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Analysis of ambers with different origin by IR and py/GC/MS
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2011, v.24 no.4, pp.256-265
https://doi.org/10.5806/AST.2011.24.4.256
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(2011). Analysis of ambers with different origin by IR and py/GC/MS. Analytical Science and Technology, 24(4), 256-265, https://doi.org/10.5806/AST.2011.24.4.256
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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 ℃ with the on-line derivatization to trimethylsilyl ester. Baltic shoulder corresponding to the absorption at 1250 cm^(−1)~ 1150 cm^(−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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