Micro‐Raman spectroscopy of carbon‐based black pigments
Micro‐Raman spectroscopy of carbon‐based black pigments
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DOI：
10.1002/jrs.4159
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发表时间：
2012-11
影响因子：
2.5
通讯作者：
Eugenia P. Tomasini;E. B. Halac;M. Reinoso;E. J. D. Liscia;M. Maier
中科院分区：
文献类型：
--
作者：
Eugenia P. Tomasini;E. B. Halac;M. Reinoso;E. J. D. Liscia;M. Maier
碳基黑色颜料是一组广泛的深色材料，根据使用的起始材料及其制造方法进行分类。拉曼光谱是表征含碳物质的理想技术：结晶碳材料呈现出清晰的峰，可以很容易地进行归属;另一方面，无定形碳材料显示出1300和1600 cm−1之间的宽带。这项工作的目的是通过显微拉曼光谱来区分碳基颜料。研究了由Zecchi提供的五种碳基颜料（灯黑、象牙黑、bistre、沥青和石墨）、两种腐殖土材料[货车Dyck（Kremer）和卡塞尔的土（Zecchi）]和商业木炭。所有样品的拉曼光谱在大约1580和1350 cm−1处显示出特征谱带;然而，在大多数样品中可以观察到位置、宽度和相对强度的明显差异。结果分析表明，显微拉曼光谱允许的歧视，大多数的参考颜料，并允许识别碳基黑色颜料在两个南美殖民地的绘画日期从世纪初。版权所有© 2012约翰威利父子有限公司.
Carbon-based black pigments are a wide group of dark-colored materials, which are classified according to the starting material used and their method of manufacture. Raman spectroscopy is an ideal technique for the characterization of carbonaceous matter: crystalline carbon materials present well-defined peaks, which can be easily assigned; amorphous carbon materials, on the other hand, show broad bands between 1300 and 1600 cm−1. The aim of this work was the discrimination between carbon-based pigments by micro-Raman spectroscopy. Five carbon-based pigments provided by Zecchi (lampblack, ivory black, bistre, bitumen, and graphite), two humic-earth materials [Van Dyck (Kremer) and Earth of Kassel (Zecchi)], and a commercial wood charcoal were studied. Raman spectra of all the samples showed the characteristic bands at approximately 1580 and 1350 cm−1; however, a clear difference in position, width, and relative intensity could be observed for most of the samples. The resulting analysis showed that micro-Raman spectroscopy allowed the discrimination of most of the reference pigments and allowed the identification of carbon-based black pigments in two South American colonial paintings dated from the early 18th century. Copyright © 2012 John Wiley & Sons, Ltd.