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Reference type: Journal
Authors: Qiao FX, Gao MM, Yan HY
Article Title: Molecularly imprinted ionic liquid magnetic microspheres for the rapid isolation of organochlorine pesticides in environmental water.
Publication date: 2016
Journal: Journal of Separation Science
Volume: 39
Issue: (7)
Page numbers: 1310-1315.
DOI: 10.1002/jssc.201501165

Abstract: A new type of molecularly imprinted ionic liquid magnetic microspheres was synthesized by aqueous suspension polymerization, using 4,4'-dichlorobenzhydrol as a dummy template, and 1-allyl-3-ethylimidazolium hexafluorophosphate and methacrylic acid as co-functional monomers. The results of morphology and magnetic property evaluation of the obtained microspheres demonstrated that it was monodispersed spherical, possessed a rough surface, and an outstanding magnetic properties. Binding experiments revealed that it had a substantial adsorption capacity and strong recognition ability to organochlorine pesticides (OCPs) in aqueous solution. Then the microspheres were applied as an adsorbent of magnetic dispersive solid-phase extraction for the selective recognition and rapid determination of OCPs in environmental water. Under the optimum conditions, good linearity of the three types of OCPs (dicofol, tetradifon, and p,p'-dichlorodiphenyldichloroethane) was achieved in the range of 1.0-100 ng/mL (r 0.9994). The recoveries at three spiking levels ranged from 82.6 to 100.4% with the RSDs less than 6.9%
Template and target information: 4,4'-dichlorobenzhydrol, dummy template, organochlorine pesticides, OCPs, dicofol, tetradifon, p,p'-dichlorodiphenyldichloroethane
Author keywords: Dispersive solid-phase extraction, Ionic Liquids, Magnetic microspheres, Molecularly imprinted polymers, organochlorine pesticides


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