期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1449, 期 -, 页码 39-47出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2016.04.060
关键词
Magnetic metal-organic nanotubes; Yolk-shell magnetic microsphere; Gas chromatography-tandem mass spectrometry; Magnetic solid-phase extraction; Polychlorinated biphenyls
资金
- National Natural Science Foundation of China [21477068]
- Natural Science Foundation of Shandong Province [ZR2015YL003]
- Key Research and Development Program of Shandong Province [2015GSF117011]
A new type of three-dimensional, echinus-like magnetic Fe3O4 @ cobalt(II)-based metal-organic nanotube (Fe3O4 @ Co-MONT) yolk-shell microspheres, have been designed and synthesized for the first time. Fe3O4@Co-MONTs yolk-shell microspheres were characterized by scanning electron micrographs, transmission electron microscopy, Fourier transform infrared spectra, X-ray diffraction, and vibrating sample magnetometry. The feasibility of the new material for use as an absorbent was investigated for magnetic solid phase-extraction (MSPE) of polychlorinated biphenyls (PCBs) from environmental water samples and biological samples. The Plackett-Burman design and Box-Behnken design were used to determine and optimize the extraction parameters influencing the extraction efficiency through response surface methodology. Under the optimized conditions, the developed method showed good linearity within the range of 5-1000 ng L-1, low limits of detection (0.31-0.49 ng L-1), and good reproducibility (RSD<10%). The proposed method was successfully applied for the analysis of PCBs in real environmental water samples. These results demonstrated that Fe3O4 @ Co-MONTs is a promising adsorbent material for the MSPE of PCBs at trace levels from environmental water samples and biological samples. (C) 2016 Elsevier B.V. All rights reserved.
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