An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study
Autor(a) principal: | |
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Data de Publicação: | 2023 |
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/10174/35581 https://doi.org/10.36868/IJCS.2023.03.27 |
Resumo: | This study reports the first results of the analysis carried out in 2022 on deteriorated green paint layers from the mural paintings made by Almada Negreiros at the Maritime Station of Alcantara, in Lisbon (Portugal). These murals painted in 1945 are one of the most emblematic painting sets done by the modernist artist and exhibit a bright chromatic palette that displays different states of conservation, with the green paint layers particularly damaged, showing severe flaking and powdering in the lightest shades. To understand the decay phenomenon, in-situ and laboratory analyses were done in an attempt to identify the green chromophores, the painting technique, and the decay agents causing the visible degradation. The analytical setup comprised in-situ technical photography (Vis, Vis-Rak, and UVF), handheld optical microscopy (h-OM), handheld energy dispersive X-ray fluorescence (h-EDXRF), colorimetry, and spectrophotometry in the visible light range. Microsamples of selected paint layers from deteriorated and stable green areas were collected and further analysed in the laboratory by optical microscopy in visible and ultraviolet modes (OM-UV-Vis), variable pressure scanning electron microscopy coupled with energy dispersive spectrometry (VP-SEM-EDS), micro-X-ray diffraction (μ-XRD), micro-Fourier-transform infrared spectroscopy (μ-FT-IR) and micro-Raman spectroscopy. Results show the presence of both natural and industrial synthetic organic pigments, such as green earths and PG8, used alone or in mixtures with other chromophores (e.g., Fe-based yellow and red pigments, bone and carbon black, ultramarine blue, and the synthetic green PG1 and the yellow PY1). Concerning the decay phenomena, the main hypothesis for the powdering and flaking of the green paint layers is the activity of calcium sulphates (e.g., gypsum), which probably originated from both intrinsic and extrinsic sources and whose presence was found to be widespread in all the microsamples analyzed. |
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An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric StudyModern Mural PaintingSynthetic Organic PigmentsGypsumμ-XRDmicro-Raman spectroscopyThis study reports the first results of the analysis carried out in 2022 on deteriorated green paint layers from the mural paintings made by Almada Negreiros at the Maritime Station of Alcantara, in Lisbon (Portugal). These murals painted in 1945 are one of the most emblematic painting sets done by the modernist artist and exhibit a bright chromatic palette that displays different states of conservation, with the green paint layers particularly damaged, showing severe flaking and powdering in the lightest shades. To understand the decay phenomenon, in-situ and laboratory analyses were done in an attempt to identify the green chromophores, the painting technique, and the decay agents causing the visible degradation. The analytical setup comprised in-situ technical photography (Vis, Vis-Rak, and UVF), handheld optical microscopy (h-OM), handheld energy dispersive X-ray fluorescence (h-EDXRF), colorimetry, and spectrophotometry in the visible light range. Microsamples of selected paint layers from deteriorated and stable green areas were collected and further analysed in the laboratory by optical microscopy in visible and ultraviolet modes (OM-UV-Vis), variable pressure scanning electron microscopy coupled with energy dispersive spectrometry (VP-SEM-EDS), micro-X-ray diffraction (μ-XRD), micro-Fourier-transform infrared spectroscopy (μ-FT-IR) and micro-Raman spectroscopy. Results show the presence of both natural and industrial synthetic organic pigments, such as green earths and PG8, used alone or in mixtures with other chromophores (e.g., Fe-based yellow and red pigments, bone and carbon black, ultramarine blue, and the synthetic green PG1 and the yellow PY1). Concerning the decay phenomena, the main hypothesis for the powdering and flaking of the green paint layers is the activity of calcium sulphates (e.g., gypsum), which probably originated from both intrinsic and extrinsic sources and whose presence was found to be widespread in all the microsamples analyzed.Romanian Inventors Forum2023-10-10T08:51:24Z2023-10-102023-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/35581http://hdl.handle.net/10174/35581https://doi.org/10.36868/IJCS.2023.03.27engA. Acevedo-Mejia, M. Costa, P. Vandenabeele, L. Dias, J.C. Frade & M. Gil*. An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study. International Journal of Conservation Science, 14(3): 1185-1204. DOI: 10.36868/IJCS.2023.03.27.https://ijcs.ro/public/IJCS-23-78_Acevedo-Mejia.pdfndmcosta@uevora.ptndluisdias@uevora.ptndmilenegil@uevora.ptAcevedo-Mejia, AndreaCosta, MafaldaVandenabeele, PeterDias, LuísFrade, José CarlosGil, Mileneinfo: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:RCAAP2024-01-03T19:39:21Zoai:dspace.uevora.pt:10174/35581Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:23:57.626898Repositório 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 |
An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study |
title |
An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study |
spellingShingle |
An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study Acevedo-Mejia, Andrea Modern Mural Painting Synthetic Organic Pigments Gypsum μ-XRD micro-Raman spectroscopy |
title_short |
An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study |
title_full |
An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study |
title_fullStr |
An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study |
title_full_unstemmed |
An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study |
title_sort |
An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study |
author |
Acevedo-Mejia, Andrea |
author_facet |
Acevedo-Mejia, Andrea Costa, Mafalda Vandenabeele, Peter Dias, Luís Frade, José Carlos Gil, Milene |
author_role |
author |
author2 |
Costa, Mafalda Vandenabeele, Peter Dias, Luís Frade, José Carlos Gil, Milene |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Acevedo-Mejia, Andrea Costa, Mafalda Vandenabeele, Peter Dias, Luís Frade, José Carlos Gil, Milene |
dc.subject.por.fl_str_mv |
Modern Mural Painting Synthetic Organic Pigments Gypsum μ-XRD micro-Raman spectroscopy |
topic |
Modern Mural Painting Synthetic Organic Pigments Gypsum μ-XRD micro-Raman spectroscopy |
description |
This study reports the first results of the analysis carried out in 2022 on deteriorated green paint layers from the mural paintings made by Almada Negreiros at the Maritime Station of Alcantara, in Lisbon (Portugal). These murals painted in 1945 are one of the most emblematic painting sets done by the modernist artist and exhibit a bright chromatic palette that displays different states of conservation, with the green paint layers particularly damaged, showing severe flaking and powdering in the lightest shades. To understand the decay phenomenon, in-situ and laboratory analyses were done in an attempt to identify the green chromophores, the painting technique, and the decay agents causing the visible degradation. The analytical setup comprised in-situ technical photography (Vis, Vis-Rak, and UVF), handheld optical microscopy (h-OM), handheld energy dispersive X-ray fluorescence (h-EDXRF), colorimetry, and spectrophotometry in the visible light range. Microsamples of selected paint layers from deteriorated and stable green areas were collected and further analysed in the laboratory by optical microscopy in visible and ultraviolet modes (OM-UV-Vis), variable pressure scanning electron microscopy coupled with energy dispersive spectrometry (VP-SEM-EDS), micro-X-ray diffraction (μ-XRD), micro-Fourier-transform infrared spectroscopy (μ-FT-IR) and micro-Raman spectroscopy. Results show the presence of both natural and industrial synthetic organic pigments, such as green earths and PG8, used alone or in mixtures with other chromophores (e.g., Fe-based yellow and red pigments, bone and carbon black, ultramarine blue, and the synthetic green PG1 and the yellow PY1). Concerning the decay phenomena, the main hypothesis for the powdering and flaking of the green paint layers is the activity of calcium sulphates (e.g., gypsum), which probably originated from both intrinsic and extrinsic sources and whose presence was found to be widespread in all the microsamples analyzed. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-10-10T08:51:24Z 2023-10-10 2023-09-01T00:00:00Z |
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/10174/35581 http://hdl.handle.net/10174/35581 https://doi.org/10.36868/IJCS.2023.03.27 |
url |
http://hdl.handle.net/10174/35581 https://doi.org/10.36868/IJCS.2023.03.27 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
A. Acevedo-Mejia, M. Costa, P. Vandenabeele, L. Dias, J.C. Frade & M. Gil*. An Insight into the Green Deteriorated Paint Layers at the Maritime Station of Alcântara (Lisbon): an Archeometric Study. International Journal of Conservation Science, 14(3): 1185-1204. DOI: 10.36868/IJCS.2023.03.27. https://ijcs.ro/public/IJCS-23-78_Acevedo-Mejia.pdf nd mcosta@uevora.pt nd luisdias@uevora.pt nd milenegil@uevora.pt |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Romanian Inventors Forum |
publisher.none.fl_str_mv |
Romanian Inventors Forum |
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 |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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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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1799136722290737152 |