Temperature-specific spectral shift of luminescing thermally altered human remains.

Autor: Schariatmadary P; Amsterdam UMC location University of Amsterdam, Biomedical Engineering and Physics, Amsterdam, The Netherlands., Aalders MCG; Amsterdam UMC location University of Amsterdam, Biomedical Engineering and Physics, Amsterdam, The Netherlands., Oostra RJ; Amsterdam UMC location University of Amsterdam, Medical Biology, Section Clinical Anatomy and Embryology, Amsterdam, The Netherlands., Krap T; Amsterdam UMC location University of Amsterdam, Biomedical Engineering and Physics, Amsterdam, The Netherlands. t.krap@maastrichtuniversity.nl.; Amsterdam UMC location University of Amsterdam, Medical Biology, Section Clinical Anatomy and Embryology, Amsterdam, The Netherlands. t.krap@maastrichtuniversity.nl.; Faculty of Law and Criminology, Maastricht Institute for Criminal Studies (MICS), Maastricht University, Maastricht, The Netherlands. t.krap@maastrichtuniversity.nl.
Jazyk: angličtina
Zdroj: International journal of legal medicine [Int J Legal Med] 2023 Jul; Vol. 137 (4), pp. 1277-1286. Date of Electronic Publication: 2023 May 13.
DOI: 10.1007/s00414-023-03006-0
Abstrakt: Human bone has shown to have luminescent properties that remain throughout the phases of cremation, with the exception of fully carbonized bone, when excited with a narrow band light source. During this research, an alternate light source (420-470nm, peak at 445nm) was used to visualize and investigate latent details relevant for forensic investigations of human remains recovered at fire scenes. As fire is a destructive force, it induces a vast variety of physical and chemical alterations to all components of the bone, making the subsequent analysis and interpretation of burned human remains challenging. A spectral shift in emission bandwidth, from green to red, was previously observed when the exposure temperature increased from 700 to 800 °C. This spectral shift was reproduced on a total of 10 human forearms, divided into 20 segments, by burning at 700 °C and 900 °C in an ashing furnace. The shift of emission bandwidth caused only by an increase in temperature was furthermore investigated by colorimetric analysis, proving the spectral shift to be significant. By easily quantifying the spectral shift, substantiation is provided for the use of this technique in practice to improve the interpretation of heat induced changes of bone.
(© 2023. The Author(s).)
Databáze: MEDLINE
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