期刊
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
卷 8, 期 6, 页码 835-852出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15583058.2012.751466
关键词
multi-analytical methodology; pigment characterization; biodegradation activity assessment; dehydrogenase measurement; mural paintings
资金
- Fundacao para a Ciencia e Tecnologia [SFRH/BD/65747/2009, SFRH/BPD/63552/2009]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/63552/2009, SFRH/BD/65747/2009] Funding Source: FCT
The aim of this work is the material characterization of wall paintings and biodegradation assessment, including the analysis of microbial growth and the effect of microbial proliferation, in view of their conservation. The methodology was applied to the study of frescoes dated from 1531, located in the ancient parish church of Santo Aleixo, Southern Portugal. The combined use of optical microscopy, scanning electron microscopy coupled with energy dispersive X-ray spectrometry (SEM-EDS) and - X-ray diffraction (XRD) showed that the painting palette is composed of red and yellow ochers, malachite, azurite, and bone black. The pigments do not show signs of chemical deterioration, except for malachite, which transformed to black copper oxide (tenorite). The microbiological study allowed the identification of several bacterial strains (e.g., Gram+ cocci, Gram+ bacilli, Actinomycetes sp.), yeast strains, and filamentous fungi of the genera Penicillium, Cladosporium and Aspergillus, among others of the microflora present in the paintings. Their metabolic activity is primarily responsible for the physical disruption of paint layers and underlying mortars. The combined approach using SEM analysis and enzymatic dehydrogenase measurement allowed the evaluation of microflora proliferation and diagnosis of the biodeterioration of the mural paintings. Additionally, the effect of some commercial biocides was evaluated for the predominant strains in order to select the most efficient biocide.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据