Profiling of human burned bones: oxidising versus reducing conditions.

Autor: Marques MPM; Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal.; Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal., Gonçalves D; Laboratory of Forensic Anthropology, Centre for Functional Ecology, University of Coimbra, 3000-456, Coimbra, Portugal.; Research Centre for Anthropology and Health (CIAS), University of Coimbra, 3000-456, Coimbra, Portugal.; Archaeosciences Laboratory, Directorate General Cultural Heritage (LARC/CIBIO/InBIO), 1349-021, Lisbon, Portugal., Mamede AP; Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal., Coutinho T; Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal., Cunha E; Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal.; Laboratory of Forensic Anthropology, Centre for Functional Ecology, University of Coimbra, 3000-456, Coimbra, Portugal., Kockelmann W; ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK., Parker SF; ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK., Batista de Carvalho LAE; Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal. labc@ci.uc.pt.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2021 Jan 14; Vol. 11 (1), pp. 1361. Date of Electronic Publication: 2021 Jan 14.
DOI: 10.1038/s41598-020-80462-3
Abstrakt: Complementary optical and neutron-based vibrational spectroscopy techniques (Infrared, Raman and inelastic neutron scattering) were applied to the study of human bones (femur and humerus) burned simultaneously under either aerobic or anaerobic conditions, in a wide range of temperatures (400 to 1000 °C). This is the first INS study of human skeletal remains heated in an oxygen-deprived atmosphere. Clear differences were observed between both types of samples, namely the absence of hydroxyapatite's OH vibrational bands in bone burned anaerobically (in unsealed containers), coupled to the presence of cyanamide (NCNH 2 ) and portlandite (Ca(OH) 2 ) in these reductive conditions. These results are expected to allow a better understanding of the heat effect on bone´s constituents in distinct environmental settings, thus contributing for an accurate characterisation of both forensic and archaeological human skeletal remains found in distinct scenarios regarding oxygen availability.
Databáze: MEDLINE
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