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Reference type: Journal
Authors: Du JJ, Gao RX, Yu H, Li XJ, Mu H
Article Title: Selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres.
Publication date: 2015
Journal: Journal of Pharmaceutical Analysis
Volume: 5
Issue: (3)
Page numbers: 200-206.
DOI: 10.1016/j.jpha.2014.10.004
Alternative URL: http://www.sciencedirect.com/science/article/pii/S2095177914000896

Abstract: Molecularly imprinted polymers for dimethoate recognition were synthesized by the precipitation polymerization technique using methyl methacrylate (MMA) as the functional monomer and ethylene glycol dimethacrylate (EGDMA) as the cross-linker. The morphology, adsorption and recognition properties were investigated by scanning electron microscopy (SEM), static adsorption test, and competitive adsorption test. To obtain the best selectivity and binding performance, the synthesis and adsorption conditions of MIPs were optimized through single factor experiments. Under the optimized conditions, the resultant polymers exhibited uniform size, satisfactory binding capacity and significant selectivity. Furthermore, the imprinted polymers were successfully applied as a specific solid-phase extractants combined with high performance liquid chromatography (HPLC) for determination of dimethoate residues in the cucumber samples. The average recoveries of three spiked samples ranged from 78.5% to 87.9% with the relative standard deviations (RSDs) less than 4.4% and the limit of detection (LOD) obtained for dimethoate as low as 2.3 μg/mL
Template and target information: dimethoate
Author keywords: molecularly imprinted polymer, precipitation polymerization, Dimethoate, Cucumber, HPLC


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