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Abstract: Moleculary imprinted membranes with affinity properties for the pesticide dimethoate were prepared using polyacrylonitrile and its copolymers with two different functional monomers (methacrylic acid and acrylamide) ad hoc synthesized. Membranes were prepared via phase inversion technique using N-methylpyrrolidone as the solvent and adding the dimethoate to the casting solution. Membranes without the template were also prepared and used as reference (blank). To evaluate the influence of the two different functional monomers on the binding capacity of membranes toward the template, binding experiments in a dead-end filtration cell were performed. All imprinted membranes made from acrylonitrile copolymers exhibited good recognition properties. Among them, the membrane prepared with the copolymer containing methacrylic acid as functional group, showed the highest binding capacity. In all cases, blank membranes only showed a poor non-specific binding. The selectivity of the imprinted membranes was investigated performing binding experiments in the same operating conditions using the structural analogue triclorphon. Copyright of Desalination & Water Treatment is the property of Balaban Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Template and target information: dimethoate
Author keywords: Acrylic copolymers, binding capacity, Organophosphorus pestides, selectivity