title: Synthesis of g-C3N4/Fe3O4 nanocomposites and application as a new sorbent for solid phase extraction of polycyclic aromatic hydrocarbons in water samples.
abstract: An easy preparation of g-C3N4/Fe3O4 nanocomposites by chemical co-precipitation has been demonstrated. The as-prepared materials were characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis. The high affinity of g-C3N4 toward polycyclic aromatic hydrocarbons and the magnetic behavior of Fe3O4 were combined to provide an efficient and simple magnetic solid phase extraction (MSPE). The adsorption and desorption of polycyclic aromatic hydrocarbons on g-C3N4/Fe3O4 were examined. Different factors affecting the magnetic solid phase extraction of polycyclic aromatic hydrocarbons were assessed in terms of adsorption, desorption, and recovery. Under the optimized conditions, the proposed method showed good limits of detection (LOD, S/N=3) in the range of 0.05-0.1 ng mL(-1) and precision in the range of 1.8-5.3% (RSDs, n=3). This method was also successfully applied to the analysis of real water samples; good spiked recoveries over the range of 80.0-99.8% were obtained.
authors.affiliation: Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
authors.forename: Man
authors.initials: M
authors.lastname: Wang
authors.affiliation: Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
authors.forename: Shihai
authors.initials: S
authors.lastname: Cui
authors.affiliation: Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China. Electronic address: yangxiaodi@njnu.edu.cn.
authors.forename: Xiaodi
authors.initials: X
authors.lastname: Yang
authors.affiliation: Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China. Electronic address: biwentao@njnu.edu.cn.
authors.forename: Wentao
authors.initials: W
authors.lastname: Bi
mesh_terms: D000327:Adsorption; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D005618:Fresh Water / Q000737:chemistry*; D007700:Kinetics; D057230:Limit of Detection; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D009570:Nitriles / Q000737:chemistry*; D011084:Polycyclic Aromatic Hydrocarbons / Q000302:isolation & purification*; D052616:Solid Phase Extraction / Q000379:methods; D012997:Solvents; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D058185:Magnetite Nanoparticles; D009570:Nitriles; D011084:Polycyclic Aromatic Hydrocarbons; D012997:Solvents; D014874:Water Pollutants, Chemical; C011206:cyanogen; D052203:Ferrosoferric Oxide
keywords: Fe(3)O(4); Magnetic solid phase extraction; Polycyclic aromatic hydrocarbons; g-C(3)N(4)