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Reference type: Journal
Authors: Miao SS, Wang HZ, Lu YC, Geng HR, Yang H
Article Title: Preparation of Dufulin imprinted polymer on surface of silica gel and its application as solid-phase extraction sorbent.
Publication date: 2014
Journal: Environmental Science: Processes & Impacts
Volume: 16
Issue: (4)
Page numbers: 932-941.
DOI: 10.1039/C3EM00519D

Abstract: A new molecularly imprinted polymer (MIP) based on silica-gel surface was developed using Dufulin (Duf) as a template, methacrylic acid (MAA) as a functional monomer, ethyleneglycol dimethacrylate (EGDMA) as a crosslinker, and azodiisobutyronitrile (AIBN) as an initiator. The synthetic samples were characterized by the techniques of Fourier transmission infrared spectrometry (FT-IR) and scanning electron microscope (SEM). Batch experiments were performed to evaluate adsorption isotherms, adsorption kinetics and selective recognition of the MIP. Binding experiments demonstrated that the MIP had a good adsorption capacity, fast mass transfer rate and high recognition selectivity to Dufulin. When the MIP was used as a solid-phase extraction (SPE) material, the recoveries of Dufulin for spiked water, soil and wheat samples were 88.98-102.16%, 85.31-99.57% and 87.84-100.19%, along with LOD of 0.0008 mg L-1, 0.010 mg kg-1 and 0.023 mg kg-1, respectively. Compared with direct determination of HPLC without MIP-SPE, the highly selective separation and enrichment of Dufulin from the complex environmental media can be achieved by the newly developed molecular imprinting at the surface of silica gel
Template and target information: Dufulin, Duf

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