A highly selective colorimetric sensor for Hg2＋ based on a copper （II） complex of thiosemicarbazone in aqueous solutions

By applying an indirect strategy, a new copper （II） complex of a thiosemicarbazone L has been successfully developed as a colorimetric cbemosensor for the sensitive detection of mercury （II） ions. In the presence of copper （II） ions, the colorless so- lution of L became yellow; however, upon the add...

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Bibliographic Details
Published in:中国科学：化学英文版 2013 (7), p.923-927
Main Author: WEI TaiBao LI JunJian BAI CuiBing LIN Qi YAO Hong XIE YongQiang ZHANG YouMing
Format: Article
Language:English
Subjects:
基础
检测试剂盒
水溶液
汞
硫脲类
缩氨基硫脲
色传感器
铜（II）配合物
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Summary:By applying an indirect strategy, a new copper （II） complex of a thiosemicarbazone L has been successfully developed as a colorimetric cbemosensor for the sensitive detection of mercury （II） ions. In the presence of copper （II） ions, the colorless so- lution of L became yellow; however, upon the addition of traces of mercury （II） ions, the yellow color faded to colorless im- mediately. Other ions, including Fe3＋, Ag＋, Ca2＋, Zn2＋, Pb2＋, Cd2＋, Ni2＋, Co2＋, Cr3＋ and Mg2＋ had a negligible influence on the probe behavior. The detection limits were 5.0×10^-6 M and 3.0×10^-7 M of Hg2＋ using the visual color changes and UV-vis changes respectively. Test strips based on Cu-L were fabricated, which could act as a convenient and efficient Hg2＋ test kits.
ISSN:1674-7291
1869-1870