Abstract: Molecularly imprinted microspheres (MIPMs) for recognition of omethoate and non-molecularly imprinted microspheres (NMIPMs) were synthesized by suspension polymerization. Methacrylic acid was used as functional monomer. Then, morphologies of MIPMs and NMIPMs were characterized by scanning electron microscopy (SEM), which showed that the diameters were between 5-25 μm. The isotherm binding of MIPMs and NMIPMs at different concentrations of omethoate demonstrated that MIPMs absorbed more substrates than NMIPMs. The data obtained in equilibrium adsorption experiment was processed by Scatchard analysis, which displayed that the MIPMs had two different affinity binding sites. The dissociation constants were calculated to be 0.131 and 5.178 mmol/L, and the maximum absorption quantities were estimated to be 3.890 and 62.232 μmol/g respectively. MIPMs also showed good selectivity for omethoate through the isotherm binding test of three other different substrates which were diomethoate, isocarbophos and phorate
Template and target information: omethoate
Author keywords: Absorption properties, molecularly imprinted microsphere, Omethoate, Solectivity properties, suspension polymerization

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