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《Chinese Journal of Analytical Chemistry》 2011-06
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Solid Phase Extraction of Ursolic Acid Using Imprinted Polymer Modified Multi-walled Carbon Nanotubes

LIU Xi1,ZHANG Zhao-Hui*1,2,ZHANG Hua-Bin1,HU Yu-Fang1,YANG Xiao1,NIE Li-Hua2 1(College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000) 2(State Key Laboratory of Chemo/Biosensing and Chemometrics,Hunan University,Changsha 410082)  
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.
【Fund】: 国家自然科学基金(No.21005030);; 湖南省教育厅重点项目(No.10A099);; 湖南省科技计划项目基金(No.2009FJ3009);; 湖南省大学生创新基金(No.JSU-CX-2010-46)资助
【CateGory Index】: TQ461
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