New Raman spectroscopy reference spectra help identify ancient carbon-based black pigments
In short: Researchers studying carbon-based black pigments found that Raman spectroscopy can provide essential reference spectra for identifying materials used in art. By analyzing various reference materials, the study demonstrated that while all pigments showed two broad carbon bands, specific excitation conditions were sometimes necessary to capture high-quality data.
Identifying different types of black pigments is often difficult due to a lack of standardized names and reference spectra. This study used Raman spectroscopy to analyze reference materials, offering a non-destructive way to examine particles as small as 1 µm.
The researchers focused on the structural implications of both natural and artificial pigments, though the study's scope was limited to the analysis of reference materials rather than specific historical artifacts.
Why it matters: New spectral data can help art historians more accurately identify the composition of black pigments in artworks.
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Sources
- Summary by Intellect · source: Research: Coccato et al. (2015). Raman spectroscopy for the investigation of carbon‐based black pigments. Journal of Raman Spectroscopy.
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