title: Ultrathin-shell boron nitride hollow spheres as sorbent for dispersive solid-phase extraction of polychlorinated biphenyls from environmental water samples.
abstract: Boron nitride hollow spheres with ultrathin-shells were synthesized and used as sorbents for dispersive solid-phase extraction of aromatic pollutants at trace levels from environmental water samples. Polychlorinated biphenyls (PCBs) were selected as target compounds. Sample quantification and detection were performed by gas chromatography-tandem mass spectrometry. Extraction parameters influencing the extraction efficiency were optimized through response surface methodology using the Box-Behnken design. The proposed method achieved good linearity within the concentration range of 0.15-250 ng L(-1) PCBs, low limits of detection (0.04-0.09 ng L(-1), S/N=3:1), good repeatability of the extractions (relative standard deviation, <12%, n=6), and satisfactory recoveries between 84.9% and 101.0% under optimal conditions. Real environmental samples collected from rivers, local lakes, rain and spring waters were analyzed using the developed method. Results demonstrated that the hexagonal boron nitride-based material has significant potential as a sorbent for organic pollutant extraction from environmental water samples.
authors.affiliation: Key Laboratory of Applied Technology of Sophisticated Analytical Instruments, Shandong Academy of Sciences, Jinan, Shandong, PR China.
authors.forename: Meizhen
authors.initials: M
authors.lastname: Fu
authors.affiliation: Key Laboratory of Applied Technology of Sophisticated Analytical Instruments, Shandong Academy of Sciences, Jinan, Shandong, PR China.
authors.forename: Hanzhu
authors.initials: H
authors.lastname: Xing
authors.affiliation: Key Laboratory of Applied Technology of Sophisticated Analytical Instruments, Shandong Academy of Sciences, Jinan, Shandong, PR China. Electronic address: xiangfchen@aliyun.com.
authors.forename: Xiangfeng
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland.
authors.forename: Fan
authors.initials: F
authors.lastname: Chen
authors.affiliation: Department of Physics and Material Sciences, The City University of Hong Kong, Hong Kong Special Administrative Region.
authors.forename: Chi-Man Lawrence
authors.initials: CM
authors.lastname: Wu
authors.affiliation: Key Laboratory of Applied Technology of Sophisticated Analytical Instruments, Shandong Academy of Sciences, Jinan, Shandong, PR China.
authors.forename: Rusong
authors.initials: R
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Applied Technology of Sophisticated Analytical Instruments, Shandong Academy of Sciences, Jinan, Shandong, PR China.
authors.forename: Chuange
authors.initials: C
authors.lastname: Cheng
mesh_terms: D001896:Boron Compounds / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D011078:Polychlorinated Biphenyls / Q000302:isolation & purification*; D015203:Reproducibility of Results; D052616:Solid Phase Extraction / Q000379:methods*; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D001896:Boron Compounds; D014874:Water Pollutants, Chemical; D014867:Water; C017282:boron nitride; D011078:Polychlorinated Biphenyls
keywords: Boron nitride hollow spheres; Dispersive solid-phase extraction; Gas chromatography–tandem mass spectrometry; Polychlorinated biphenyls