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Why to Identify Dyestuffs in Cultural Relics and Artworks by Raman Spectroscopy

ATR3110 irradiates the sample with 1064nm near-infrared laser, collects signals by Fourier transform technology, improves the signal-to-noise ratio of the test, and solves the problems of photochemical decomposition, thermal effect, and fluorescence effect that exist in the analysis of dyes by MRS.

The identification of dyeing materials in ancient cultural relics and works of art helps to understand the age of their production, the source of raw materials and the dyeing process. In addition, because organic dyes are prone to aging, the identification can also help to understand the preservation of the dyes, which has important guiding significance for later restoration and protection.

However, due to the complex composition and low content of dyes, and some chemical components have changed during long-term storage, its identification has always been a difficult point in the field of cultural relic analysis.So, why to use Raman spectroscopy to identify dyestuffs in cultural relics and artworks?

First, the surface enhancement effect produced by silver sol particles can significantly reduce the fluorescence background of Raman spectroscopy. Second, the application of multi-channel detectors represented by CCD can significantly enhance the integration and accumulation effect of Raman signals, reaching mg·L-1 or mmol· L-1 order of magnitude.Therefore, Raman spectroscopy technology can realize the authenticity of artworks.

Near-infrared Fourier Transform Raman Spectroscopy is a new technology developed in the 1980s and 1990s. The ATR3110 from Optosky irradiates the sample with a 1064nm near-infrared laser, collects the signal using Fourier transform technology, improves the signal-to-noise ratio of the test, and solves the problems of photochemical decomposition, thermal effect, and fluorescence effect that exist when MRS analyzes dyes.The ATR3110 from Optosky is the best choice to identify dyestuffs in cultural relics and artworks.

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