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Temperature-specific spectral shift of luminescing thermally altered human remains

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 investig...

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Autores principales: Schariatmadary, Parnia, Aalders, Maurice C. G., Oostra, Roelof-Jan, Krap, Tristan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10247558/
https://www.ncbi.nlm.nih.gov/pubmed/37178277
http://dx.doi.org/10.1007/s00414-023-03006-0
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author Schariatmadary, Parnia
Aalders, Maurice C. G.
Oostra, Roelof-Jan
Krap, Tristan
author_facet Schariatmadary, Parnia
Aalders, Maurice C. G.
Oostra, Roelof-Jan
Krap, Tristan
author_sort Schariatmadary, Parnia
collection PubMed
description 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. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00414-023-03006-0.
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spelling pubmed-102475582023-06-09 Temperature-specific spectral shift of luminescing thermally altered human remains Schariatmadary, Parnia Aalders, Maurice C. G. Oostra, Roelof-Jan Krap, Tristan Int J Legal Med Original Article 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. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00414-023-03006-0. Springer Berlin Heidelberg 2023-05-13 2023 /pmc/articles/PMC10247558/ /pubmed/37178277 http://dx.doi.org/10.1007/s00414-023-03006-0 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Original Article
Schariatmadary, Parnia
Aalders, Maurice C. G.
Oostra, Roelof-Jan
Krap, Tristan
Temperature-specific spectral shift of luminescing thermally altered human remains
title Temperature-specific spectral shift of luminescing thermally altered human remains
title_full Temperature-specific spectral shift of luminescing thermally altered human remains
title_fullStr Temperature-specific spectral shift of luminescing thermally altered human remains
title_full_unstemmed Temperature-specific spectral shift of luminescing thermally altered human remains
title_short Temperature-specific spectral shift of luminescing thermally altered human remains
title_sort temperature-specific spectral shift of luminescing thermally altered human remains
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10247558/
https://www.ncbi.nlm.nih.gov/pubmed/37178277
http://dx.doi.org/10.1007/s00414-023-03006-0
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