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Comparative Study
. 2014;121:613-22.
doi: 10.1016/j.saa.2013.10.098. Epub 2013 Nov 7.

Identification of Archaeological Triterpenic Resins by the Non-Separative Techniques FTIR and 13C NMR: The Case of Pistacia Resin (Mastic) in Comparison With Frankincense

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Comparative Study

Identification of Archaeological Triterpenic Resins by the Non-Separative Techniques FTIR and 13C NMR: The Case of Pistacia Resin (Mastic) in Comparison With Frankincense

Silvia Bruni et al. Spectrochim Acta A Mol Biomol Spectrosc. .

Abstract

The use of spectroscopic techniques such as Fourier-transform infrared (FTIR) spectroscopy and carbon 13 nuclear magnetic resonance ((13)C NMR) using the J-mod experiment is proposed as an effective alternative to gas chromatography-mass spectrometry (GC-MS) for the analysis and identification of natural resin samples found in archaeological environments. The spectral features of the most common diterpenic and triterpenic resins and also two gum-resins are reported and discussed for both techniques. The analytical procedure based on the combined use of FTIR and (13)C NMR is then applied to two archaeological samples from the Milano of the Roman age allowing their identification as Pistacia resin, or mastic, as confirmed by the traditional GC-MS method, and also elucidating some effects of aging on such material.

Keywords: (13)C NMR; Archaeology; FTIR; Natural resins.

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