期刊
JOURNAL OF SEPARATION SCIENCE
卷 38, 期 6, 页码 1046-1052出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201401142
关键词
Magnetic molecularly imprinted polymers; Plant extracts; Protocatechuic acid; Solid-phase extraction
资金
- National Natural Science Foundation of China [81227802]
- China Postdoctoral Science Foundation [2014M550501]
- Fundamental Research Funds for the Central Universities [xjj2014066]
In this study, highly selective core-shell molecularly imprinted polymers on the surface of magnetic nanoparticles were prepared using protocatechuic acid as the template molecule. The resulting magnetic molecularly imprinted polymers were characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and vibrating sample magnetometry. The binding performances of the prepared materials were evaluated by static and selective adsorption. The binding isotherms were obtained for protocatechuic acid and fitted by the Langmuir isotherm model and Freundlich isotherm model. Furthermore, the resulting materials were used as the solid-phase extraction materials coupled to high-performance liquid chromatography for the selective extraction and detection of protocatechuic acid from the extracts of Homalomena occulta and Cynomorium songaricum with the recoveries in the range 86.3-102.2%.
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