ATR-FTIR imaging for the analysis of organic materials in paint cross sections: case studies on paint samples from the National Gallery, London
ATR-FTIR imaging for the analysis of organic materials in paint cross sections: case studies on paint samples from the National Gallery, London
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DOI：
10.1007/s00216-008-2092-y
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发表时间：
2008-09-01
影响因子：
4.3
通讯作者：
Kazarian, Sergei G.
中科院分区：
文献类型：
--
作者：
Spring, Marika;Ricci, Camilla;Kazarian, Sergei G.
研究了衰减全反射傅里叶变换红外 (ATR-FTIR) 成像在表征古代大师画作的油漆横截面化学成分方面的潜力。选择三个横截面来涵盖绘画样本中遇到的各种分析问题。对一幅 15 世纪佛罗伦萨绘画的绿色油漆样品中的粘合介质和降解产物、一幅 15 世纪德国绘画横截面内的薄层以及彼得·罗姆尼 1760 年代绘画上的多个薄表面涂层进行了成像。还探索了应用化学计量方法进一步分析每个样品生成的大数据集。该研究证明了 ATR-FTIR 成像的优势，无需对样品进行切片机即可获得高空间分辨率（约 3-4 μm）的图像。检测痕量物质的灵敏度以及从样品中这些化合物的位置获得的信息尤其有价值，这可以改善 FTIR 分析的解释，并扩展对样品成分的了解，超出其他分析技术所能获得的范围。
The potential of attenuated total reflection Fourier transform infrared (ATR-FTIR) imaging for the characterisation of the chemical components of paint cross sections from old master paintings was investigated. Three cross sections were chosen to cover a variety of the analytical problems encountered in samples from paintings. The binding medium and degradation products in a green paint sample from a fifteenth-century Florentine painting were imaged, as well as a thin layer within a cross-section from a fifteenth-century German painting, and multiple thin surface coatings on a painting of the 1760s by Peter Romney. The application of chemometric methods for further analysis of the large data set generated for each sample was also explored. The study demonstrated the advantages of ATR-FTIR imaging, which allowed images to be obtained with high spatial resolution (ca. 3-4 mu m) without the need to microtome the sample. The gain in sensitivity in detecting trace materials and the information derived from the location of these compounds in the sample was especially valuable, improving interpretation of the FTIR analysis and extending knowledge of the sample composition beyond that obtainable with other analytical techniques.