Issue 21, 2013

An ionic liquid modified dummy molecularly imprinted polymer as a solid-phase extraction material for the simultaneous determination of nine organochlorine pesticides in environmental and food samples

Abstract

In this research, a novel dummy molecularly imprinted polymer (DMIP) was prepared through a sol–gel process using bisphenol A as the dummy template and the synthesized 1-(triethoxysilyl) propyl-3-aminopropyl imidazole bromide (SilprImN) as the functional monomer. The prepared SilprImN-DMIP was characterized by FT-IR and verified with a satisfied identification and penetration performance to bisphenol A in static and kinetic adsorption tests. Furthermore, this novel DMIP was applied as a solid-phase extraction (SPE) material to develop a method for the simultaneous determination of nine organochlorine pesticides (OCPs) in environmental and food samples coupled to a multi dimensional gas chromatograph-mass spectrometer system. The SPE parameters, including sample acidity (pH), sample loading rate, the eluent and elution volume, were optimized in detail to achieve a good extraction efficiency. In water, rice and tea leaf samples spiked with nine OCPs, the OCPs were simultaneously determined with suitable recoveries from 65.65% to 129.61% and a good relative standard deviation (n = 3) of 0.91%–11.47%, indicating the satisfied accuracy and precision of the developed method.

Graphical abstract: An ionic liquid modified dummy molecularly imprinted polymer as a solid-phase extraction material for the simultaneous determination of nine organochlorine pesticides in environmental and food samples

Supplementary files

Article information

Article type
Paper
Submitted
02 Jul 2013
Accepted
01 Sep 2013
First published
03 Sep 2013

Anal. Methods, 2013,5, 6128-6134

An ionic liquid modified dummy molecularly imprinted polymer as a solid-phase extraction material for the simultaneous determination of nine organochlorine pesticides in environmental and food samples

X. Gao, M. Pan, G. Fang, W. Jing, S. He and S. Wang, Anal. Methods, 2013, 5, 6128 DOI: 10.1039/C3AY41083H

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