Institute of Chemistry, University of Tartu, Tartu, Estonia.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Mar;75(3):1061-72. doi: 10.1016/j.saa.2009.12.056. Epub 2009 Dec 24.
A comprehensive study of ATR-FT-IR spectra of 40 inorganic pigments of different colours widely used in historical paintings has been carried out in the low wave number spectral range (550-230 cm(-1)). The infrared spectra were recorded from mixtures of pigment and linseed oil. It is demonstrated that this spectral range - essentially devoid of absorption peaks of the common binder materials - can be well used for identification of inorganic pigments in paint samples thereby markedly extending the possibilities of pigment identification/confirmation by ATR-IR spectroscopy into the realm of pigments having no absorptions in the mid-IR region. In some cases the method can be used alone for pigment identification and in many cases it provides useful additional evidence for pigment identification using other instrumental techniques (electron microprobe analysis, XRF, optical microscopy). Together with earlier work this study provides a comprehensive overview of the pigment identification possibilities using ATR-FT-IR as well as a collection of reference spectra and is expected to be a useful reference for conservation practitioners.
对广泛用于历史绘画的 40 种不同颜色的无机颜料的 ATR-FT-IR 光谱进行了全面研究，研究范围在低波数光谱区（550-230 cm(-1))。红外光谱是从颜料和亚麻籽油的混合物中记录的。结果表明，这个光谱范围 - 基本上没有常见粘结材料的吸收峰 - 可以很好地用于鉴定油漆样品中的无机颜料，从而显著扩展了ATR-IR 光谱在没有中红外区域吸收的颜料的鉴定/确认领域的可能性。在某些情况下，该方法可以单独用于颜料鉴定，在许多情况下，它为使用其他仪器技术（电子探针分析、XRF、光学显微镜）进行颜料鉴定提供了有用的补充证据。这项研究与早期的工作一起，提供了使用 ATR-FT-IR 进行颜料鉴定的可能性的全面概述，以及参考光谱集，有望成为保护从业者的有用参考。
