Estimation of the post-mortem interval in human bones by infrared spectroscopy

被引：0
作者：
Andreia Baptista
Mariana Pedrosa
Francisco Curate
Maria Teresa Ferreira
M. P. M. Marques
机构：
[1] University of Coimbra,Laboratory of Forensic Anthropology, Department of Life Sciences
[2] University of Coimbra,Research Centre for Anthropology and Health, Department of Life Sciences
[3] University of Coimbra,Centre for Functional Ecology, Laboratory of Forensic Anthropology, Department of Life Sciences
[4] University of Coimbra,Molecular Physical Chemistry” R&D Unit, Department of Chemistry
[5] University of Coimbra,Department of Life Sciences
来源：
International Journal of Legal Medicine | 2022年 / 136卷
关键词：
Human bones; Post-mortem interval; Infrared spectroscopy (FTIR-ATR); Forensic anthropology;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In forensic anthropology, there is an inherent difficulty in estimating the post-mortem interval (PMI). This study aimed to assess whether there is a correlation between changes in the bone mineral component and the PMI estimation. Samples of femur and humerus from 80 identified individuals with known post-mortem interval were analyzed. Infrared spectroscopy in attenuated total reflectance mode (FTIR-ATR) was applied for this analysis, several indices having been obtained from the infrared bands most representative of the bone’s relative contents in carbonate and phosphate. Specific relationships between sex/age and PMI were attained: for larger PMIs, there was an increase in the amount of B-type carbonate (BPI), A-type carbonates (API), and in the carbonate/phosphate (C/P) ratio, and a decrease of the crystallinity index (CI) and in the carbonate ratio (C/C). Two particular infrared indices (CI and C/C) were identified as the most suitable for post-mortem interval estimation, especially in females, controlling the effects of sex and age (in the statistical analysis).
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页码：309 / 317
页数：8
相关论文
共 223 条
[1]  
Bell LS(1996)The speed of post-mortem change to the human skeleton and its taphonomic significance Forensic Sci Int 82 129-140
[2]  
Skinner MF(2012)Será credível estimar o PMI em restos cadavéricos em avançado estado de decomposição? Cadernos do GEEvH 2 7-20
[3]  
Jones SJ(2010)Analytical separations of mammalian decomposition products for forensic science: a review Anal Chim Acta 682 9-22
[4]  
Ferreira MT(2011)Combined chemical and optical methods for monitoring the early decay stages of surrogate human models Forensic Sci Int 210 154-163
[5]  
Cunha E(2015)Human decomposition and the reliability of a ‘Universal’ model for post mortem interval estimations Forensic Sci Int 253 136.e1-136.e9
[6]  
Swann LM(2013)Reconsideration of bone Post-mortem interval estimation by UV-induced autofluorescence Forensic Sci Int 228 176.e1-176.e6
[7]  
Forbes S(2018)Applying standardized decomposition stages when estimating the PMI of buried remains: reality or fiction? Aust J Forensic Sci 50 68-81
[8]  
Lewis S(1978)Taphonomic and ecologic information from bone weathering Paleobiology 4 150-162
[9]  
Statheropoulos M(1998)Decay rates in a cold climate region: a review of cases involving advanced decomposition from the Medical Examiner’s Office in Edmonton, Alberta J Forensic Sci 43 57-61
[10]  
Agapiou A(2011)Time-since-death and bone weathering in a tropical environment Forensic Sci Int 204 126-133
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