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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...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Xi'an Jiaotong University
2015
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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. |
format | Online Article Text |
id | pubmed-5762208 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Xi'an Jiaotong University |
record_format | MEDLINE/PubMed |
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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