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Reference type: Journal
Authors: Luo XB, Zhan YC, Tu XM, Huang YN, Luo SL, Yan LS
Article Title: Novel molecularly imprinted polymer using 1-(α-methyl acrylate)-3-methylimidazolium bromide as functional monomer for simultaneous extraction and determination of water-soluble acid dyes in wastewater and soft drink by solid phase extraction and high performance liquid chromatography.
Publication date: 2011
Journal: Journal of Chromatography A
Volume: 1218
Issue: (8)
Page numbers: 1115-1121.
DOI: 10.1016/j.chroma.2010.12.081
Alternative URL: http://www.sciencedirect.com/science/article/B6TG8-51TGG4P-2/2/83ad6d69d8cca6de289428bf955d5679

Abstract: Novel water-compatible molecularly imprinted polymers were synthesized in methanol-water systems with Tratarzine as template and 1-(α-methyl acrylate)-3-methylimidazolium bromide (1-MA-3MI-Br) as functional monomer, which has π-π hydrophobic, hydrogen-bonding and electrostatic interactions with template molecule. 1-MA-3MI-Br molecularly imprinted polymers (1-MA-3MI-Br-MIPs) were used as selective sorbents for the solid-phase extraction (SPE) of water-soluble acid dyes from wastewater and soft drink. The good linearity of the method was obtained in a range of 5.0-2000 μg/L with the correlation coefficient of >0.999. The detection limits were in a range of 0.13-0.51 μg/L for the water-soluble acid dyes in wastewater and 0.095-0.84 μg/L for those in soft drink. The mean recoveries for the acid dyes are from 89.1% to 101.0% in spiked wastewater and 91.0-101.3% in spiked soft drink. Compared with strongly anion exchange solid phase extraction (SAX-SPE), mixture anion exchange solid phase extraction (MAX-SPE), and 1-MA-3MI-Br non-imprinted solid phase extraction (1-MA-3MI-Br-NISPE), almost all of the matrix interferences were removed by 1-MA-3MI-Br-MISPE, exhibiting higher selectivity, recovery and enrichment ability for the acid dyes and better baselines in the results of HPLC analysis
Template and target information: tartrazine
Author keywords: Water-compatible molecularly imprinted polymer, 1-(α-Methyl acrylate)-3-methylimidazolium bromide, Water-soluble acid dyes, solid phase extraction, Strongly anion exchange solid phase extraction, Mixture anion exchange solid phase extraction

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