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Analysis of ambers with different origin by IR and py/GC/MS

산지별 호박(amber)의 IR 및 py/GC/MS 특성 분석

  • Park, Jong-Seo (Research Division of Restoration Technology, National Research Institute of Cultural Heritage) ;
  • Lim, Yu-Jin (Research Division of Restoration Technology, National Research Institute of Cultural Heritage)
  • 박종서 (국립문화재연구소 복원기술연구실) ;
  • 임유진 (국립문화재연구소 복원기술연구실)
  • Received : 2011.07.06
  • Accepted : 2011.07.29
  • Published : 2011.08.25

Abstract

Ambers have been used as a gemstone and a religious object since the ancient times and found in several archaeological sites in Korea. To prepare an enhanced conservation measures, we surveyed the chemical and spectroscopic properties of the ambers according to the provenance. Total 14 amber samples were collected from 6 different provenances including Baltic, Chiapas, Colombian, Dominican, Fushun and Madagascar amber. Infrared (IR) spectroscopic analysis was conducted for the non-destructive examination of the amber samples. They were also analyzed with pyrolysis/GC/MS (py/GC/MS) at the pyrolysis temperature of $300^{\circ}C$ with the on-line derivatization to trimethylsilyl ester. Baltic shoulder corresponding to the absorption at $1250cm^{-1}{\sim}1150cm^{-1}$ appeared in the IR spectrum of Baltic amber. IR spectra of the other ambers also showed somewhat distinctive characteristic peaks. In py/GC/MS analysis peaks assignable to succinic acid, dehydroabietic acid and pimaric acid were detected, which are known to be the components of the amber. In the meanwhile, the presence of compounds appearing in certain amber will be applied to differentiate the provenances of amber relics if their fragments are available for the analysis. These results are expected to help the confirmation of archaeological amber relics and archaeometric interpretation of provenances and manufacturing techniques.

Keywords

amber;py/GC/MS;IR;provenance

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  2. IR and py/GC/MS examination of amber relics excavated from 6th century royal tomb in Korean Peninsula vol.165, 2016, https://doi.org/10.1016/j.saa.2016.04.015
  3. Analysis of changes in composition of amber with ageing using pyrolysis/GC/MS vol.26, pp.3, 2013, https://doi.org/10.5806/AST.2013.26.3.190
  4. Change of fluorescence in ambers according to artificial aging vol.25, pp.3, 2012, https://doi.org/10.5806/AST.2012.25.3.197