PRELIMINARY RAMAN MICROSCOPIC ANALYSES OF A LICHEN ENCRUSTATION INVOLVED IN THE BIODETERIORATION OF RENAISSANCE FRESCOES IN CENTRAL ITALY

被引:48
作者
EDWARDS, HGM
FARWELL, DW
SEAWARD, MRD
GIACOBINI, C
机构
[1] Department of Environmental Science, University of Bradford, Bradford
[2] Istituto Centrale del Restauro, 00184 Roma
来源
INTERNATIONAL BIODETERIORATION | 1991年 / 27卷 / 01期
关键词
D O I
10.1016/0265-3036(91)90019-N
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Raman microscopic analysis has proved effective in the interpretation and characterization of both the physical and chemical nature of the lichen/substratum system. In the case of Dirina massiliensis forma sorediata, a lichen causing extensive damage to Italian frescoes, the lichen-generated encrustation has been proved to be composed essentially of calcium oxalate. This particular biodeterioration process may be slowed down, or indeed inhibited, by the presence of certain compounds, as yet undetermined, used in the preparation of surfaces and the painting of frescoes. From a conservator's point of view. Raman microscopic analysis uses microscopic samples in the nanogram-picogram range and is non-destructive of the sample.
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页码:1 / 9
页数:9
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