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Radiocarbon dating of lead white

2021-12Artigo científico Acesso aberto
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dc.contributor.authorSá, Sara
dc.contributor.authorHendriks, Laura
dc.contributor.authorPombo Cardoso, Isabel
dc.contributor.authorHajdas, Irka
dc.contributor.institutionLAQV@REQUIMTE
dc.contributor.institutionDCR - Departamento de Conservação e Restauro
dc.contributor.pblNature Publishing Group
dc.date.accessioned2021-10-13T23:19:51Z
dc.date.available2021-10-13T23:19:51Z
dc.date.issued2021-12
dc.descriptionPD/BD/135054/2017 PTDC/ ART-OUT/5992/2020 UIDB/50006/2020 UIDP/50006/2020 Grant 21 15-1
dc.description.abstractRecently, radiocarbon dating underwent considerable technological advances allowing unprecedented sample size downscaling. These achievements introduced novel opportunities in dating cultural heritage objects. Within this pioneering research, the possibility of a direct 14C dating of lead white pigment and organic binder in paint samples was investigated on polychrome sculptures, a foremost artistic expression in human history. The polychromy, an indivisible part of polychrome sculpture, holds a key role in the interpretation and understanding of these artworks. Unlike in other painted artworks, the study of polychromies is repeatedly hampered by repaints and degradation. The omnipresence of lead white within the original polychromy was thus pursued as dating proxy. Thermal decomposition allowed bypassing geologic carbonate interferences caused by the object's support material, while an added solvent extraction successfully removed conservation products. This radiocarbon dating survey of the polychromy from 16 Portuguese medieval limestone sculptures confirmed that some were produced within the proposed chronologies while others were revised. Within this multidisciplinary study, the potential of radiocarbon dating as a complementary source of information about these complex paint systems guiding their interpretation is demonstrated. The challenges of this innovative approach are highlighted and improvements on sampling and sample preparation are discussed.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent1410730
dc.identifier.doi10.1038/s41598-021-91814-y
dc.identifier.issn2045-2322
dc.identifier.otherPURE: 32693693
dc.identifier.otherPURE UUID: c0d57116-9129-49b5-a5b2-e36e928ba316
dc.identifier.otherScopus: 85108801332
dc.identifier.otherPubMed: 34168176
dc.identifier.otherPubMedCentral: PMC8225632
dc.identifier.otherWOS: 000670723800013
dc.identifier.otherORCID: /0000-0003-3328-6749/work/101442277
dc.identifier.urihttp://hdl.handle.net/10362/126074
dc.identifier.urlhttps://www.scopus.com/pages/publications/85108801332
dc.language.isoeng
dc.peerreviewedyes
dc.subjectGeneral
dc.subjectSDG 11 - Sustainable Cities and Communities
dc.titleRadiocarbon dating of lead whiteen
dc.title.subtitlenovel application in the study of polychrome sculptureen
dc.typejournal article
degois.publication.issue1
degois.publication.titleScientific Reports
degois.publication.volume11
dspace.entity.typePublication
rcaap.rightsopenAccess

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