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Red-to-blue colorimetric detection of chromium via Cr (III)-citrate chelating based on Tween 20-stabilized gold nanoparticles
Wang, Xiaokun1,3; Wei, Yingqin2; Wang, Shasha1; Chen, Lingxin1,3; Chen, LX (reprint author), Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Prov Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China. lxchen@yic.ac.cn
Source PublicationCOLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN0927-7757
2015-05-05
Volume472Pages:57-62
KeywordColorimetric Detection Cr (Iii) Cr (Vi) Gold Nanoparticles Chelating Aggregation
DOI10.1016/j.colsurfa.2015.02.033
Contribution Rank[Wang, Xiaokun; Wang, Shasha; Chen, Lingxin] Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Prov Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Wei, Yingqin] Qilu Univ Technol, Sch Chem & Pharmaceut Engn, Jinan 250353, Peoples R China; [Wang, Xiaokun; Chen, Lingxin] Qufu Normal Univ, Coll Chem & Chem Engn, Qufu 273165, Peoples R China
Department中科院海岸带环境过程与生态修复重点实验室
AbstractIn this work, a simple "red-to-blue" colorimetric method for highly sensitive and selective determination of Cr (III) and Cr (VI) was presented, which was based on the aggregation of Tween 20-stabilized gold nanoparticles (Tween 20-Au NPs). This strategy relied upon the distance-dependent optical properties of gold nanoparticles (Au NPs), strong chelating between Cr (III) and citrate, and the reduction of Cr (VI) to Cr (III) by ascorbic acid (AA). Cr (III) could chelate with citrate to form a stable Cr (III)-citrate complex and thereby induce the aggregation of Tween 20-Au NPs. Thus, the sensing of Cr (III) and Cr (VI) based on aggregation of Au NPs was developed with the color of the Au NPs changing from red to blue, which was readily seen by the naked eye. The color change and surface plasmon resonance (SPR) absorption were used to monitor Cr (III) and Cr (VI) levels. Under the optimal assay conditions, good linear relationship was obtained, and the detection limit of Cr (III) and Cr (VI) were 0.016 mu M and 0.009 mu M in standard aqueous solution, respectively. Furthermore, the colorimetric method exhibited a good selectivity over other metal ions and was successfully applied to detect Cr (III) and Cr (VI) in real water samples. (C) 2015 Elsevier B.V. All rights reserved.; In this work, a simple "red-to-blue" colorimetric method for highly sensitive and selective determination of Cr (III) and Cr (VI) was presented, which was based on the aggregation of Tween 20-stabilized gold nanoparticles (Tween 20-Au NPs). This strategy relied upon the distance-dependent optical properties of gold nanoparticles (Au NPs), strong chelating between Cr (III) and citrate, and the reduction of Cr (VI) to Cr (III) by ascorbic acid (AA). Cr (III) could chelate with citrate to form a stable Cr (III)-citrate complex and thereby induce the aggregation of Tween 20-Au NPs. Thus, the sensing of Cr (III) and Cr (VI) based on aggregation of Au NPs was developed with the color of the Au NPs changing from red to blue, which was readily seen by the naked eye. The color change and surface plasmon resonance (SPR) absorption were used to monitor Cr (III) and Cr (VI) levels. Under the optimal assay conditions, good linear relationship was obtained, and the detection limit of Cr (III) and Cr (VI) were 0.016 mu M and 0.009 mu M in standard aqueous solution, respectively. Furthermore, the colorimetric method exhibited a good selectivity over other metal ions and was successfully applied to detect Cr (III) and Cr (VI) in real water samples. (C) 2015 Elsevier B.V. All rights reserved.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordATOMIC-FORCE MICROSCOPY ; SILVER NANOPARTICLES ; SPECIATION ; IONS ; PRECONCENTRATION ; SPECTROMETRY ; INTERFACE ; MERCURY ; WATERS
WOS Research AreaChemistry
WOS IDWOS:000352018300007
Funding OrganizationChemistry
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/8621
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, Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Prov Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China. lxchen@yic.ac.cn
Affiliation1.Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Prov Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
2.Qilu Univ Technol, Sch Chem & Pharmaceut Engn, Jinan 250353, Peoples R China
3.Qufu Normal Univ, Coll Chem & Chem Engn, Qufu 273165, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xiaokun,Wei, Yingqin,Wang, Shasha,et al. Red-to-blue colorimetric detection of chromium via Cr (III)-citrate chelating based on Tween 20-stabilized gold nanoparticles[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2015,472:57-62.
APA Wang, Xiaokun,Wei, Yingqin,Wang, Shasha,Chen, Lingxin,&Chen, LX .(2015).Red-to-blue colorimetric detection of chromium via Cr (III)-citrate chelating based on Tween 20-stabilized gold nanoparticles.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,472,57-62.
MLA Wang, Xiaokun,et al."Red-to-blue colorimetric detection of chromium via Cr (III)-citrate chelating based on Tween 20-stabilized gold nanoparticles".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 472(2015):57-62.
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