Raman spectroscopic analysis of Mexican natural artists’ materials

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• 作者：Peter V ; enabeele ; Mayahuel Ortega-Avilè ; s ; Dolores Tenorio Castilleros ; Luc Moens
• 关键词：Art analysis ; Raman spectroscopy ; Mexican materials ; Restoration ; Natural artists’ ; materials ; Binding medium ; Resins ; Gums ; Bitumen
• 刊名：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
• 出版年：2007
• 出版时间：15 December 2007
• 年：2007
• 卷：68
• 期：4
• 页码：1085-1088
• 全文大小：416 K

文摘

This work represents the Raman spectra of 15 natural artists’ materials that were obtained from local market in Mexico. Some of these products are not endemic to the region, but are often used in local conservation practice. Other materials are of local origin and have been used for centuries by local craftsmen. The Raman spectra that are reported here are: Chia oil, linseed oil, Campeche wax, beeswax, white copal, dammar, colophony, mastic, pixoy, chapopote, chucum, aje gum, gutta gum, peach gum and gum Arabic. The sample of pixoy was mixed with TiO₂, although it was not clear whether this was done intentionally or not. The Raman spectrum of chapopote, the local name for bitumen, contained features of carbonaceous and terpenoid matter. The Raman spectra of chapopote and chucum suffered severely from fluorescence, resulting in noisy Raman spectra. Aje gum and gutta gum are not gums, since they are resinous (terpenoid) in nature. Aje is a rare animal resin originating from Coccus axin.