A Simple Colorimetric Sensor with High Selectivity for Mercury Cation in Aqueous Solution |
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| Authors: | You-Ming Zhang Ping Li Qi Lin Tai-Bao Wei Jun-Qiang Li |
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| Institution: | 1. Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, College of Chemistry and Chemical Engineering , Northwest Normal University , Gansu, P. R. China;2. Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering , Northwest Normal University , Gansu, P. R. China |
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| Abstract: | Abstract A simple and sensitive mercapto thiadiazole Schiff-base colorimetric chemosensor 2 was synthesized. It exhibits good selectivity and sensitivity for the mercury cation over other metal cations such as Zn2+, Pb2+, Cd2+, Ni2+, Co2+, Ag+, Ca2+, Mg2+, and Cr3+ in both aqueous solution and on paper-made test kits. The change in color is very easily observed by the naked eye for the presence of Hg2+ cation, whereas other metal cations do not induce such a change. The chemosensor 2 showed remarkably anti-interference ability toward other metal cations and the detection limit toward Hg2+ was 1.5 × 10?5 M. GRAPHICAL ABSTRACT  |
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| Keywords: | Mercury cation sensor mercapto thiadiazole cation recognition colorimetic test kit |
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