Polixenia Georgeta POPESCU, Cristian Enache-PREOTEASA,  Florin Dinu Badea, Emanoil Pripon, Maria Maganu<br>GC-MS Spectroscopy as Valuable Tool for the Study <br>of Archaeological Ceramics

Polixenia Georgeta POPESCU, Cristian Enache-PREOTEASA, Florin Dinu Badea, Emanoil Pripon, Maria Maganu
GC-MS Spectroscopy as Valuable Tool for the Study
of Archaeological Ceramics

Abstract:

The identification of organic materials present in archeological findings by spectroscopic methods is important due to the information that can provide useful data both in archeological research and in the restoration and preservation activities. Organic materials can be easily preserved on a ceramic support. This paper presents analytical results of microsamples taken from the surface of two neolithic ceramic fragments, found at the “Porţ Corău” archaeological site. The fragments are decorated with a black colored layer, assumed to be natural bitumen due to the geographic area in which the fragments were excavated. The microsamples were characterized by means of gas chromatography coupled with mass spectrometry (GC-MS) and compared with reference samples. The analysis strategy being based on the detection of characteristic biomarkers. The results presented in this study were also supported by Fourier transform-infrared spectroscopy (FT-IR). Based on the analysis it can be concluded that the black layer is organic in nature, being a mixture of birch bark tar with natural bitumen. This mixture is predominantly composed of birch bark tar. Keywords: GC-MS, birch bark tar, natural bitumen, Neolithic decorated ceramic

Issue: 2012, Volume 63, Issue 5

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