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Reference type: Journal
Authors: Koohpaei AR, Shahtaheri SJ, Ganjali MR, Forushani AR, Golbabaei F
Article Title: Molecular Imprinted Solid Phase Extraction for Determination of Atrazine in Environmental Samples.
Publication date: 2008
Journal: Iranian Journal of Environmental Health Science & Engineering
Volume: 5
Issue: (4)
Page numbers: 283-296.
Alternative URL: http://journals.tums.ac.ir/abs.aspx?org_id=59&culture_var=en&journal_id=13&segment=en&issue_id=1233&manuscript_id=10918

Abstract: Solid phase extraction is one of the major applications of molecularly imprinted polymers fields for clean-up of environmental and biological samples namely molecularly imprinted solid-phase extraction. In this study, solid phase extraction using the imprinted polymer has been optimized with the experimental design approach for a triazine herbicide, named atrazine with regard to the critical factors which influence the molecular imprinted solid phase extraction efficiency such as sample pH, concentration, flow-rate, volume, elution solvent, washing solvent and sorbent mass. Optimization methods that involve changing one factor at a time can be laborious. A novel approach for the optimization of imprinted solid-phase extraction using chemometrics is described. The factors were evaluated statistically and also validated with spiked water samples and showed a good reproducibility over six consecutive days as well as six within-day experiments. Also, in order to the evaluate efficiency of the optimized molecularly imprinted solid-phase extraction protocols, enrichment capacity, reusability and cross-reactivity of cartridges have been also evaluated. Finally, selective molecularly imprinted solid-phase extraction of atrazine was successfully demonstrated with a recovery above 90% for spiked drinking water samples. It was concluded that the chemometrics is frequently employed for analytical method optimization and based on the obtained results, it is believed that the central composite design could prove beneficial for aiding the molecularly imprinted polymer and molecularly imprinted solid-phase extraction development
Template and target information: atrazine
Author keywords: Imprinted solid-phase extraction, chemometrics, herbicides, atrazine


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