The effects of exogenous substances on the color of heated bones.

Autor: Rosa J; Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal.; Department of Life Sciences, Centre for Functional Ecology (CFE), Laboratory of Forensic Anthropology, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal.; Department of Chemistry, Molecular Physical-Chemistry R&D Unit, University of Coimbra, Coimbra, Portugal.; Department of Life Sciences, Research Centre for Anthropology and Health (CIAS), Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal., Batista de Carvalho LAE; Department of Chemistry, Molecular Physical-Chemistry R&D Unit, University of Coimbra, Coimbra, Portugal., Gil FPSC; Department of Chemistry, Molecular Physical-Chemistry R&D Unit, University of Coimbra, Coimbra, Portugal.; Department of Physics, Centre for Physics of the University of Coimbra, University of Coimbra, Coimbra, Portugal., Marques MPM; Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal.; Department of Chemistry, Molecular Physical-Chemistry R&D Unit, University of Coimbra, Coimbra, Portugal., Ferreira MT; Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal.; Department of Life Sciences, Centre for Functional Ecology (CFE), Laboratory of Forensic Anthropology, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal.; Department of Life Sciences, Research Centre for Anthropology and Health (CIAS), Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal., Gonçalves D; Department of Life Sciences, Centre for Functional Ecology (CFE), Laboratory of Forensic Anthropology, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal.; Department of Life Sciences, Research Centre for Anthropology and Health (CIAS), Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal.; Laboratory of Archaeosciences (LARC/CIBIO/InBIO), Direção-Geral do Património Cultural, Calçada do Mirante à Ajuda n°10A, Lisboa, Portugal.
Jazyk: angličtina
Zdroj: American journal of biological anthropology [Am J Biol Anthropol] 2024 Jun; Vol. 184 (2), pp. e24905. Date of Electronic Publication: 2024 Jan 30.
DOI: 10.1002/ajpa.24905
Abstrakt: Objectives: Burned bone coloration has been used for decades to help in the bioanthropological analysis of burned human bones. However, there is a variety of factors that can interfere with the coloration manifested by bones exposed to heat, resulting in colors that differ from the usual black to white gradient. In this study, we evaluated possible causes of unusual coloration changes and hues in burned bone.
Materials and Methods: For that purpose, defleshed fresh pig (Sus scrofa) ribs as well as fresh and dry human clavicles were burned at four different temperatures (500, 700, 900 and 1100°C) in contact with different materials (CaO, Zn, Fe, Cu, Mn, and polyester cloth). Observable color changes were assessed through naked eye observation and description, Munsell color charts, and reflectance spectrophotometry. Additionally, chemical changes in bone were assessed using Fourier-transform infrared spectroscopy in attenuated total reflectance (FTIR-ATR) and x-ray fluorescence (XRF).
Results: Our results showed that some materials did affect usual burned bone coloration (Fe, Mn, Cu, Zn) and correspondent FTIR-ATR and XRF spectra. As for other materials, although no effect on visual bone coloration was observed, they still affected FTIR-ATR and XRF spectra (CaO and cloth).
Discussion: This study can contribute to the anthropological analysis of burned human remains, providing some answers to what can cause unusual types of heat-induced colorations.
(© 2024 The Authors. American Journal of Biological Anthropology published by Wiley Periodicals LLC.)
Databáze: MEDLINE
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