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首页> 外文期刊>Analytical chemistry >Combined X-ray Diffraction and Raman Identification of Synthetic Organic Pigments in Works of Art: From Powder Samples to Artists' Paints
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Combined X-ray Diffraction and Raman Identification of Synthetic Organic Pigments in Works of Art: From Powder Samples to Artists' Paints

机译：艺术品中合成有机颜料的X射线衍射和拉曼光谱相结合：从粉末样品到艺术家的绘画

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摘要

X-ray diffraction (XRD) complemented by Raman spectroscopy analyses of synthetic organic pigments in powder samples, layered paint systems, and commercial artists' paints bound in acrylic, alkyd, and oil media are presented. The potential and limitations of the techniques to identify and characterize mixtures of these pigments, along with inorganic extenders, in works of art are exemplified and discussed. Stratified model paint systems that mimic the layering structure typically found in modern paintings are used to evaluate the effect of the (mu)XRD experimental parameters, as well as extenders or fillers commonly found in modern artists' paint formulations, on the quality of the patterns recorded in micro-samples of paint XRD is demonstrated for the first time to be an effective tool for the specific identification of synthetic organic pigment mixtures and fillers in acrylic and alkyd bound artists' paints, while the identification of these pigments by XRD in oil bound paints appears problematic. Detailed crystallographic information provided by XRD is shown to be complementary to molecular information provided by Raman analysis. The combined use of these techniques allows for more frequent unambiguous compound identification than would be possible using one technique alone.
机译：本文介绍了X射线衍射（XRD），辅以拉曼光谱分析法，分析了粉末样品，层状涂料体系和丙烯酸，醇酸和油性介质中粘结的商业艺术家涂料中的合成有机颜料。举例说明并讨论了鉴定和表征这些颜料与无机增量剂的混合物的技术的潜力和局限性。模拟现代绘画中常见的分层结构的分层模型油漆系统用于评估（mu）XRD实验参数以及现代艺术家的油漆配方中常见的增量剂或填充剂对图案质量的影响首次记录在涂料XRD的微样品中的记录是一种有效的工具，可用于特异性鉴定丙烯酸和醇酸粘结的艺术家涂料中的合成有机颜料混合物和填料，而通过XRD在油性粘结中鉴定这些颜料油漆似乎有问题。 XRD提供的详细晶体学信息显示为与拉曼分析提供的分子信息互补。与仅使用一种技术相比，这些技术的组合使用可以更频繁地进行明确的化合物鉴定。

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