Applying the voltammetry of microparticles to assess the metal ion excess following a precipitation reaction: the determination of arsenic
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Here we demonstrate that the metal ion excess after precipitating a sparingly soluble metal salt can be conveniently determined by a secondary precipitation of a metal salt on an electrode surface, followed by measuring the solid-state electrochemical response of that salt. As an example, the analysis of the arsenic content of solutions is presented.
The authors are especially grateful to the company ECOMETALES Ltd. (subsidiary of Codelco Chile) for providing a sample of the effluent solution (EPAS) of the Arsenic Treatment Plant of the Copper Smelter.
M. Gulppi thanks Conicyt (Fondecyt project No. 1160167) and DICYT-USACH (Grant 051742PC-DAS).
- 1.Skoog DA, West DM, Holler FJ, Crouch SR (2013) Fundamentals of analytical chemistry, 9th edn. Brooks/Cole, BelmontGoogle Scholar
- 4.Scholz F, Schröder U, Gulaboski R, Doménech-Carbó A (2015) Electrochemistry of immobilized particles and droplets, 2nd edn. Springer, BerlinGoogle Scholar