Dufulin is a new a�aminophosphonates antiviral agent recently developed by Guizhou University of China. To determine Dufulin residue in environment, a new molecularly-imprinted polymer (MIP) based on silica�gel surface was developed using Dufulin as a template, methacrylic acid as a functional monomer, ethyleneglycol dimethacrylate as a crosslinker, and azodiisobutyronitrile as an initiator. The synthetic samples were characterized by fourier transmission infrared spectrometry and scanning electron microscope. Batch experiments were performed to evaluate adsorption isotherms, adsorption kinetics, and selective recognition of the MIP. Binding experiments demonstrated that the MIP had a good adsorption capacity, fast mass transfer rate, and high recognition selectivity to Dufulin. When the MIP was used as solid�phase extraction (SPE) materials, the highly selective separation and enrichment of Dufulin from environmental media of water, soil, and wheat can be achieved by the newly-developed MIP at the surface of silica gel.

Preparation of Dufulin imprinted polymer on surface of silica gel and its application as solid�phase extraction sorbent

248th National Meeting (2014)

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