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Applying the voltammetry of microparticles to assess the metal ion excess following a precipitation reaction: the determination of arsenic

  • Javier Espinoza-Vergara
  • Jorge Pavez
  • Evelyn Gonzalez
  • Cristián Ramirez
  • Maritza Páez
  • Miguel GulppiEmail author
Original Paper
  • 30 Downloads

Abstract

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.

Notes

Acknowledgements

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.

Funding information

M. Gulppi thanks Conicyt (Fondecyt project No. 1160167) and DICYT-USACH (Grant 051742PC-DAS).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Departamento de Química de los Materiales, Facultad de Química y BiologíaUniversidad de Santiago de ChileSantiagoChile
  2. 2.Facultad de Ciencias de la Salud, Instituto de Investigación Interdisciplinar en Ciencias Biomédicas SEK (I3CBSEK)Universidad SEK ChileSantiagoChile

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