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Reference type: Journal
Authors: Wu YT, Zhang YH, Zhang M, Liu F, Wan YC, Huang Z, Ye L, Zhou Q, Shi Y, Lu B
Article Title: Selective and simultaneous determination of trace bisphenol A and tebuconazole in vegetable and juice samples by membrane-based molecularly imprinted solid-phase extraction and HPLC.
Publication date: 2014
Journal: Food Chemistry
Volume: 164
Page numbers: 527-535.
DOI: 10.1016/j.foodchem.2014.05.071
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0308814614007778

Abstract: Nanofibrous molecularly imprinted membranes (nano-MIMs) with multi-analyte selectivity were prepared by encapsulating two types of molecularly imprinted polymer nanoparticles (MIP-NPs) into electrospun polyvinyl alcohol nanofibers. The obtained nano-MIMs maintained high molecular selectivity offered by each of the MIP-NPs. Nano-MIM embedding BPA-imprinted nanoparticles and TBZ-imprinted nanoparticles together showed the highest binding selectivity for acid bisphenol A (BPA) and basic tebuconazole (TBZ). This nano-MIM was used as affinity material of membrane-based molecularly imprinted solid-phase extraction (m-MISPE) to extract trace BPA and TBZ in vegetables and juices simultaneously. The recoveries of BPA and TBZ from different samples were higher than 70.33% with RSDs lower than 9.57%. m-MISPE gave better HPLC separation efficiencies and higher recoveries than conventional SPE based on C18/SCX. Multi-analyte selective m-MISPE combined with HPLC realized selective and simultaneous determination of several trace analytes with opposite charges/polarities in different food samples
Template and target information: bisphenol A, BPA, tebuconazole, TBZ
Author keywords: Molecularly imprinted polymers, Electrospun nanofibrous membrane, bisphenol A, Tebuconazole, Membrane-based molecularly imprinted solid-phase extraction, Vegetable and juice samples


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