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Reference type: Journal
Authors: Bakas I, Oujji NB, Moczko E, Istamboulie G, Piletsky S, Piletska E, Ait-Addi E, Ait-Ichou I, Noguer T, Rouillon R
Article Title: Computational and experimental investigation of molecular imprinted polymers for selective extraction of dimethoate and its metabolite omethoate from olive oil.
Publication date: 2013
Journal: Journal of Chromatography A
Volume: 1274
Page numbers: 13-18.
DOI: 10.1016/j.chroma.2012.11.061
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0021967312017943

Abstract: This work presents the development of molecularly-imprinted polymers (MIPs) for the selective extraction of dimethoate from olive oil. Computational simulations allowed selecting itaconic acid as the monomer showing the highest affinity towards dimethoate. Experimental validation confirmed modelling predictions and showed that the polymer based on IA as functional monomer and omethoate as template molecule displays the highest selectivity for the structurally similar pesticides dimethoate, omethoate and monocrotophos. Molecularly-Imprinted Solid Phase Extraction (MISPE) method was developed and applied to the clean-up of olive oil extracts. It was found that the most suitable solvents for loading, washing and elution step were respectively hexane, hexane-dichloromethane (85%:15%) and methanol. The developed MIPSE was successfully applied to extraction of dimethoate from olive oil, with recovery rates up to 94%. The limits of detection and quantification of the described method were respectively 0.012 and 0.05 μg g-1
Template and target information: omethoate, dimethoate
Author keywords: Computational modelling, molecularly imprinted polymer, Dimethoate, Olive oil.


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