Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1073, Issue 1-2, Pages 363-370Publisher
ELSEVIER
DOI: 10.1016/j.chroma.2004.09.016
Keywords
bisphenol A; molecularly imprinted polymers; surface modification; column switching HPLC
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Uniformly sized molecularly imprinted polymers (MIPs) for bisphenol A (BPA) with surface modification and immobilized intervals of functional monomers afforded by utilizing 4,4'-methylenebisphenol as a pseudo component have been prepared. MIPs for BPA were prepared using 4-vinyl pyridine immobilized in the most effective interval and ethylene glycol dimethacrylate as a functional monomer and cross-linking agent. respectively. Prepared MIPs showed significant selectivity for BPA retention and removal performance for interference in actual samples as the HPLC stationary phase compared to those of ordinary MIPs. These MIPs were employed as pretreatment media of column switching HPLC and the HPLC system provided a detection limit of 0.36 ppt when electrochemical detection was used. Actual samples, including Suwannee River natural organic matter (NOM), were applied and BPA was detected in the NOM even if widely used UV detection was employed. (c) 2004 Elsevier B.V. All rights reserved.
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