Improvement on Analyte Extraction by Molecularly Imprinted Polymer Microspheres toward Enrofloxacin

Abstract

A collection of molecularly imprinted polymer microspheres (MIPMs) for Enrofloxacin (ENRO) were for the first time obtained through suspension polymerization in this work. The appropriate MIPMs used as specific SPE adsorbents were selected based on evaluation of binding capacities and morphology characterization. Combined with one simpler MISPE procedure for cleanup and preconcentration of ENRO in milk, further HPLC-UV analysis showed improved sensitivity of 10 µg kg⁻¹ than those reported in previous studies, with the desirable recoveries of 73.6–101.6%, proving that the developed MIPMs are applicable for extraction of ENRO during the process of sample preparation.

Keywords:

• Enrofloxacin
• Molecular imprinting
• Solid-phase extraction
• Suspension polymerization

The authors acknowledge the financial support from the National “863” High-Tech Project (2006AA10Z438), Shanghai Commission of Science and Technology (0652nm017, 07dz19508), the National Key Project of Scientific and Technical Supporting Programs Funded by Ministry of Science & Technology of China (NO.2006BAK02A09) and Shanghai Leading Academic Discipline Project (B205). We are grateful to the Instrumental Analysis Center of Shanghai Jiao Tong University, China for SEM photography.

Notes

^a n = 3.

∗These authors contributed equally to this work.