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Abstract: In this study, a molecularly imprinted polymer (MIP) that can selectively recognize both the trichlorfon and the structurally related compound of monocrotophos pesticides was prepared using mixtures of trichlorfon and monocrotophos as template molecules, methacrylic acid (MAA) as a functional monomer, and ethylene glycol dimethacrylate as a cross-linker. The polymerization conditions had an important influence on the adsorption ability of imprinted polymer. When the ratio of trichlorfon and monocrotophos was 1.5:1 (mol/mol), the MIP had high adsorption capacity. The prepared polymers were characterized by Fourier transform infrared spectroscopy and static and kinetic adsorption experiments. The results indicated that the P = O groups of trichlorfon and monocrotophos reacted with the -OH groups of MAA during the synthesis of MIP. The imprinted polymer exhibited good recognition ability and higher selectivity toward trichlorfon and monocrotophos than the structurally related pesticide compounds of acephate and methamidophos, and offered fast kinetics for solid phase by the MIP adsorption of trichlorfon and monocrotophos from liquid phase
Template and target information: dual template, trichlorfon, monocrotophos
Author keywords: characterization, Mixed template, molecular imprinting, Monocrotophos, Trichlorfon