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Citation: LIU Yunan, ZHANG Zhaohui, CHEN Xing, CHEN Hongjun, RAO Wei, CAI Rong. Preparation and Application of Melamine Magnetic Molecularly Imprinted Solid Phase Extraction Material[J]. Chinese Journal of Applied Chemistry, ;2013, 30(10): 1222-1230. doi: 10.3724/SP.J.1095.2013.30018 shu

Preparation and Application of Melamine Magnetic Molecularly Imprinted Solid Phase Extraction Material

LIU Yunan ^a,b, ,
ZHANG Zhaohui ^a,b,c ,
CHEN Xing ^a ,
CHEN Hongjun ^a ,
RAO Wei ^a ,
CAI Rong ^a

a. Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie 427000, China;
b. College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China;
c. State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China

Received Date: 8 January 2013
Revised Date: 11 March 2013

A novel melamine magnetic molecularly imprinted polymer(Fe₃O₄-GO@SiO₂@MIP) was prepared based on graphene oxide(GO) using melamine(MEL) as the template molecule,methacrylic acid(MAA) as the functional monomer and ethylene glycol dimethacrylate(EGDMA) as the cross-linker. The Fe₃O₄-GO@SiO₂@MIP was characterized by scanning electron microscope(SEM),transmission electron microscope(TEM),thermogravimetric analysis(TGA) and vibrating sample magnetometer(VSM).The results showed that MEL imprinted layer was grafted on magnetic GO surface successfully.The adsorption properties were investigated by high performance liquid chromatography,and the results demonstrated that the Fe₃O₄-GO@SiO₂@MIP exhibited specific selectivity towards MEL.The maximum adsorption capacity of Fe₃O₄-GO@SiO₂@MIP is 33.11 mg/g,and the selectivity factor of MEL towards CYR and CYA is 2.43 and 2.84,respectively.Combined with magnetic solid phase extraction(M-SPE) and high-performance liquid chromatography with the imprinted material as stationary phase,melamine from the sample solution of milk was successfully separated,enriched and detected.
- imprinted polymer,
- melamine,
- magnetic graphene oxide,
- magnetic solid phase extraction,
- highperformance liquid chromatography
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