Characteristic burn temperature markers of bones as revealed by electron paramagnetic resonance

This research paper presents a novel methodology for determining the burn temperature of archaeological bones using electron paramagnetic resonance (EPR) supported by Fourier Transform Infrared (FTIR) spectroscopy. A selection of bone samples, burned at different temperatures, were examined with EPR...

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Bibliographic Details
Published in:Heritage science 2024-05, Vol.12 (1), p.165-9, Article 165
Main Authors: Knaflič, Tilen, Legan, Lea, Cavalli, Fabio, Ropret, Polonca
Format: Article
Language:English
Subjects:
Archaeological bones
Bones
Burn temperature
Burnt bones
Carbon
Chemistry and Materials Science
Cultural heritage
Electron paramagnetic resonance
Electrons
EPR spectroscopy
Fourier transforms
Infrared spectroscopy
IPERION HS: Integrating Platforms for the European Research Infrastructure on Heritage Science
Materials Science
Reflection FTIR spectroscopy
Spectra
Temperature
Temperature dependence
Thermal degradation
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Summary:This research paper presents a novel methodology for determining the burn temperature of archaeological bones using electron paramagnetic resonance (EPR) supported by Fourier Transform Infrared (FTIR) spectroscopy. A selection of bone samples, burned at different temperatures, were examined with EPR. The EPR spectra displayed dependency on burn temperature, showing characteristic narrow spectra of carbon radicals, Mn 2 + signals and signals from different carbonate ions. This methodology was applied to selected archaeological samples of burnt bones, successfully determining the burn temperature these bones were exposed to in the past. The extracted burn temperatures showed good agreement with those determined from a complementary reflectance FTIR study.
ISSN:2050-7445
2050-7445
DOI:10.1186/s40494-024-01276-4