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Evaluation of 2‐hydroxyethyl methacrylate as comonomer in the preparation of water‐compatible molecularly imprinted polymers for triazinic herbicides

In this work, the preparation and evaluation of water‐compatible molecularly imprinted polymers for triazines using 2‐hydroxyethyl methacrylate and methacrylic acid as comonomers is described. Four sets of molecularly imprinted and non‐imprinted polymers for propazine were prepared at varying monome...

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Autores principales: Díaz‐Álvarez, Myriam, Martín‐Esteban, Antonio, Turiel, Esther
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9546259/
https://www.ncbi.nlm.nih.gov/pubmed/35478484
http://dx.doi.org/10.1002/jssc.202200129
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author Díaz‐Álvarez, Myriam
Martín‐Esteban, Antonio
Turiel, Esther
author_facet Díaz‐Álvarez, Myriam
Martín‐Esteban, Antonio
Turiel, Esther
author_sort Díaz‐Álvarez, Myriam
collection PubMed
description In this work, the preparation and evaluation of water‐compatible molecularly imprinted polymers for triazines using 2‐hydroxyethyl methacrylate and methacrylic acid as comonomers is described. Four sets of molecularly imprinted and non‐imprinted polymers for propazine were prepared at varying monomer molar ratios (from 4:0 to 1:3), and evaluated for the recognition of several triazines directly in aqueous media. The evaluation was performed by loading 1 mL of an aqueous solution containing 500 ng of each selected triazine, washing with 500 μL of acetonitrile, and eluting with 500 μL of methanol followed by 2 × 500 μL of a solution of methanol containing 10% of acetic acid. Final determinations were performed by high‐performance liquid chromatography‐ultraviolet detection. Improvement in molecular recognition of triazines in water was obtained on those molecularly imprinted polymers incorporating 2‐hydroxyethyl methacrylate in 3:1 or 2:2 molar ratios, being the former selected as optimum providing recoveries for propazine up to 80%. A molecularly imprinted solid‐phase extraction protocol was developed to ensure that triazines‐selective recognition takes place inside selective binding sites in pure water media. Finally, the developed method was successfully applied to the determination of the selected triazines in environmental waters providing limits of detection from 0.16 and the 0.5 μg/L concentration range.
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spelling pubmed-95462592022-10-14 Evaluation of 2‐hydroxyethyl methacrylate as comonomer in the preparation of water‐compatible molecularly imprinted polymers for triazinic herbicides Díaz‐Álvarez, Myriam Martín‐Esteban, Antonio Turiel, Esther J Sep Sci Sample Preparation In this work, the preparation and evaluation of water‐compatible molecularly imprinted polymers for triazines using 2‐hydroxyethyl methacrylate and methacrylic acid as comonomers is described. Four sets of molecularly imprinted and non‐imprinted polymers for propazine were prepared at varying monomer molar ratios (from 4:0 to 1:3), and evaluated for the recognition of several triazines directly in aqueous media. The evaluation was performed by loading 1 mL of an aqueous solution containing 500 ng of each selected triazine, washing with 500 μL of acetonitrile, and eluting with 500 μL of methanol followed by 2 × 500 μL of a solution of methanol containing 10% of acetic acid. Final determinations were performed by high‐performance liquid chromatography‐ultraviolet detection. Improvement in molecular recognition of triazines in water was obtained on those molecularly imprinted polymers incorporating 2‐hydroxyethyl methacrylate in 3:1 or 2:2 molar ratios, being the former selected as optimum providing recoveries for propazine up to 80%. A molecularly imprinted solid‐phase extraction protocol was developed to ensure that triazines‐selective recognition takes place inside selective binding sites in pure water media. Finally, the developed method was successfully applied to the determination of the selected triazines in environmental waters providing limits of detection from 0.16 and the 0.5 μg/L concentration range. John Wiley and Sons Inc. 2022-05-03 2022-07 /pmc/articles/PMC9546259/ /pubmed/35478484 http://dx.doi.org/10.1002/jssc.202200129 Text en © 2022 The Authors. Journal of Separation Science published by Wiley‐VCH GmbH. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
spellingShingle Sample Preparation
Díaz‐Álvarez, Myriam
Martín‐Esteban, Antonio
Turiel, Esther
Evaluation of 2‐hydroxyethyl methacrylate as comonomer in the preparation of water‐compatible molecularly imprinted polymers for triazinic herbicides
title Evaluation of 2‐hydroxyethyl methacrylate as comonomer in the preparation of water‐compatible molecularly imprinted polymers for triazinic herbicides
title_full Evaluation of 2‐hydroxyethyl methacrylate as comonomer in the preparation of water‐compatible molecularly imprinted polymers for triazinic herbicides
title_fullStr Evaluation of 2‐hydroxyethyl methacrylate as comonomer in the preparation of water‐compatible molecularly imprinted polymers for triazinic herbicides
title_full_unstemmed Evaluation of 2‐hydroxyethyl methacrylate as comonomer in the preparation of water‐compatible molecularly imprinted polymers for triazinic herbicides
title_short Evaluation of 2‐hydroxyethyl methacrylate as comonomer in the preparation of water‐compatible molecularly imprinted polymers for triazinic herbicides
title_sort evaluation of 2‐hydroxyethyl methacrylate as comonomer in the preparation of water‐compatible molecularly imprinted polymers for triazinic herbicides
topic Sample Preparation
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9546259/
https://www.ncbi.nlm.nih.gov/pubmed/35478484
http://dx.doi.org/10.1002/jssc.202200129
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