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For the first time an in situ plated lead film electrode was applied to adsorptive stripping voltammetry at relatively strong acidic conditions of, e.g., pH 2. As an example of the application of such electrode a procedure for ultratrace W(VI) determination by adsorptive stripping voltammetry was elaborated. The procedure is based on the preconcentration of the W(VI)‐Alizarin Red S complex at an in...
A sensitive, simple and fast adsorptive stripping voltammetric procedure for trace determination of cadmium in natural samples containing high concentrations of surface active substances and humic substances has been developed. The method is based on adsorptive accumulation of the Cd(II)‐cupferron complex onto a hanging mercury drop electrode, followed by the reduction of the adsorbed species by a...
The application of cupferron as a complexing agent for a simultaneous voltammetric determination of U(VI) and Cd(II) in a single scan in environmental water samples has been developed. Optimal conditions were found to be: 0.05 mol L−1 acetate buffer (pH 5.3) as a supporting electrolyte, 1×10−3 mol L−1 cupferron, the accumulation potential −0.25 V, the accumulation time 30 s. The linear range of uranium(VI)...
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