title: Magnetic solid phase extraction and gas chromatography-mass spectrometrical analysis of sixteen polycyclic aromatic hydrocarbons.
abstract: Fluorenyl functionalized superparamagnetic core/shell magnetic nanoparticles (MNPs, Fe3O4@SiO2@Flu) were prepared and characterized by transmission electron microscope, X-ray diffraction and infrared spectroscopy. The MNPs having an average diameter of 200nm were then used as solid-phase extraction sorbent for the determination of 16 priority pollutants polycyclic aromatic hydrocarbons (PAHs) in water samples designated by United States Environmental Protection Agency (U.S. EPA). The main influencing parameters, including sorbent amount, desorption solvent, sample volume and extraction time were optimized. Analyses were performed on gas chromatography-mass spectrometry (GC-MS) using selected ion monitoring (SIM) mode. Method validation proved the feasibility of the developed sorbents for the quantitation of the investigated analytes at trace levels. Limit of detection ranging from 0.5 to 4.0ng/L were obtained. The repeatability was investigated by evaluating the intra- and inter-day precisions with relative standard deviations (RSDs) lower than 13.1%. Finally, the proposed method was successfully applied for the determination of PAHs in water samples with the recoveries in the range of 96.0-106.7%.
authors.affiliation: State Key Laboratory of Chemo/Biosensing & Chemometrics, College of Chemistry & Chemical Engineering, Hunan University, Changsha 410082, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Cai
authors.affiliation: Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Yan
authors.affiliation: State Key Laboratory of Chemo/Biosensing & Chemometrics, College of Chemistry & Chemical Engineering, Hunan University, Changsha 410082, China; Faculty of Chemical Technolology, Hanoi University of Industry, Hanoi, Viet Nam.
authors.forename: Manh
authors.initials: M
authors.lastname: NguyenVan
authors.affiliation: State Key Laboratory of Chemo/Biosensing & Chemometrics, College of Chemistry & Chemical Engineering, Hunan University, Changsha 410082, China.
authors.forename: Lijia
authors.initials: L
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Chemo/Biosensing & Chemometrics, College of Chemistry & Chemical Engineering, Hunan University, Changsha 410082, China. Electronic address: qycai0002@gmail.com.
authors.forename: Qingyun
authors.initials: Q
authors.lastname: Cai
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D057230:Limit of Detection; D060328:Magnetic Phenomena; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D012822:Silicon Dioxide / Q000737:chemistry; D052616:Solid Phase Extraction; D014481:United States; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D014867:Water; D012822:Silicon Dioxide
keywords: Fluorenyl functionalized MNPs; Polycyclic aromatic hydrocarbons; Water sample; π–π interaction