Journal
TALANTA
Volume 128, Issue -, Pages 170-176Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2014.04.087
Keywords
Dummy template; Magnetic molecularly imprinted polymers; Solid-phase extraction; 4-nonylphenol
Categories
Funding
- National Natural Science Foundation of China [21005030, 21267010]
- Open Foundation of State Key Laboratory of Environmental Chemistry and Ecotoxicology [KF2011-25]
- Innovation Fund Designated for Graduate Students of Hunan Province [CX2013B415]
- Construct Program of the Key Discipline in Hunan Province [JSU0713Z31]
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In this paper, a highly selective sample clean-up procedure combining magnetic dummy molecular imprinting with solid-phase extraction was developed for rapid separation and determination of 4-nonylphenol (NP) in the environmental water samples. The magnetic dummy molecularly imprinted polymers (mag-DMIPs) based on multi-walled carbon nanotubes were successfully synthesized with a surface molecular imprinting technique using 4-tert-octylphenol as the dummy template and tetraethylorthosilicate as the cross-linker. The maximum adsorption capacity of the mag-DMIPs for NP was 52A mg g(-1) and it took about 20 min to achieve the adsorption equilibrium. The mag-DMIPs exhibited the specific selective adsorption toward NP. Coupled with high performance liquid chromatography analysis, the mag-DMIPs were used to extract solid-phase and detect NP in real water samples successfully with the recoveries of 88.6-98.1%. (C) 2014 Elsevier B.V. All rights reserved.
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