Behavior of phenols and phenoxyacids on a bisphenol-A imprinted polymer. Application for selective solid-phase extraction from water and urine samples

A molecularly imprinted polymer (MIP), obtained by precipitation polymerisation with 4-vinylpyridine as the functional monomer, ethylene glycol dimethacrylate as cross-linker, and bisphenol-A (BPA) as template, was prepared. The binding site configuration of the BPA-MIP was examined using Scatchard...

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Bibliographic Details
Published in:International journal of molecular sciences 2011-05, Vol.12 (5), p.3322-3339
Main Authors: Herrero-Hernández, Eliseo, Carabias-Martínez, Rita, Rodríguez-Gonzalo, Encarnacion
Format: Article
Language:English
Subjects:
Benzhydryl Compounds - chemistry
Binding Sites
bisphenol-A
Cresols
Environmental Pollutants - analysis
Environmental Pollutants - chemistry
Herbicides
Humans
molecularly imprinted polymer
Nitrophenols
Particle Size
Pesticides
phenolic compounds
Phenols
Phenols - chemistry
phenoxyacid herbicides
Polymerization
Polymers
Polymers - chemistry
precipitation polymerisation
Pyridines
Rivers - chemistry
Scatchard analysis
Solid Phase Extraction - instrumentation
Solid Phase Extraction - methods
Urine
Urine - chemistry
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Summary:A molecularly imprinted polymer (MIP), obtained by precipitation polymerisation with 4-vinylpyridine as the functional monomer, ethylene glycol dimethacrylate as cross-linker, and bisphenol-A (BPA) as template, was prepared. The binding site configuration of the BPA-MIP was examined using Scatchard analysis. Moreover, the behaviour of the BPA-MIP for the extraction of several phenolic compounds (bisphenol-A, bisphenol-F, 4-nitrophenol, 3-methyl-4-nitrophenol) and phenoxyacid herbicides such as 2,4-D, 2,4,5-T and 2,4,5-TP has been studied in organic and aqueous media in the presence of other pesticides in common use. It was possible to carry out the selective preconcentration of the target analytes from the organic medium with recoveries of higher than 70%. In an aqueous medium, hydrophobic interactions were found to exert a remarkably non-specific contribution to the overall binding process. Several parameters affecting the extraction efficiency of the BPA-MIP were evaluated to achieve the selective preconcentration of phenols and phenoxyacids from aqueous samples. The possibility of using the BPA-MIP as a selective sorbent to preconcentrate these compounds from other samples such as urine and river water was also explored.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms12053322