Micro-analytical study of two 17th century gilded miniature portraits on copper
Micro-analytical study of two 17th century gilded miniature portraits on copper
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对两幅 17 世纪铜质镀金微型肖像的微观分析研究
DOI：
10.1016/j.microc.2015.05.015
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发表时间：
2015
影响因子：
4.8
通讯作者：
J. G. Teixeira
中科院分区：
文献类型：
--
作者：
A. Veiga;D. Teixeira;A. Candeias;J. Mirão;A. Manhita;C. Miguel;Paulo Rodrigues;J. G. Teixeira
通过立体显微镜、μ-拉曼光谱、SEM-EDS、便携式 XRF (pXRF)、μ-FTIR 光谱以及结合二极管阵列和质谱检测 (LC-DAD-MS) 的液相色谱对埃武拉博物馆藏品（葡萄牙）的两幅镀金微型肖像进行了检查和分析。这两幅肖像画，一幅是一位绅士，另一幅是一位女士，都是具有相当丰富性的著名画作，其中有几个区域被涂上或覆盖着黄金（即，用金粉来构成和突出不同的装饰品，用金箔覆盖其中一幅肖像的背面）。使用立体显微镜、SEM-EDS、pXRF 和 μ-FTIR 对金粉、金箔和镀金技术中使用的材料进行非侵入性和非破坏性研究。画作中的其他材料，如无机颜料和体质材料，均通过μ-拉曼光谱成功鉴定，而有机红色颜料胭脂虫色淀则通过LC-DAD-MS得到肯定鉴定。总体而言，这些 17 世纪绘画中发现的材料与当时的绘画论文中提到的材料大致一致，或者与针对同类和同一时期的艺术品的极少数材料研究中报道的材料大致一致。
Two gilded miniature portraits on copper support from the Evora Museum collection (Portugal) were examined and analysed by stereomicroscopy, μ-Raman spectroscopy, SEM–EDS, portable-XRF (pXRF), μ-FTIR spectroscopy and liquid chromatography coupled to diode array and mass spectrometry detection (LC-DAD-MS). Both portraits, one of a gentleman and the other of a lady, are notable paintings of comparable richness, which present several areas painted or covered with gold (namely, gold dust to compose and highlight different ornaments and gold leaf to cover the back of one of the portraits). The gold dust, the gold leaf and the materials used in the gilding technique were investigated non-invasively and non-destructively using stereomicroscopy, SEM–EDS, pXRF and μ-FTIR. The other materials of the paintings, like the inorganic pigments and extenders, were successfully identified by μ-Raman spectroscopy, while the organic red pigmentcochineal lakewas positively identified by LC-DAD-MS. Overall, the materials identified in these 17th century paintings are broadly consistent with those mentioned in the painting treatises of that time, or with those reported in a very limited number of material studies focused on artworks of the same kind and period.