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Reference type: Journal
Authors: Xie CG, Li HF, Li SQ, Gao S
Article Title: Surface molecular imprinting for chemiluminescence detection of the organophosphate pesticide chlorpyrifos.
Publication date: 2011
Journal: Microchimica Acta
Volume: 174
Issue: (3)
Page numbers: 311-320.
DOI: 10.1007/s00604-011-0626-z

Abstract: We report on a surface molecular imprinting strategy for synthesizing core-shell particles whose shell is imprinted with chlorpyrifos (CPF). The particles were prepared by copolymerization of the methacryloyl groups on the surface of silica particles modified with 3-methacryloxypropyl trimethoxysilane a functional monomer and a cross-linking agent. The imprinted particles exhibit larger binding capacity, faster binding kinetics, and higher recognition selectivity for CPF. Combined with highly sensitive chemiluminescence assay, the method was applied to the determination of CPF with a detection limit of 0.92 nM which is about 2 orders of magnitude lower than that by conventional CL method. The method also displays repeatability for more than 200 times
Template and target information: chlorpyrifos, CPF
Author keywords: surface molecular imprinting, chemiluminescence, Chlorpyrifos, silica, Core-shell imprinted particle

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