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Reference type: Journal
Authors: Díaz-Álvarez M, Turiel E
Article Title: Improved molecularly imprinted polymer grafted to porous polyethylene frits for the solid-phase extraction of thiabendazole from citrus sample extracts.
Publication date: 2015
Journal: Molecular Imprinting
Volume: 3
Issue: (1)
Page numbers: 1-7.
DOI: 10.1515/molim-2015-0001
Alternative URL: http://www.degruyter.com/view/j/molim.2015.3.issue-1/molim-2015-0001/molim-2015-0001.xml?format=INT

Abstract: In this paper, the improvement over a novel format for selective solid-phase extraction based on a molecularly imprinted polymer (MIP) is described. A small amount of MIP has been synthesized within the superficial pores of commercial polyethylene (PE) frits and attached to its surface using benzophenone (BP), a photo-initiator capable to start the polymerization from the surface of the support material. Key properties affecting the obtainment of a proper polymeric layer, such as polymerization time and kind of cross-linker were optimized. Prepared composite material was applied to the SPE of TBZ in real samples extracts, showing an impressive clean-up ability. Calibrations showed good linearity in the concentration range of 0.05–5.00 μg g-1, referred to the original solid sample, and the regression coefficients obtained were greater than 0.998. The calculated detection limit was 0.01 μg g-1, low enough to satisfactory analysis of TBZ in real samples. Mean recoveries were about 70 % at different concentration levels with RSDs always ranged below 15% in all the cases.
Template and target information: thiabendazole, TBZ
Author keywords: molecular imprinting, Solid-phase extraction, Frits, Thiabendazole, Citrus samples

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