期刊
JOURNAL OF SEPARATION SCIENCE
卷 39, 期 8, 页码 1480-1488出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201600026
关键词
Cinnamic acid; Magnetic molecularly imprinted polymers; Magnetic solid-phase extraction; Polydopamine
资金
- National Natural Science Foundation of China [21267010, 21565014]
- Specialty Plant Resources Development and Utilization of Wuling Mountain in Innovation Base for the Graduate Student Training of Hunan Provincial [2014KFXM10]
- Program of Science and Technology Innovative Research Team in Higher Educational Instituions of Hunan Province (Environment and Energy Materials and Deep Processing of Mineral Resources in Wuling Mountain)
We describe novel cinnamic acid polydopamine-coated magnetic imprinted polymers for the simultaneous selective extraction of cinnamic acid, ferulic acid and caffeic acid from radix scrophulariae sample. The novel magnetic imprinted polymers were synthesized by surface imprinting polymerization using magnetic multi-walled carbon nanotubes as the support material, cinnamic acid as the template and dopamine as the functional monomer. Themagnetic imprinted polymers were characterized by transmission electron microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy and vibrating sample magnetometry. The results revealed that the magnetic imprinted polymers had outstanding magnetic properties, high adsorption capacity, selectivity and fast kinetic binding toward cinnamic acid, ferulic acid and caffeic acid. Coupled with high-performance liquid chromatography, the extraction conditions of the magnetic imprinted polymers as a magnetic solid-phase extraction sorbent were investigated in detail. The proposed imprinted magnetic solid phase extraction procedure has been used for the purification and enrichment of cinnamic acid, ferulic acid and caffeic acid successfully from radix scrophulariae extraction sample with recoveries of 92.4-115.0% for cinnamic acid, 89.4-103.0% for ferulic acid and 86.6-96.0% for caffeic acid.
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