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Hg2+ ion-imprinted polymers sorbents based on dithizone-Hg2+ chelation for mercury speciation analysis in environmental and biological samples
Zhang, Zhong1,4; Li, Jinhua1; Song, Xingliang2; Ma, Jiping3; Chen, Lingxin1; Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Environm Proc, Key Lab Coastal Environm Processes & Ecol Remedia, Yantai 264003, Peoples R China. lxchen@yic.ac.cn
2014
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume4Issue:87Pages:46444-46453
Contribution Rank[Zhang, Zhong; Li, Jinhua; Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Environm Proc, Key Lab Coastal Environm Processes & Ecol Remedia, Yantai 264003, Peoples R China; [Song, Xingliang] Linyi Univ, Sch Chem & Chem Engn, Linyi 276005, Peoples R China; [Ma, Jiping] Qingdao Technol Univ, Sch Environm & Municipal Engn, Key Lab Environm Engn Shandong Prov, Qingdao 266033, Peoples R China; [Zhang, Zhong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
AbstractFor mercury speciation analysis in environmental and biological samples, novel Hg2+ ion-imprinted polymers (IIPs) were synthesized by a sol-gel process using the chelating agent dithizone, and then dithizone-Hg2+ chelate as a template and 3-aminopropyltriethoxysilane as a functional monomer, followed by solid-phase extraction (SPE) and atomic fluorescence spectroscopy (AFS) detection. The resultant Hg-IIPs offered high binding capacity, fast kinetics, and their adsorption processes followed a Langmuir isotherm and pseudo-second-order kinetic models. The IIPs displayed excellent selectivity toward Hg2+ over its organic forms and other metal ions with selectivity factors of 19-34, as well as high anti-interference ability for Hg2+ confronting with common coexistent ions. Through 10 adsorption-desorption cycles, the IIPs showed a good reusability with a relative standard deviation within 5%. Moreover, because of the chelation of dithizone, the IIPs could readily discriminate Hg2+ from organic mercury. Thus, mercury speciation analysis could be attained by using IIPs-SPE-AFS, presenting high detectability of up to 0.015 mu g L-1 for Hg2+ and 0.02 mu g L-1 for organic mercury. This method was validated by using two certified reference materials with very consistent results. Satisfactory recoveries ranging from 93.0-105.2% were attained for spiked seawater and lake water samples with three concentration levels of Hg2+. Furthermore, the analytical results for the spiked mercury species in real biological samples, such as human hair and fish meat, confirmed that the methods are practically applicable to speciation analysis. The IIPs-SPE-AFS demonstrated significant application perspectives for rapid and high-effective cleanup, enrichment and determination of trace mercury species in complicated matrices.; For mercury speciation analysis in environmental and biological samples, novel Hg2+ ion-imprinted polymers (IIPs) were synthesized by a sol-gel process using the chelating agent dithizone, and then dithizone-Hg2+ chelate as a template and 3-aminopropyltriethoxysilane as a functional monomer, followed by solid-phase extraction (SPE) and atomic fluorescence spectroscopy (AFS) detection. The resultant Hg-IIPs offered high binding capacity, fast kinetics, and their adsorption processes followed a Langmuir isotherm and pseudo-second-order kinetic models. The IIPs displayed excellent selectivity toward Hg2+ over its organic forms and other metal ions with selectivity factors of 19-34, as well as high anti-interference ability for Hg2+ confronting with common coexistent ions. Through 10 adsorption-desorption cycles, the IIPs showed a good reusability with a relative standard deviation within 5%. Moreover, because of the chelation of dithizone, the IIPs could readily discriminate Hg2+ from organic mercury. Thus, mercury speciation analysis could be attained by using IIPs-SPE-AFS, presenting high detectability of up to 0.015 mu g L-1 for Hg2+ and 0.02 mu g L-1 for organic mercury. This method was validated by using two certified reference materials with very consistent results. Satisfactory recoveries ranging from 93.0-105.2% were attained for spiked seawater and lake water samples with three concentration levels of Hg2+. Furthermore, the analytical results for the spiked mercury species in real biological samples, such as human hair and fish meat, confirmed that the methods are practically applicable to speciation analysis. The IIPs-SPE-AFS demonstrated significant application perspectives for rapid and high-effective cleanup, enrichment and determination of trace mercury species in complicated matrices.
KeywordSolid-phase Extraction Atomic Fluorescence Spectrometry Highly Selective Determination Water Samples Capillary-electrophoresis Absorption-spectrometry Mass Spectrometry Methyl-mercury Preconcentration Shell
Department中科院海岸带环境过程与生态修复重点实验室
Subject AreaChemistry, Multidisciplinary
DOI10.1039/c4ra08163c
Funding OrganizationChemistry
Indexed BySCI
WOS KeywordSOLID-PHASE EXTRACTION ; ATOMIC FLUORESCENCE SPECTROMETRY ; HIGHLY SELECTIVE DETERMINATION ; WATER SAMPLES ; CAPILLARY-ELECTROPHORESIS ; ABSORPTION-SPECTROMETRY ; MASS SPECTROMETRY ; METHYL-MERCURY ; PRECONCENTRATION ; SHELL
SubtypeArticle
Language英语
WOS Research AreaChemistry
WOS IDWOS:000342761800006
Citation statistics
Cited Times:49[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/8780
Collection中科院海岸带环境过程与生态修复重点实验室
Corresponding AuthorChen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Environm Proc, Key Lab Coastal Environm Processes & Ecol Remedia, Yantai 264003, Peoples R China. lxchen@yic.ac.cn
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Environm Proc, Key Lab Coastal Environm Processes & Ecol Remedia, Yantai 264003, Peoples R China
2.Linyi Univ, Sch Chem & Chem Engn, Linyi 276005, Peoples R China
3.Qingdao Technol Univ, Sch Environm & Municipal Engn, Key Lab Environm Engn Shandong Prov, Qingdao 266033, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationYantai Institute of Coastal Zone Research, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang, Zhong,Li, Jinhua,Song, Xingliang,et al. Hg2+ ion-imprinted polymers sorbents based on dithizone-Hg2+ chelation for mercury speciation analysis in environmental and biological samples[J]. RSC ADVANCES,2014,4(87):46444-46453.
APA Zhang, Zhong,Li, Jinhua,Song, Xingliang,Ma, Jiping,Chen, Lingxin,&Chen, LX .(2014).Hg2+ ion-imprinted polymers sorbents based on dithizone-Hg2+ chelation for mercury speciation analysis in environmental and biological samples.RSC ADVANCES,4(87),46444-46453.
MLA Zhang, Zhong,et al."Hg2+ ion-imprinted polymers sorbents based on dithizone-Hg2+ chelation for mercury speciation analysis in environmental and biological samples".RSC ADVANCES 4.87(2014):46444-46453.
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