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Rare biogeochemical phenomenon associated to manganese patinas on mural painting and granite ashlars

2021-08Journal article Open access
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dc.contributor.authorCampos, Bruno
dc.contributor.authorMarco, Alexandra
dc.contributor.authorFreire-Lista, David M.
dc.contributor.authorDurães, Nuno
dc.contributor.authorSilvestre-Albero, Joaquin
dc.contributor.authorSilva, Eduardo Ferreira da
dc.contributor.authorVieira, Eduarda
dc.contributor.authorPintado, Manuela
dc.contributor.authorMoreira, Patrícia R.
dc.date.accessioned2021-09-02T14:52:05Z
dc.date.available2021-09-02T14:52:05Z
dc.date.issued2021-08
dc.description.abstractThis article discloses a rare and outstanding type of Mn-rich black-blue patina found on mural painting and granite ashlars located in the church of Sta. Marinha, north of Portugal, and conjectures the phenomenon associated to the appearance of such patinas in different surface materials. This Mn-patina reported on mural painting and their origin is probably assigned to manganese leaching from building materials (i.e., granite and phyllites). Stained mural painting and granite examined by XPS and SEM have showed patinas enriched with manganese (IV) oxide, potentially catalysed by a microbiota, like fungi, observed in SEM micrographs. The pigments used to depict mural painting and groundwater were also analysed by micro-Raman and ICP-MS, respectively, indicating that they are unlikely manganese sources. Unstained building materials, such as granite ashlars, historic joints, mortars and phyllite rocks, were also analysed by ICP-MS showing that historic joints and mortars present significant concentrations of manganese, possibly associated to their absorbing feature. The main materials with potential to impart manganese to Mn-rich patinas are granite ashlars and phyllites. The aim of this investigation is to reveal and ascertain the hypothetical sources and the phenomenon responsible for the Mn-rich black-blue patina appearance, both on mural painting and granite ashlars.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/coatings11080917pt_PT
dc.identifier.eid85112596723
dc.identifier.issn2079-6412
dc.identifier.urihttp://hdl.handle.net/10400.14/34618
dc.identifier.wos000688944900001
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBiogenic patinapt_PT
dc.subjectManganese patinapt_PT
dc.subjectStained mural paintingpt_PT
dc.subjectWeatheringpt_PT
dc.titleRare biogeochemical phenomenon associated to manganese patinas on mural painting and granite ashlarspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue8pt_PT
oaire.citation.titleCoatingspt_PT
oaire.citation.volume11pt_PT
person.familyNameMarco
person.familyNameFreire
person.familyNameDurães
person.familyNameSilvestre Albero
person.familyNameFerreira da Silva
person.familyNameVieira
person.familyNamePintado
person.familyNameMoreira
person.givenNameAlexandra
person.givenNameDavid M
person.givenNameNuno
person.givenNameJoaquin
person.givenNameEduardo
person.givenNameEduarda
person.givenNameMaria Manuela
person.givenNamePatrícia
person.identifier92370
person.identifier456608
person.identifier.ciencia-idA911-517A-8879
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person.identifier.orcid0000-0003-2582-6186
person.identifier.orcid0000-0002-6411-4002
person.identifier.orcid0000-0003-2834-043X
person.identifier.orcid0000-0002-0303-0817
person.identifier.orcid0000-0002-3019-8471
person.identifier.orcid0000-0002-0620-080X
person.identifier.orcid0000-0002-0760-3184
person.identifier.orcid0000-0002-0004-851X
person.identifier.ridN-7373-2013
person.identifier.ridH-2000-2016
person.identifier.ridB-3317-2012
person.identifier.ridF-5696-2013
person.identifier.scopus-author-id56520290700
person.identifier.scopus-author-id12140132100
person.identifier.scopus-author-id55912514200
person.identifier.scopus-author-id6602213683
person.identifier.scopus-author-id55912754800
person.identifier.scopus-author-id7004483898
person.identifier.scopus-author-id7006510563
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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