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Reference type: Journal
Authors: Liu X, Zhang ZH, Zhang HB, Hu YF, Yang X, Nie LH
Article Title: Solid Phase Extraction of Ursolic Acid Using Imprinted Polymer Modified Multi-walled Carbon Nanotubes.
Publication date: 2011
Journal: Chinese Journal of Analytical Chemistry
Volume: 39
Issue: (6)
Page numbers: 839-845.
DOI: 10.1016/S1872-2040(10)60443-4
Alternative URL: http://en.cnki.com.cn/Article_en/CJFDTotal-FXHX201106017.htm

Abstract: A novel surface imprinting material based on multi-wall carbon nanotubes(MWNT/MIPs) modified with polyethylene glycol was successfully synthesized with a precipitation polymerization method by using ursolic acid(UA) as template,methacrylic acid(MAA) as functional monomer,and ethylene glycol dimethacrylate (EGDMA) as cross-linker.The MWNT/MIP was characterized by IR and scanning electron microscopy (SEM).The results showed that a stable,uniform imprinted materials layer was grafted on the surface of MWNT.The adsorption capacity of UA on MWNT/MIPs was measured by high performance liquid chromatography.A maximum apparent adsorption capacity of 100.1 μmol/g for the imprinted polymers toward UA was obtained.As solid phase extraction materials,the imprinted polymers extracted UA from actinidia chinensis planch successfully with the concentration enrichment factor of 5.35.
Template and target information: ursolic acid, UA
Author keywords: Multi-walled carbon nanotubes, imprinting, solid phase extraction, Ursolic acid

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