Anodic Stripping Voltammetric Determination of Mercury(II) in Water Using a 4‐Tert‐Butyl‐1‐(Ethoxycarbonylmethoxy)Thiacalix[4]Arene Modified Glassy Carbon Electrode

A glassy carbon electrode coated the film of 4‐tert‐butyl‐1‐(ethoxycarbonylmethoxy)thiacalix[4]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.