The use of microspectrofluorimetry for the characterization of lake pigments
Autor(a) principal: | |
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Data de Publicação: | 2008 |
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/10316/5031 https://doi.org/10.1016/j.talanta.2007.07.036 |
Resumo: | In this paper, the potential of confocal microfluorescence spectroscopy is explored for the characterization of selected red lake pigments and paints based on alizarin, purpurin and eosin (weak, medium and strong emitters). The anthraquinone pigments have been used since ancient times by artists, and eosin lakes were used by impressionist painters. Reconstructions of artists paints based on 19th century recipes are examined. The paints were made using the lake pigments bound in a range of binding media including gum arabic, collagen, a vinyl emulsion and linseed oil. The acquisition of the spectra is rapid, with high spatial resolution and the data reliable and reproducible. Together with full emission spectra, it was possible to acquire well-resolved excitation spectra for purpurin, alizarin and eosin based colors. The present investigation suggests that micro-emission fluorescence can also be used as a semi-quantitative method for madder lake pigments, enabling the determination of purpurin lake ratio in a mixture of purpurin and alizarin, which is important for provenance studies. The data obtained with microfluorescence emission with those acquired with fiber-optic fluorimetry are compared. The spatial resolution used, 8 [mu]m, is appropriate for the analysis of individual pigments particles or aggregates in a paint film. Micro-emission molecular fluorescence proved to be a promising analytical tool to identify the presence of selected red lake pigments combined with a range of binding media. |
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The use of microspectrofluorimetry for the characterization of lake pigmentsRed lake pigmentsMicrofluorescence spectroscopyIn situ dye analysisIn this paper, the potential of confocal microfluorescence spectroscopy is explored for the characterization of selected red lake pigments and paints based on alizarin, purpurin and eosin (weak, medium and strong emitters). The anthraquinone pigments have been used since ancient times by artists, and eosin lakes were used by impressionist painters. Reconstructions of artists paints based on 19th century recipes are examined. The paints were made using the lake pigments bound in a range of binding media including gum arabic, collagen, a vinyl emulsion and linseed oil. The acquisition of the spectra is rapid, with high spatial resolution and the data reliable and reproducible. Together with full emission spectra, it was possible to acquire well-resolved excitation spectra for purpurin, alizarin and eosin based colors. The present investigation suggests that micro-emission fluorescence can also be used as a semi-quantitative method for madder lake pigments, enabling the determination of purpurin lake ratio in a mixture of purpurin and alizarin, which is important for provenance studies. The data obtained with microfluorescence emission with those acquired with fiber-optic fluorimetry are compared. The spatial resolution used, 8 [mu]m, is appropriate for the analysis of individual pigments particles or aggregates in a paint film. Micro-emission molecular fluorescence proved to be a promising analytical tool to identify the presence of selected red lake pigments combined with a range of binding media.http://www.sciencedirect.com/science/article/B6THP-4PD4X9S-1/1/9160e8925e9e8f8b24617f15558da5b72008info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/5031http://hdl.handle.net/10316/5031https://doi.org/10.1016/j.talanta.2007.07.036engTalanta. 74:4 (2008) 922-929Claro, AnaMelo, Maria J.Schäfer, StephanMelo, J. Sérgio Seixas dePina, FernandoBerg, Klaas Jan van denBurnstock, Avivainfo: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:RCAAP2020-11-06T16:59:21Zoai:estudogeral.uc.pt:10316/5031Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:01:39.510827Repositório 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 |
The use of microspectrofluorimetry for the characterization of lake pigments |
title |
The use of microspectrofluorimetry for the characterization of lake pigments |
spellingShingle |
The use of microspectrofluorimetry for the characterization of lake pigments Claro, Ana Red lake pigments Microfluorescence spectroscopy In situ dye analysis |
title_short |
The use of microspectrofluorimetry for the characterization of lake pigments |
title_full |
The use of microspectrofluorimetry for the characterization of lake pigments |
title_fullStr |
The use of microspectrofluorimetry for the characterization of lake pigments |
title_full_unstemmed |
The use of microspectrofluorimetry for the characterization of lake pigments |
title_sort |
The use of microspectrofluorimetry for the characterization of lake pigments |
author |
Claro, Ana |
author_facet |
Claro, Ana Melo, Maria J. Schäfer, Stephan Melo, J. Sérgio Seixas de Pina, Fernando Berg, Klaas Jan van den Burnstock, Aviva |
author_role |
author |
author2 |
Melo, Maria J. Schäfer, Stephan Melo, J. Sérgio Seixas de Pina, Fernando Berg, Klaas Jan van den Burnstock, Aviva |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Claro, Ana Melo, Maria J. Schäfer, Stephan Melo, J. Sérgio Seixas de Pina, Fernando Berg, Klaas Jan van den Burnstock, Aviva |
dc.subject.por.fl_str_mv |
Red lake pigments Microfluorescence spectroscopy In situ dye analysis |
topic |
Red lake pigments Microfluorescence spectroscopy In situ dye analysis |
description |
In this paper, the potential of confocal microfluorescence spectroscopy is explored for the characterization of selected red lake pigments and paints based on alizarin, purpurin and eosin (weak, medium and strong emitters). The anthraquinone pigments have been used since ancient times by artists, and eosin lakes were used by impressionist painters. Reconstructions of artists paints based on 19th century recipes are examined. The paints were made using the lake pigments bound in a range of binding media including gum arabic, collagen, a vinyl emulsion and linseed oil. The acquisition of the spectra is rapid, with high spatial resolution and the data reliable and reproducible. Together with full emission spectra, it was possible to acquire well-resolved excitation spectra for purpurin, alizarin and eosin based colors. The present investigation suggests that micro-emission fluorescence can also be used as a semi-quantitative method for madder lake pigments, enabling the determination of purpurin lake ratio in a mixture of purpurin and alizarin, which is important for provenance studies. The data obtained with microfluorescence emission with those acquired with fiber-optic fluorimetry are compared. The spatial resolution used, 8 [mu]m, is appropriate for the analysis of individual pigments particles or aggregates in a paint film. Micro-emission molecular fluorescence proved to be a promising analytical tool to identify the presence of selected red lake pigments combined with a range of binding media. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008 |
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/10316/5031 http://hdl.handle.net/10316/5031 https://doi.org/10.1016/j.talanta.2007.07.036 |
url |
http://hdl.handle.net/10316/5031 https://doi.org/10.1016/j.talanta.2007.07.036 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Talanta. 74:4 (2008) 922-929 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
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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1799133907417825280 |