Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9757057 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2005 | 7 Pages |
Abstract
This paper presents a new totally non-destructive methodology, for the identification of protein-based materials, tortoiseshell, horn and galalith, on heritage objects. Attenuated total reflexion (ATR) infrared spectroscopy combined to a deconvolution procedure of amide I band was performed to characterize the secondary structure of these materials and allows us to identify each material. The component at 1639Â cmâ1, attributed to the amide group involved in hydrated random-coil domains, allows us to distinguish horn from galalith and tortoiseshell. A second component, at 1614Â cmâ1, assigned to amide group involved in protein self-association, allows us to differentiate galalith and tortoiseshell. This differentiation is applicable to both raw and manufactured materials. Then, we applied our models to identify what unknown object was made of.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Céline Paris, Sophie Lecomte, Claude Coupry,