Anodic Stripping Voltammetric Determination of Mercury(II) in Water Using a 4‐Tert‐Butyl‐1‐(Ethoxycarbonylmethoxy)Thiacalix[4]Arene Modified Glassy Carbon Electrode |
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Authors: | Fei Wang Jian Liu Yan‐Ju Wu Yu‐Mei Gao Xu‐Feng Huang |
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Institution: | 1. Department of Material and Chemistry Engineering, Henan Institute of Engineering, Zhengzhou 450007, P. R. China;2. Zhengzhou Environmental Monitoring Centre, Zhengzhou 450007, P. R. China |
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Abstract: | A glassy carbon electrode coated the film of 4‐tert‐butyl‐1‐(ethoxycarbonylmethoxy)thiacalix4]arene is designed for the determination of trace amounts of Hg2+. Compared with bare glassy carbon electrode, the modified electrode can improve the measuring sensitivity of Hg2+. Under the optimum experimental condition, the modified electrode in 0.1 mol L?1 H2SO4 + 0.01 mol L?1 KCl solution shows a linear voltammetric response in the range of 8.0 × 10?9 ~ 3.0 × 10?6 mol L?1 with detection limit 5.0 × 10?9 mol L?1 for Hg2+. The high sensitivity, selectivity, and stability of modified electrode also prove its practical application for a simple, rapid and economical determination of Hg2+ in water samples. |
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Keywords: | 4‐tert‐Butyl‐1‐(ethoxycarbonylmethoxy)thiacalix[4]arene Differential pulse anodic stripping voltammetry Mercury(II) ion |
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