Journal
MICROCHIMICA ACTA
Volume 185, Issue 1, Pages -Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-017-2593-5
Keywords
High-performance liquid chromatography; Magnetic solid phase extraction; Adsorption mechanism; Fourier transform infrared spectra; Powder X-ray diffraction; Transmission electron microscopy; X-ray photoelectron spectroscopy; Magnetic adsorbent. River water; Bottled juice
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Funding
- National Natural Science Foundation of China [31471643, 31571925, 31671930]
- Hebei Double First Class Discipline Construction Foundation for the Discipline of Food Science and Engineering of Hebei Agricultural University [2016SPGCA18]
- Natural Science Foundation of Hebei Province [B2016204136, B2016204146, B2017204025]
- Scientific and Technological Research Foundation of the Department of Education of Hebei Province [ZD2016085]
- Natural Science Foundation of Hebei Agricultural University [LG201607]
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A magnetic mesoporous poly(melamine-formaldehyde) composite (Fe3O4-mPMF) was prepared via grafting poly(melamineformaldehyde) onto the surface of amino-functionalized magnetite (Fe3O4) nanoparticles. The material was characterized by scanning electron micrography, transmission electron microscopy, X-ray diffraction, Fourier transform-infrared spectroscopy, nitrogen adsorption-desorption isotherms, and thermogravimetric analysis. It has a large surface area, a typical mesoporous structure, and a high thermal stability. It was employed as a magnetic sorbent for the solid phase extraction of the following endocrine disrupting chemicals (EDCs): Bisphenol A, 4-tert-butylphenol, 4-tert-octylphenol and nonylphenol. The EDCs were then quantified by HPLC. Under the optimized conditions, the response to the EDCs is linear in the range of 0.5-100 ng.mL(-1), and the limits of detection are 0.02-0.1 ng.mL(-1). The high adsorption capability of the Fe3O4-mPMF is mainly attributed to multiple interactions including pi-stacking, hydrogen bonding, and hydrophobic interactions. The method was applied to the extraction of EDCs from spiked river water and bottled juice samples. The results demonstrated that the Fe3O4-mPMF is an efficient adsorbent for the extraction of organic compounds with large conjugated pi-system, plenty of hydrogen-bonding sites, and strong hydrophobicity.
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