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Selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres

Molecularly imprinted polymers for dimethoate recognition were synthesized by the precipitation polymerization technique using methyl methacrylate (MMA) as the functional monomer and ethylene glycol dimethacrylate (EGDMA) as the cross-linker. The morphology, adsorption and recognition properties wer...

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Detalles Bibliográficos
Autores principales: Du, Jiao-Jiao, Gao, Rui-Xia, Yu, Hu, Li, Xiao-Jing, Mu, Hui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Xi'an Jiaotong University 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5762208/
https://www.ncbi.nlm.nih.gov/pubmed/29403932
http://dx.doi.org/10.1016/j.jpha.2014.10.004
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author Du, Jiao-Jiao
Gao, Rui-Xia
Yu, Hu
Li, Xiao-Jing
Mu, Hui
author_facet Du, Jiao-Jiao
Gao, Rui-Xia
Yu, Hu
Li, Xiao-Jing
Mu, Hui
author_sort Du, Jiao-Jiao
collection PubMed
description Molecularly imprinted polymers for dimethoate recognition were synthesized by the precipitation polymerization technique using methyl methacrylate (MMA) as the functional monomer and ethylene glycol dimethacrylate (EGDMA) as the cross-linker. The morphology, adsorption and recognition properties were investigated by scanning electron microscopy (SEM), static adsorption test, and competitive adsorption test. To obtain the best selectivity and binding performance, the synthesis and adsorption conditions of MIPs were optimized through single factor experiments. Under the optimized conditions, the resultant polymers exhibited uniform size, satisfactory binding capacity and significant selectivity. Furthermore, the imprinted polymers were successfully applied as a specific solid-phase extractants combined with high performance liquid chromatography (HPLC) for determination of dimethoate residues in the cucumber samples. The average recoveries of three spiked samples ranged from 78.5% to 87.9% with the relative standard deviations (RSDs) less than 4.4% and the limit of detection (LOD) obtained for dimethoate as low as 2.3 μg/mL.
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spelling pubmed-57622082018-02-05 Selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres Du, Jiao-Jiao Gao, Rui-Xia Yu, Hu Li, Xiao-Jing Mu, Hui J Pharm Anal Original Article Molecularly imprinted polymers for dimethoate recognition were synthesized by the precipitation polymerization technique using methyl methacrylate (MMA) as the functional monomer and ethylene glycol dimethacrylate (EGDMA) as the cross-linker. The morphology, adsorption and recognition properties were investigated by scanning electron microscopy (SEM), static adsorption test, and competitive adsorption test. To obtain the best selectivity and binding performance, the synthesis and adsorption conditions of MIPs were optimized through single factor experiments. Under the optimized conditions, the resultant polymers exhibited uniform size, satisfactory binding capacity and significant selectivity. Furthermore, the imprinted polymers were successfully applied as a specific solid-phase extractants combined with high performance liquid chromatography (HPLC) for determination of dimethoate residues in the cucumber samples. The average recoveries of three spiked samples ranged from 78.5% to 87.9% with the relative standard deviations (RSDs) less than 4.4% and the limit of detection (LOD) obtained for dimethoate as low as 2.3 μg/mL. Xi'an Jiaotong University 2015-06 2014-11-07 /pmc/articles/PMC5762208/ /pubmed/29403932 http://dx.doi.org/10.1016/j.jpha.2014.10.004 Text en © 2014 Xi'an Jiaotong University http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).
spellingShingle Original Article
Du, Jiao-Jiao
Gao, Rui-Xia
Yu, Hu
Li, Xiao-Jing
Mu, Hui
Selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres
title Selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres
title_full Selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres
title_fullStr Selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres
title_full_unstemmed Selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres
title_short Selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres
title_sort selective extraction of dimethoate from cucumber samples by use of molecularly imprinted microspheres
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5762208/
https://www.ncbi.nlm.nih.gov/pubmed/29403932
http://dx.doi.org/10.1016/j.jpha.2014.10.004
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