title: Aminosilanized magnetic carbon microspheres for the magnetic solid-phase extraction of bisphenol A, bisphenol AF, and tetrabromobisphenol A from environmental water samples.
abstract: Aminosilanized magnetic carbon microspheres as a novel adsorbent were designed and fabricated. The adsorbent was used for the magnetic solid-phase extraction of bisphenols at trace levels from environmental water samples before liquid chromatography with tandem mass spectrometry analysis. The structure, surface, and magnetic behavior of the as-prepared aminosilanized magnetic carbon microspheres were characterized by elemental analysis, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, powder X-ray diffraction, and vibrating sample magnetometry. The effects of the experimental parameters were investigated by the Plackett-Burman design, and then the parameters that were significant to the extraction efficiencies were optimized through a response surface methodology. The aminosilanized magnetic carbon microspheres exhibited high adsorption efficiency and selectivity for bisphenols. Under optimal conditions, low limits of detection (0.011-2.22 ng/L), and a wide linear range (2-3 orders of magnitude), good repeatability (4.7-7.8%, n = 5), and reproducibility (6.0-8.3%, n = 3) were achieved. The results demonstrate that the novel adsorbent possesses great potentials in the determination of trace levels of bisphenols in environmental water samples.
authors.affiliation: Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre, Shandong Academy of Sciences, Jinan, China.|College of Food Science and Engineering, Shandong Agricultural University, Taian, China.|Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
authors.forename: Sheng-Xiang
authors.initials: SX
authors.lastname: Gong
authors.affiliation: Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre, Shandong Academy of Sciences, Jinan, China.
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Wang
authors.affiliation: Shandong Provincial Environment Monitoring Center, Jinan, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.affiliation: College of Food Science and Engineering, Shandong Agricultural University, Taian, China.
authors.forename: Ming-Lin
authors.initials: ML
authors.lastname: Wang
authors.affiliation: Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre, Shandong Academy of Sciences, Jinan, China.
authors.forename: Xia
authors.initials: X
authors.lastname: Wang
authors.affiliation: Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
authors.forename: Zheng-Wu
authors.initials: ZW
authors.lastname: Wang
authors.affiliation: Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre, Shandong Academy of Sciences, Jinan, China.
authors.forename: Ru-Song
authors.initials: RS
authors.lastname: Zhao
keywords: aminosilanized magnetic carbon microspheres; bisphenols; liquid chromatography with tandem mass spectrometry; magnetic solid-phase extraction