Crossing VIMP and EIS for studying heterogeneous sets of copper/bronze coins

  • Francesca Di TuroEmail author
  • Rafael Parra
  • Joan Piquero-Cilla
  • Gabriele Favero
  • Antonio Doménech-CarbóEmail author
Original Paper


Electrochemical impedance spectroscopy (EIS) and voltammetry of immobilized particles (VIMP) measurements using air-saturated mineral water and 0.10 M NaClO4 aqueous solution as electrolytes were applied to eurocent coins and a set of copper/bronze coins from the late nineteenth century exhibiting significant heterogeneity in their degree and type of corrosion. The obtained data presented satisfactory repeatability being fitted to relatively simple equivalent circuits which were dependent on the electrolyte and bias potential, the more satisfactory conditions being obtained using the reduction of dissolved oxygen as a redox probe. Consistent data were obtained using VIMP and EIS characterizing different corrosion patterns, and establishing the possibility of discriminating different monetary emissions in favorable cases of high level of corrosion.


Electrochemistry Archaeology Electrochemical impedance spectroscopy Copper Bronze 


Funding information

Project CTQ2017-85317-C2-1-P, which is supported with Ministerio de Economía, Industria y Competitividad (MINECO) and Fondo Europeo de Desarrollo Regional (ERDF) funds, and Agencia Estatal de Investigación (AEI) and PhD grants of the Department of Earth Sciences, Sapienza University of Rome, are gratefully acknowledged.

Supplementary material

10008_2018_4182_MOESM1_ESM.doc (298 kb)
ESM 1 (DOC 297 kb)


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Copyright information

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

Authors and Affiliations

  1. 1.Department of Earth SciencesSapienza University of RomeRomeItaly
  2. 2.Division de Ingenieria Mecanica e Industrial, Facultad de IngenieriaUniversidad Nacional Autonoma de Mexico (UNAM)CDMXMexico
  3. 3.Departament de Química AnalíticaUniversitat de ValènciaValènciaSpain
  4. 4.Department of Chemistry and Drug TechnologiesSapienza University of RomeRomeItaly

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