title: Fe(3)O(4)@MOF core-shell magnetic microspheres for magnetic solid-phase extraction of polychlorinated biphenyls from environmental water samples.
abstract: Fe3O4@MIL-100 core-shell magnetic microspheres were, for the first time, used as the sorbent for the magnetic solid-phase extraction (MSPE) of polychlorinated biphenyls at trace levels in environmental water samples. GC coupled with tandem MS was used for sample quantification and detection. The Box-Behnken design was used to determine the optimum extraction parameters influencing extraction efficiency through response surface methodology. Under the optimized conditions, the developed method showed good linearity within the range of 5-4000ngL(-1), low limits of detection (1.07-1.57ngL(-1); signal-to-noise ratio=3:1), and good extraction repeatability (relative standard deviation<12%; n=5). Environmental samples collected from the Yellow River, local lake, wastewater, and snow water were processed using the developed method. The results demonstrated that the Fe3O4@MOF core-shell magnetic microspheres are promising sorbents in the MSPE of aromatic pollutants from environmental water samples.
authors.affiliation: Key Laboratory of Applied Technology of Sophisticated Analytical Instruments, Shandong Academy of Sciences, Jinan, Shandong, China. xiangfchen@aliyun.com
authors.forename: Xiangfeng
authors.initials: X
authors.lastname: Chen
authors.forename: Ning
authors.initials: N
authors.lastname: Ding
authors.forename: Hao
authors.initials: H
authors.lastname: Zang
authors.forename: Hoisze
authors.initials: H
authors.lastname: Yeung
authors.forename: Ru-Song
authors.initials: RS
authors.lastname: Zhao
authors.forename: Chuange
authors.initials: C
authors.lastname: Cheng
authors.forename: Jianhua
authors.initials: J
authors.lastname: Liu
authors.forename: T-W Dominic
authors.initials: TW
authors.lastname: Chan
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D057230:Limit of Detection; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000302:isolation & purification*; D045483:Rivers / Q000737:chemistry; D059629:Signal-To-Noise Ratio; D052616:Solid Phase Extraction / Q000379:methods*; D062065:Wastewater / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D058185:Magnetite Nanoparticles; D009942:Organometallic Compounds; D011078:Polychlorinated Biphenyls; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Core–shell magnetic microsphere; GC–tandem MS; Magnetic solid-phase extraction; Metal–organic framework; Polychlorinated biphenyl