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

Herrero-Hernández E, Carabias-Martínez R, Rodríguez-Gonzalo E - Int J Mol Sci (2011)

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: Institute of Natural Resources and Agrobiology (IRNASA-CSIC), 37008 Salamanca, Spain; E-Mail: eliseo.herrero@irnasa.csic.es.

ABSTRACT
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.

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Chemical structures of all the compounds studied.
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f1-ijms-12-03322: Chemical structures of all the compounds studied.

Mentions: An imprinted polymer was prepared by precipitation polymerization using BPA as a template and 4-vinylpyridine as the functional monomer, together with a corresponding non-imprinted polymer. This polymer has been developed for use as a sorbent for solid-phase extraction for the preconcentration of phenolic compounds and phenoxyacid herbicides in the presence of other xenobiotic compounds. The chemical structures of the compounds studied are shown in Figure 1.


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

Herrero-Hernández E, Carabias-Martínez R, Rodríguez-Gonzalo E - Int J Mol Sci (2011)

Chemical structures of all the compounds studied.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC3116193&req=5

f1-ijms-12-03322: Chemical structures of all the compounds studied.
Mentions: An imprinted polymer was prepared by precipitation polymerization using BPA as a template and 4-vinylpyridine as the functional monomer, together with a corresponding non-imprinted polymer. This polymer has been developed for use as a sorbent for solid-phase extraction for the preconcentration of phenolic compounds and phenoxyacid herbicides in the presence of other xenobiotic compounds. The chemical structures of the compounds studied are shown in Figure 1.

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: Institute of Natural Resources and Agrobiology (IRNASA-CSIC), 37008 Salamanca, Spain; E-Mail: eliseo.herrero@irnasa.csic.es.

ABSTRACT
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.

Show MeSH