Solid‐phase extraction materials based on molecularly imprinted polymers for recognition of pyrethroids

Abstract

A novel recognition material for detection of kinds of pyrethroids was successfully synthesized by molecular imprinting technology. 3‐Phenoxybenzoic acid (PBA) usually could be the antigen to prepare the polyclonal antibody. In this work, the recognition material was prepared utilizing PBA as the template, methacrylicacid as the functional monomer and ethylene glycol dimethacrylate as the crosslinker. The recognition material was characterized by atomic force microscope, adsorption equilibrium and selectivity experiments. The results showed that the recognition material has been successfully prepared and recognized four pyrethroids (fenpropathrin, deltamethrin, fenvalerate, and cyhalothrin). The recognition material was utilized as sorbents in solid‐phase extraction for separation and detection of pyrethroids in practically samples. Under the optimal conditions, the recoveries were ranging from 74.3 to 111.0%. Therefore, novel materials for pyrethroids are very promising for future applications. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48919.

Molecularly Imprinted Polymers for Selective Sorption of Tricyclazole in Food

“…Molecular imprinting involves formation of complex in between target analyte (template) and functional monomers in porogenic solvent, followed by co‐polymerization of functional monomers with cross‐linkers to synthesize polymeric structure and subsequent removal of the template to prepare molecularly imprinted polymers (MIPs) with cavities complementary in size, shape and functional group of the template molecule, which can selectively rebind with the target analyte [10] . In literature, several reports are available on synthesis and utilization of MIPs for selective extraction of pesticides like organophosphates, [11] organochlorines, [12] pyrethroids [13] etc. We have earlier reported chitosan based magnetic molecularly imprinted polymer (MMIP) for selective detection of tricyclazole [14] .…”