期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1218, 期 8, 页码 1115-1121出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2010.12.081
关键词
Water-compatible molecularly imprinted polymer; 1-(alpha-Methyl acrylate)-3-methylimidazolium bromide; Water-soluble acid dyes; Solid phase extraction; Strongly anion exchange solid phase extraction; Mixture anion exchange solid phase extraction
资金
- National Science Fund for Distinguished Young Scholars [50725825]
- National Natural Science Foundation of China [50978132]
- Natural Science Foundation of Jiangxi Province [2009GQH0083]
- Jiangxi Provincial Education Department [GJJ08200]
Novel water-compatible molecularly imprinted polymers were synthesized in methanol-water systems with Tratarzine as template and 1-(alpha-methyl acrylate)-3-methylimidazolium bromide (1-MA-3MI-Br) as functional monomer, which has pi-pi 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 mu g/L with the correlation coefficient of >0.999. The detection limits were in a range of 0.13-0.51 mu g/L for the water-soluble acid dyes in wastewater and 0.095-0.84 mu g/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. (C) 2010 Elsevier B.V. All rights reserved.
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