Pigment analysis of Portuguese portrait miniatures of 17th and 18th centuries by Raman Microscopy and SEM-EDS
Pigment analysis of Portuguese portrait miniatures of 17th and 18th centuries by Raman Microscopy and SEM-EDS
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DOI：
10.1002/jrs.4570
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发表时间：
2014-10-01
影响因子：
2.5
通讯作者：
Teixeira, Jorge Ginja
中科院分区：
文献类型：
--
作者：
Veiga, Alfredina;Mirao, Jose;Teixeira, Jorge Ginja
用拉曼显微镜(RM)、扫描电子显微镜(SEM-EDS)和立体显微镜对埃沃拉博物馆(葡萄牙)收藏的17幅葡萄牙铜托微型肖像进行了原位和非破坏性分析。这部作品是17世纪和18世纪微型绘画研究的一大突破，因为关于这类独特绘画的化学信息仍然很少，尤其是这种独家收藏从未进行过任何物理化学研究。在这项工作中，每一幅肖像画都经过了详细的检查，以确定微型师使用的颜料调色板的特征。尤其是拉曼分析，确保了对小颗粒颜料和图像层的其他成分的特殊可视化和良好的个体识别。使用这项技术，鉴定出了19种化合物，其中包括蓝黑色Covellite，一种在油画中很少发现的颜料。用扫描电子显微镜-能谱仪作为一种重要的辅助技术来确定一些颜料的化学性质，并在一些肖像中识别壳金(金粉)。总体而言，在这一大套古画中发现的颜料与当时绘画论文中提到的或其他更现代的书目来源中所报道的颜料大致一致。版权所有(C)2014 John Wiley&Sons，Ltd.
Seventeen Portuguese miniature portraits on copper support from the Evora Museum collection (Portugal) were analyzed in situ and nondestructively by Raman microscopy (RM), SEM-EDS, and stereomicroscopy. This work constitutes a great breakthrough in the study of miniature paintings from the 17(th) and 18(th) centuries, since the chemical information known about this unique kind of paintings are still scarce, and in particular, this exclusive collection was never been subjected to any physicochemical study. In this work, each portrait was examined in detail in order to characterize the pigments palette used by the miniaturists. The -Raman analysis, in particular, guaranteed an exceptional visualization and good individual identification of small grains of pigments and other constituents of the pictorial layer. Using this technique, 19 compounds were identified, including bluish black covellite, a pigment rarely found in oil paintings. SEM-EDS was used as an important complementary technique to confirm the chemical nature of some pigments and to identify shell gold (gold dust) in some portraits. Overall, the pigments identified in this large set of old paintings are broadly consistent with those mentioned in the painting treatises of that time or reported in other more modern bibliographic sources. Copyright (c) 2014 John Wiley & Sons, Ltd.