Under the optimum conditions, detection limits in the range of 0.1-2 ng/L were obtained by high performance liquid chromatography-fluorescence detection (HPLC-FLD). This method has been successfully applied for the determination of PAHs in environmental water samples by using the MSPE-HPLC-FLD. The recoveries for the five PAHs tested in spiked real water samples were in the range of 80.4-104.0% with relative standard deviations ranging from 2.3 to 4.9%. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
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