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.
Sci Rep. 2021 Jan 14;11(1):1361. doi: 10.1038/s41598-020-80462-3.
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) and portlandite (Ca(OH)) 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.
互补的光学和基于中子的振动光谱技术（红外、拉曼和非弹性中子散射）被应用于在有氧或无氧条件下同时燃烧的人体骨骼（股骨和肱骨）的研究，温度范围很广（400 到 1000°C）。这是第一次在缺氧气氛中加热人体骨骼遗骸的 INS 研究。在两种类型的样本之间观察到了明显的差异，即在无氧燃烧（在未密封的容器中）的骨骼中羟基磷灰石的 OH 振动带缺失，而在这些还原条件下存在氰氨（NCNH）和氢氧化钙（Ca(OH)）。这些结果有望更好地理解在不同环境条件下热量对骨骼成分的影响，从而有助于准确地描述在不同氧气供应情况下发现的法医和考古学人类骨骼遗骸。
