期刊
JOURNAL OF ANALYTICAL CHEMISTRY
卷 76, 期 4, 页码 430-441出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1061934821040110
关键词
GC− MS; magnetic solid phase extraction; Fe3O4@PDA@mSiO(2)@ZIF-8; phthalic acid esters; detection
资金
- Ningbo Natural Science Foundation [2018A610279]
- Research Funds of NBU [XYL18025]
- K. C. Wong Magna Fund in Ningbo University
A magnetic solid phase extraction platform was developed using zeolitic imidazolate framework-coated mesoporous magnetic nanoparticles for phthalates detection. The nanoparticles showed high efficiency and reusability in determining phthalates in human plasma samples, with potential for aromatic compounds detection applications.
In this work, zeolitic imidazolate framework (ZIF-8) coated mesoporous magnetic nanoparticles (Fe3O4@PDA@mSiO(2)@ZIF-8) were prepared through a facile and efficient strategy and used as a magnetic solid phase extraction platform for phthalates detection. Polydopamine (PDA) not only provides a hydrophilic layer, but also possesses pi electrons for aromatic compounds recognition; mSiO(2) endows the nanoparticles with large surface area and regular channels, which facilitates the rapid transport of phthalates. The prepared Fe3O4@PDA@mSiO(2)@ZIF-8 with imposed properties showed ultrahigh efficiency and reusability for phthalates determination in human plasma samples. The linearity range was 50-8000 ng/mL, limits of detection were between 50-80 ng/mL, the intra-day RSDs were lower than 4.8%, inter-day RSDs were lower than 6.7%, the recoveries ranged from 90 to 107%. The new prepared nanoparticles displayed potential performance for aromatic compounds detection.
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