Atrazine Molecular Imprinted Polymers: Comparative Analysis by Far-Infrared and Ultraviolet Induced Polymerization
Atrazine molecular imprinted polymers (MIPs) were comparatively synthesized using identical polymer formulation by far-infrared (FIR) radiation and ultraviolet (UV)-induced polymerization, respectively. Equilibrium binding experiments were carried out with the prepared MIPs; the results showed that...
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doaj-24f89db9e7ff416ebff1b320a84c8bc02020-11-24T21:14:31ZengMDPI AGInternational Journal of Molecular Sciences1422-00672014-01-0115157458710.3390/ijms15010574ijms15010574Atrazine Molecular Imprinted Polymers: Comparative Analysis by Far-Infrared and Ultraviolet Induced PolymerizationJun Chen0Lian-Yang Bai1Kun-Feng Liu2Run-Qiang Liu3Yu-Ping Zhang4Pesticide Research Institute, Hunan Agricultural University, Changsha 410128, ChinaPesticide Research Institute, Hunan Agricultural University, Changsha 410128, ChinaSchool of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, ChinaPesticide Research Institute, Hunan Agricultural University, Changsha 410128, ChinaSchool of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, ChinaAtrazine molecular imprinted polymers (MIPs) were comparatively synthesized using identical polymer formulation by far-infrared (FIR) radiation and ultraviolet (UV)-induced polymerization, respectively. Equilibrium binding experiments were carried out with the prepared MIPs; the results showed that MIPuv possessed specific binding to atrazine compared with their MIPFIR radiation counterparts. Scatchard plot’s of both MIPs indicated that the affinities of the binding sites in MIPs are heterogeneous and can be approximated by two dissociation-constants corresponding to the high- and low-affinity binding sites. Moreover, several common pesticides including atrazine, cyromazine, metamitron, simazine, ametryn, terbutryn were tested to determine their specificity, similar imprinting factor (IF) and different selectivity index (SI) for both MIPs. Physical characterization of the polymers revealed that the different polymerization methods led to slight differences in polymer structures and performance by scanning electron microscope (SEM), Fourier transform infrared absorption (FT-IR), and mercury analyzer (MA). Finally, both MIPs were used as selective sorbents for solid phase extraction (SPE) of atrazine from lake water, followed by high performance liquid chromatography (HPLC) analysis. Compared with commercial C18 SPE sorbent (86.4%–94.8%), higher recoveries of atrazine in spiked lake water were obtained in the range of 90.1%–97.1% and 94.4%–101.9%, for both MIPs, respectively.http://www.mdpi.com/1422-0067/15/1/574atrazinemolecular imprinted polymersfar-infrared inducedultraviolet induced |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jun Chen Lian-Yang Bai Kun-Feng Liu Run-Qiang Liu Yu-Ping Zhang |
spellingShingle |
Jun Chen Lian-Yang Bai Kun-Feng Liu Run-Qiang Liu Yu-Ping Zhang Atrazine Molecular Imprinted Polymers: Comparative Analysis by Far-Infrared and Ultraviolet Induced Polymerization International Journal of Molecular Sciences atrazine molecular imprinted polymers far-infrared induced ultraviolet induced |
author_facet |
Jun Chen Lian-Yang Bai Kun-Feng Liu Run-Qiang Liu Yu-Ping Zhang |
author_sort |
Jun Chen |
title |
Atrazine Molecular Imprinted Polymers: Comparative Analysis by Far-Infrared and Ultraviolet Induced Polymerization |
title_short |
Atrazine Molecular Imprinted Polymers: Comparative Analysis by Far-Infrared and Ultraviolet Induced Polymerization |
title_full |
Atrazine Molecular Imprinted Polymers: Comparative Analysis by Far-Infrared and Ultraviolet Induced Polymerization |
title_fullStr |
Atrazine Molecular Imprinted Polymers: Comparative Analysis by Far-Infrared and Ultraviolet Induced Polymerization |
title_full_unstemmed |
Atrazine Molecular Imprinted Polymers: Comparative Analysis by Far-Infrared and Ultraviolet Induced Polymerization |
title_sort |
atrazine molecular imprinted polymers: comparative analysis by far-infrared and ultraviolet induced polymerization |
publisher |
MDPI AG |
series |
International Journal of Molecular Sciences |
issn |
1422-0067 |
publishDate |
2014-01-01 |
description |
Atrazine molecular imprinted polymers (MIPs) were comparatively synthesized using identical polymer formulation by far-infrared (FIR) radiation and ultraviolet (UV)-induced polymerization, respectively. Equilibrium binding experiments were carried out with the prepared MIPs; the results showed that MIPuv possessed specific binding to atrazine compared with their MIPFIR radiation counterparts. Scatchard plot’s of both MIPs indicated that the affinities of the binding sites in MIPs are heterogeneous and can be approximated by two dissociation-constants corresponding to the high- and low-affinity binding sites. Moreover, several common pesticides including atrazine, cyromazine, metamitron, simazine, ametryn, terbutryn were tested to determine their specificity, similar imprinting factor (IF) and different selectivity index (SI) for both MIPs. Physical characterization of the polymers revealed that the different polymerization methods led to slight differences in polymer structures and performance by scanning electron microscope (SEM), Fourier transform infrared absorption (FT-IR), and mercury analyzer (MA). Finally, both MIPs were used as selective sorbents for solid phase extraction (SPE) of atrazine from lake water, followed by high performance liquid chromatography (HPLC) analysis. Compared with commercial C18 SPE sorbent (86.4%–94.8%), higher recoveries of atrazine in spiked lake water were obtained in the range of 90.1%–97.1% and 94.4%–101.9%, for both MIPs, respectively. |
topic |
atrazine molecular imprinted polymers far-infrared induced ultraviolet induced |
url |
http://www.mdpi.com/1422-0067/15/1/574 |
work_keys_str_mv |
AT junchen atrazinemolecularimprintedpolymerscomparativeanalysisbyfarinfraredandultravioletinducedpolymerization AT lianyangbai atrazinemolecularimprintedpolymerscomparativeanalysisbyfarinfraredandultravioletinducedpolymerization AT kunfengliu atrazinemolecularimprintedpolymerscomparativeanalysisbyfarinfraredandultravioletinducedpolymerization AT runqiangliu atrazinemolecularimprintedpolymerscomparativeanalysisbyfarinfraredandultravioletinducedpolymerization AT yupingzhang atrazinemolecularimprintedpolymerscomparativeanalysisbyfarinfraredandultravioletinducedpolymerization |
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