EIS/VIMP screening of archaeological bronze corrosion products
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/24619 |
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 HClO 4 ) 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 HClO 4 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, 4 th 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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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 HClO 4 ) 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 HClO 4 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, 4 th 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.Editorial Universitat Politècnica de València2019-02-12T18:16:49Z2019-02-122018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/24619http://hdl.handle.net/10174/24619engJorge Redondo-Marugán, Antonio Doménech-Carbó, Sofia Capelo, EIS/VIMP screening of archaeological bronze corrosion products, Proceedings of the 3rd European Conference on electrochemical methods applied to the conservation of artworks, Valencia, Spain, 28th March 2017.978-84-9048-698-6PAO-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:RCAAP2024-01-03T19:17:21Zoai:dspace.uevora.pt:10174/24619Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:15:04.270531Repositório 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 HClO 4 ) 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 HClO 4 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, 4 th 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 2019-02-12T18:16:49Z 2019-02-12 |
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/10174/24619 http://hdl.handle.net/10174/24619 |
url |
http://hdl.handle.net/10174/24619 |
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 3rd European Conference on electrochemical methods applied to the conservation of artworks, Valencia, Spain, 28th March 2017. 978-84-9048-698-6 PAO-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 |
Editorial Universitat Politècnica de València |
publisher.none.fl_str_mv |
Editorial 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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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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 |
repository.mail.fl_str_mv |
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1799136632690966528 |