EIS/VIMP screening of archaeological bronze corrosion products

Detalhes bibliográficos
Autor(a) principal: Redondo-Marugán, Jorge
Data de Publicação: 2018
Outros Autores: Doménech-Carbó, Antonio, Capelo, Sofia
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/24401
Resumo: Electrochemical impedance measurements were applied to microparticulate deposits of copper corrosion products attached to graphite electrodes in contact with different aqueous electrolytes (0.25 M HAc/NaAc (pH 4.75), 0.10 M HCl and 0.10 M HClO4) and the application of an interval of potentials between +0.25V to -0.75V. The conditions of operation were selected from a compromise between repeatability and sensitivity, being 0.10 M HClO4 and bias potential of 0.25 V adopted. The electrochemical impedance data were modeled on the basis of available equivalent circuits for corroded metal surfaces and the correlation between several pairs of circuit elements provided the characterization of different corrosion compounds regardless the amount of microparticulate solid on the electrode. Electrochemical grouping of samples from the archaeological Roman site of Gadara (Jordan, 4th century AD) suggests different provenances/manufacturing techniques, consistent with voltammetry of immobilized particles (VIMP) measurements. Thus, illustrating the capabilities of the intersection of such techniques in the archaeometric domain.
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spelling EIS/VIMP screening of archaeological bronze corrosion productsArchaeological bronzeElectrochemical Impedance MeasurementsVoltammetry of immobilized particlesCopper compoundsCopper corrosion productsElectrochemical impedance measurements were applied to microparticulate deposits of copper corrosion products attached to graphite electrodes in contact with different aqueous electrolytes (0.25 M HAc/NaAc (pH 4.75), 0.10 M HCl and 0.10 M HClO4) and the application of an interval of potentials between +0.25V to -0.75V. The conditions of operation were selected from a compromise between repeatability and sensitivity, being 0.10 M HClO4 and bias potential of 0.25 V adopted. The electrochemical impedance data were modeled on the basis of available equivalent circuits for corroded metal surfaces and the correlation between several pairs of circuit elements provided the characterization of different corrosion compounds regardless the amount of microparticulate solid on the electrode. Electrochemical grouping of samples from the archaeological Roman site of Gadara (Jordan, 4th century AD) suggests different provenances/manufacturing techniques, consistent with voltammetry of immobilized particles (VIMP) measurements. Thus, illustrating the capabilities of the intersection of such techniques in the archaeometric domain.Universitat Politècnica de València2019-01-31T15:47:33Z2019-01-312018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/24401http://hdl.handle.net/10174/24401engJorge Redondo-Marugán, Antonio Doménech-Carbó, Sofia Capelo, EIS/VIMP screening of archaeological bronze corrosion products, Proceedings of the Third European Conference on Electrochemical Techniques Applied to the Conservation of Artworks, Valencia, Spain, March 28, 2017.978-84-9048-698-6CIDEHUS - Artigos em Livros de Actas/Proceedingsjorema@alumni.uv.esAntonio.Domenech@uv.esscapelo@uevora.pt709Redondo-Marugán, JorgeDoménech-Carbó, AntonioCapelo, Sofiainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:17:25Zoai:dspace.uevora.pt:10174/24401Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:15:05.825117Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv EIS/VIMP screening of archaeological bronze corrosion products
title EIS/VIMP screening of archaeological bronze corrosion products
spellingShingle EIS/VIMP screening of archaeological bronze corrosion products
Redondo-Marugán, Jorge
Archaeological bronze
Electrochemical Impedance Measurements
Voltammetry of immobilized particles
Copper compounds
Copper corrosion products
title_short EIS/VIMP screening of archaeological bronze corrosion products
title_full EIS/VIMP screening of archaeological bronze corrosion products
title_fullStr EIS/VIMP screening of archaeological bronze corrosion products
title_full_unstemmed EIS/VIMP screening of archaeological bronze corrosion products
title_sort EIS/VIMP screening of archaeological bronze corrosion products
author Redondo-Marugán, Jorge
author_facet Redondo-Marugán, Jorge
Doménech-Carbó, Antonio
Capelo, Sofia
author_role author
author2 Doménech-Carbó, Antonio
Capelo, Sofia
author2_role author
author
dc.contributor.author.fl_str_mv Redondo-Marugán, Jorge
Doménech-Carbó, Antonio
Capelo, Sofia
dc.subject.por.fl_str_mv Archaeological bronze
Electrochemical Impedance Measurements
Voltammetry of immobilized particles
Copper compounds
Copper corrosion products
topic Archaeological bronze
Electrochemical Impedance Measurements
Voltammetry of immobilized particles
Copper compounds
Copper corrosion products
description Electrochemical impedance measurements were applied to microparticulate deposits of copper corrosion products attached to graphite electrodes in contact with different aqueous electrolytes (0.25 M HAc/NaAc (pH 4.75), 0.10 M HCl and 0.10 M HClO4) and the application of an interval of potentials between +0.25V to -0.75V. The conditions of operation were selected from a compromise between repeatability and sensitivity, being 0.10 M HClO4 and bias potential of 0.25 V adopted. The electrochemical impedance data were modeled on the basis of available equivalent circuits for corroded metal surfaces and the correlation between several pairs of circuit elements provided the characterization of different corrosion compounds regardless the amount of microparticulate solid on the electrode. Electrochemical grouping of samples from the archaeological Roman site of Gadara (Jordan, 4th century AD) suggests different provenances/manufacturing techniques, consistent with voltammetry of immobilized particles (VIMP) measurements. Thus, illustrating the capabilities of the intersection of such techniques in the archaeometric domain.
publishDate 2018
dc.date.none.fl_str_mv 2018-01-01T00:00:00Z
2019-01-31T15:47:33Z
2019-01-31
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/24401
http://hdl.handle.net/10174/24401
url http://hdl.handle.net/10174/24401
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Jorge Redondo-Marugán, Antonio Doménech-Carbó, Sofia Capelo, EIS/VIMP screening of archaeological bronze corrosion products, Proceedings of the Third European Conference on Electrochemical Techniques Applied to the Conservation of Artworks, Valencia, Spain, March 28, 2017.
978-84-9048-698-6
CIDEHUS - Artigos em Livros de Actas/Proceedings
jorema@alumni.uv.es
Antonio.Domenech@uv.es
scapelo@uevora.pt
709
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universitat Politècnica de València
publisher.none.fl_str_mv Universitat Politècnica de València
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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