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Reference type: Journal
Authors: Geramizadegan A, Amiri AA, Ghazanfari D
Article Title: Molecularly imprinted solid phase extraction for trace analysis of bentazon herbicide in surface water.
Publication date: 2015
Journal: Ludus Vitalis
Volume: XI
Issue: (2)
Page numbers: 9-14.
Alternative URL: http://ludusvitalis.org.mx/wordpress/wp-content/uploads/2015/08/9-14.pdf

Abstract: In this paper, a highly selective sample cleanup procedure combining molecular imprinting and solid phase extraction (MI-SPE) was developed for the isolation of bentazon in surface water. The molecularly imprinted polymer (MIP) was prepared using bentazon as the template molecule, methacrylic acid as the functional monomer and ethylene glycol dimethacrylate as the cross-linking monomer. The bentazon imprinted polymer was used as selective sorbent for the solid-phase extraction of bentazon from surface water. An off-line MI-SPE method followed by high-performance liquid chromatography was also established. In order to evaluate the applicability of the MIP for separation and determination of bentazon by HPLC, general parameters for SPE including the amount of loading solvents, washing solution and eluent and pH of the sample were optimized following a step by step approach. The polymer exhibited high adsorption capacity and good selective ability. It was shown that recoveries up to approximately 94% from spiked surface water samples could be obtained. It was demonstrated that the proposed MI-SPE-HPLC method could be applied to direct determination of bentazon in surface water.
Template and target information: bentazon
Author keywords: molecular imprinting, solid phase extraction, Bentazon


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