Hollow fiber membrane-protected molecularly imprinted microspheres for micro solid-phase extraction and clean-up of thiabendazole in citrus samples

In the present work, molecularly imprinted polymer (MIP) microspheres were packed in polypropylenehollow fiber (HF) segments for the micro solid-phase extraction and clean-up of thiabendazole (TBZ) incitrus samples. Experimental parameters affecting TBZ extraction were carefully optimized. Hollow fibermembrane was able to protect MIP beads from solid matrix allowing the extraction and clean-up withoutthe inclusion of further filtration and/or centrifugation steps. Under optimum experimental conditions,recoveries for TBZ at 0.83 mg kg−1concentration level ranged from 5.1 to 6.1%, depending upon thesample analyzed (orange or lemon peel samples), with relative standard deviations (RSDs) lower than4%. The limits of detection were 0.004 mg kg−1in orange and 0.009 mg kg−1in lemon, low enough for thedetermination of TBZ according to European Union legislation.In the present work, molecularly imprinted polymer (MIP) microspheres were packed in polypropylenehollow fiber (HF) segments for the micro solid-phase extraction and clean-up of thiabendazole (TBZ) incitrus samples. Experimental parameters affecting TBZ extraction were carefully optimized. Hollow fibermembrane was able to protect MIP beads from solid matrix allowing the extraction and clean-up withoutthe inclusion of further filtration and/or centrifugation steps. Under optimum experimental conditions,recoveries for TBZ at 0.83 mg kg−1concentration level ranged from 5.1 to 6.1%, depending upon thesample analyzed (orange or lemon peel samples), with relative standard deviations (RSDs) lower than4%. The limits of detection were 0.004 mg kg−1in orange and 0.009 mg kg−1in lemon, low enough for thedetermination of TBZ according to European Union legislation.In the present work, molecularly imprinted polymer (MIP) microspheres were packed in polypropylenehollow fiber (HF) segments for the micro solid-phase extraction and clean-up of thiabendazole (TBZ) incitrus samples. Experimental parameters affecting TBZ extraction were carefully optimized. Hollow fibermembrane was able to protect MIP beads from solid matrix allowing the extraction and clean-up withoutthe inclusion of further filtration and/or centrifugation steps. Under optimum experimental conditions,recoveries for TBZ at 0.83 mg kg−1concentration level ranged from 5.1 to 6.1%, depending upon thesample analyzed (orange or lemon peel samples), with relative standard deviations (RSDs) lower than4%. The limits of detection were 0.004 mg kg−1in orange and 0.009 mg kg−1in lemon, low enough for thedetermination of TBZ according to European Union legislation.

Bibliographic Details

Main Authors:	Díaz Álvarez, Miriam, Martín Esteban, Antonio
Format:	artículo biblioteca
Language:	English
Published:	Elsevier 2018
Subjects:	Micro-solid phase extraction, Hollow fiber membrane, Imprinted polymers, Thiabendazole,
Online Access:	http://hdl.handle.net/20.500.12792/944 http://hdl.handle.net/10261/290560
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