Versão em português
N.º 32
2019
pp. 50-64

 

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Article
What is the origin of the black film in the sculpture "Death of Cleopatra"?

Pedro Azevedo1,*, Maria Filomena Macedo1,2 , Amélia Dionísio3 

1 Departamento de Conservação e Restauro, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal

2 VICARTE, Unidade de investigação Vidro e Cerâmica para as Artes, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-529 Caparica, Portugal

3 CERENA, Centro de Recursos Naturais e Ambiente, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal

* pedrozenesis@gmail.com

Abstract

This work arises from the need to identify the origin of a black film which is currently covering a large area of the sculpture Death of Cleopatra, promoting its disfiguration. This piece, sculpted in Carrara marble, belongs to Tropical Botanic Garden, in Lisbon. In situ works involved colorimetric measurements, adhesion tests and mapping of decay patterns. Samples of the black film were taken from the sculpture and also from black areas present in botanic species surrounding the sculpture, which were observed macro and microscopically. Individual samples of the black film were analysed by Fourier-transform infrared spectroscopy. The results obtained show the collected samples possess saccharides such as sucrose, found in honeydew exemplars. Therefore, it is proposed that black film formation is due to sooty mould. This black film is responsible for aesthetic damage, as well as stone corrosion processes, which was observed by scanning electron microscopy.

Keywords

Death of Cleopatra
Carrara marble
Black film
Sooty Mould
Biocorrosion

Language

Portuguese

Original title

Qual a origem do filme negro da escultura "Morte de Cleópatra"?

DOI

10.14568/cp2018047

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Citation

Conservar Património | APA | Chicago | NP405 | ABNT

Conservar Património:
Azevedo, P.; Macedo, M. F.; Dionísio, A., 'Qual a origem do filme negro da escultura "Morte de Cleópatra"?', Conservar Património 32 (2019) 50-64, https://doi.org/10.14568/cp2018047.

APA:
Azevedo, P., Macedo, M. F., & Dionísio, A. Qual a origem do filme negro da escultura "Morte de Cleópatra"?. Conservar Património 32:50-64. DOI:10.14568/cp2018047.

Chicago:
Azevedo, Pedro, Maria Filomena Macedo, and Amélia Dionísio. "Qual a origem do filme negro da escultura "Morte de Cleópatra"?." Conservar Património 32:50-64. doi:10.14568/cp2018047.

NP405:
AZEVEDO, Pedro [et al.] – Qual a origem do filme negro da escultura "Morte de Cleópatra"?. Conservar Património. [Em linha]. 32 (2019) 50-64 [Consult. ]. Disponível em WWW: <URL:https://doi.org/10.14568/2018047>. ISSN 21829942.

ABNT:
AZEVEDO, Pedro; MACEDO, Maria Filomena; DIONÍSIO, Amélia. Qual a origem do filme negro da escultura "Morte de Cleópatra"?. Conservar Património, Lisboa, v. 32, p. 50-64, 2019. Disponível em: <https://doi.org/10.14568/cp2018047>. Acesso em: .

History

Received: 2018-10-31
Revised: 2019-1-11
Accepted: 2019-1-13
Online: 2019-3-25

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Stable url: https://doi.org/10.14568/cp2018047

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