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Reference type: Journal
Authors: García-Fernández M, Díaz-Álvarez M, Martín-Esteban A
Article Title: Molecularly imprinted magnetic nanoparticles for the micro solid-phase extraction of thiabendazole from citrus samples.
Publication date: 2017
Journal: Journal of Separation Science
Volume: 40
Issue: (12)
Page numbers: 2638-2644.
DOI: 10.1002/jssc.201700321

Abstract: The preparation of molecularly imprinted core-shell magnetic nanoparticles and their subsequent use in the solid-phase extraction of thiabendazole from citrus sample extracts is described. Molecularly imprinted core-shell magnetic nanoparticles were prepared by the precipitation copolymerization of the imprinting polymerization mixture on the surface of vinyl-modified silica magnetic nanoparticles and were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The obtained molecularly imprinted core-shell magnetic nanoparticles exhibited a high selectivity for thiabendazole and were easily collected and separated by an external magnetic field without additional centrifugation or filtration steps. Under optimum conditions, a magnetic molecularly imprinted solid-phase extraction method was developed allowing the extraction of thiabendazole from citrus sample extracts and final determination by high-performance liquid chromatography with fluorescence detection. The detection limit was 0.2 mg/kg, far lower than the maximum residue limit established within the European Union for thiabendazole in citrus samples
Template and target information: thiabendazole
Author keywords: Citrus samples, magnetic nanoparticles, molecular imprinting, Thiabendazole


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