Anodic stripping voltammetric determination of silver(I) in water using a 4-tert-butyl-1(ethoxycarbonylmethoxy)thiacalix[4]arene modified glassy carbon electrode |
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| Authors: | Fei Wang Changzheng Xin Yanju Wu Yumei Gao Baoxian Ye |
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| Institution: | 1.Department of Material and Chemistry Engineering,Henan Institute of Engineering,Zhengzhou,P.R. China;2.Department of Chemistry,Zhengzhou University,Zhengzhou,P.R. China;3.Zhengzhou Environmental Monitoring Centre,Zhengzhou,P.R. China |
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| Abstract: | A glassy carbon electrode coated with film of 4-tert-butyl-1-(ethoxycarbonylmethoxy)thiacalix4]arene is designed for the
determination of trace amounts of Ag+. Compared with bare glassy carbon electrode, the modified electrode can greatly improve the measuring sensitivity for Ag+. Under the optimum experimental conditions, the modified electrode in B-R buffer solution (pH 4.5) shows a linear voltammetric
response in the range of 5.0 × 10−8–3.0 × 10−6 M with detection limit 1.0 × 10−8 M for Ag+. The high sensitivity, selectivity, and stability of modified electrode also demonstrate its practical application for a
simple, rapid and economical determination of Ag+ in water samples. |
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