title: Fe3O4@ionic liquid@methyl orange nanoparticles as a novel nano-adsorbent for magnetic solid-phase extraction of polycyclic aromatic hydrocarbons in environmental water samples.
abstract: 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%.
authors.affiliation: College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
authors.forename: Xiaofei
authors.initials: X
authors.lastname: Liu
authors.affiliation: College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China. Electronic address: luxin-chem@163.com.
authors.forename: Xin
authors.initials: X
authors.lastname: Lu
authors.affiliation: College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Huang
authors.affiliation: Department of Anatomy, Guilin Medical College, Guilin 541004, China.
authors.forename: Chengwei
authors.initials: C
authors.lastname: Liu
authors.affiliation: College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China. Electronic address: zhaoshulin001@163.com.
authors.forename: Shulin
authors.initials: S
authors.lastname: Zhao
mesh_terms: D000327:Adsorption; D001391:Azo Compounds / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D005290:Ferric Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D052578:Ionic Liquids / Q000737:chemistry*; D008280:Magnetics; D053758:Nanoparticles; D011083:Polycyclic Compounds / Q000302:isolation & purification*; D052616:Solid Phase Extraction / Q000379:methods*; D017550:Spectroscopy, Fourier Transform Infrared; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D001391:Azo Compounds; D005290:Ferric Compounds; D052578:Ionic Liquids; D011083:Polycyclic Compounds; D014874:Water Pollutants, Chemical; C000499:ferric oxide; C100258:methyl orange
keywords: Environmental water samples; Fe(3)O(4)@ionic liquid@methyl orange nanoparticles; Magnetic solid-phase extraction; Polycyclic aromatic hydrocarbons; Self-assembly