A simple dual-channel sensor for detecting cyanide in water with high selectivity and sensitivity |
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| Authors: | Tai-Bao Wei Xiao-Bin Cheng Hui Li Qi Lin Hong Yao |
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| Institution: | 1. Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Gansu Key Laboratory of Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, P.R. Chinaweitaibao@126.com;3. Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Gansu Key Laboratory of Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, P.R. China |
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| Abstract: | Taking advantage of the special nucleophilicity of cyanide, a new simple colorimetric chemosensor has been synthesised. This allows a deprotonation reaction to monitoring the cyanide. With the addition of CN? to the chemosensor aqueous solution, which could induce a change in the solution colour from yellowish to deep yellow, while no colour change could be observed in the presence of other hackneyed anions, by which CN? can be distinguished from other anions immediate with the naked eye. At the same time, a fluorescence quenching was implemented upon adding cyanide into the chemosensor aqueous solution. The absorption spectra detection limits of the chemosensor for cyanide was 5.35 × 10?8 M and the fluorescence spectra detection limit was 2.63 × 10?8 M. The cyanide test strips based on the chemosensor could serve as a convenient cyanide test kits. Furthermore, the chemosensor was successfully applied to detect cyanide in sprouting potatoes. |
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| Keywords: | Cyanide high sensitivity specific selectivity test kits sprouting potatoes |
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