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Detection of cyanide ions in aqueous solutions using cost effective colorimetric sensor.

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Title: Detection of cyanide ions in aqueous solutions using cost effective colorimetric sensor.
Authors: Reddy, P. Madhusudhana1, Hsieh, Shih-Rong2, Chang, Chi-Jung1 changcj@fcu.edu.tw, Kang, Jing-Yuan1
Source: Journal of Hazardous Materials. Jul2017, Vol. 334, p93-103. 11p.
Subjects: Cyanides, Aqueous solutions, Colorimetric analysis, Thiourea, Proton transfer reactions
Abstract: Cyanide (CN̄) is one of the most toxic material to the human and environment. It is very important to develop the diagnostic tools for the detection of CN̄ ions. Moreover, detection of the ions in an aqueous medium is a challenging task as water molecules interfere with the sensing mechanism. In this context, we prepared chemical sensor, S1, having anthraquinone as a signaling unit and thiourea as a binding site. This sensor exhibited distinct visual color and spectral changes in response to CN̄ ion over other testing anions in 50% aq. DMSO solution. However, in 20% aq. DMSO solution, S1 exhibited obvious spectral and color changes in response to CN̄, fluoride (F̄), acetate (Ac̄) and benzoate (Bz̄). Another sensor, S2, having a same signaling unit with that of S1, but a different binding site of urea group. In contrast to S1, S2 exhibited obvious spectral and color changes to F̄ in 2.5% aq. DMSO solution. NMR titration results suggested that the spectral and colorimetric responses were due to the formation of host-guest complex and deprotonation events. Finally, economically viable paper-based colorimetric “ test stripes ” of S1 were fabricated to detect the CN̄ ions in 100% aqueous solution. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 122769649
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PubTypeId: academicJournal
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  Data: Detection of cyanide ions in aqueous solutions using cost effective colorimetric sensor.
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  Data: <searchLink fieldCode="AR" term="%22Reddy%2C+P%2E+Madhusudhana%22">Reddy, P. Madhusudhana</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hsieh%2C+Shih-Rong%22">Hsieh, Shih-Rong</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Chang%2C+Chi-Jung%22">Chang, Chi-Jung</searchLink><relatesTo>1</relatesTo><i> changcj@fcu.edu.tw</i><br /><searchLink fieldCode="AR" term="%22Kang%2C+Jing-Yuan%22">Kang, Jing-Yuan</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Hazardous+Materials%22">Journal of Hazardous Materials</searchLink>. Jul2017, Vol. 334, p93-103. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Cyanides%22">Cyanides</searchLink><br /><searchLink fieldCode="DE" term="%22Aqueous+solutions%22">Aqueous solutions</searchLink><br /><searchLink fieldCode="DE" term="%22Colorimetric+analysis%22">Colorimetric analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Thiourea%22">Thiourea</searchLink><br /><searchLink fieldCode="DE" term="%22Proton+transfer+reactions%22">Proton transfer reactions</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Cyanide (CN̄) is one of the most toxic material to the human and environment. It is very important to develop the diagnostic tools for the detection of CN̄ ions. Moreover, detection of the ions in an aqueous medium is a challenging task as water molecules interfere with the sensing mechanism. In this context, we prepared chemical sensor, S1, having anthraquinone as a signaling unit and thiourea as a binding site. This sensor exhibited distinct visual color and spectral changes in response to CN̄ ion over other testing anions in 50% aq. DMSO solution. However, in 20% aq. DMSO solution, S1 exhibited obvious spectral and color changes in response to CN̄, fluoride (F̄), acetate (Ac̄) and benzoate (Bz̄). Another sensor, S2, having a same signaling unit with that of S1, but a different binding site of urea group. In contrast to S1, S2 exhibited obvious spectral and color changes to F̄ in 2.5% aq. DMSO solution. NMR titration results suggested that the spectral and colorimetric responses were due to the formation of host-guest complex and deprotonation events. Finally, economically viable paper-based colorimetric “ test stripes ” of S1 were fabricated to detect the CN̄ ions in 100% aqueous solution. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.jhazmat.2017.04.001
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 93
    Subjects:
      – SubjectFull: Cyanides
        Type: general
      – SubjectFull: Aqueous solutions
        Type: general
      – SubjectFull: Colorimetric analysis
        Type: general
      – SubjectFull: Thiourea
        Type: general
      – SubjectFull: Proton transfer reactions
        Type: general
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      – TitleFull: Detection of cyanide ions in aqueous solutions using cost effective colorimetric sensor.
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            NameFull: Reddy, P. Madhusudhana
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            NameFull: Hsieh, Shih-Rong
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            NameFull: Chang, Chi-Jung
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            NameFull: Kang, Jing-Yuan
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            – D: 15
              M: 07
              Text: Jul2017
              Type: published
              Y: 2017
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              Value: 334
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