Estimation of the post-mortem interval in human bones by infrared spectroscopy.
Int J Legal Med
; 136(1): 309-317, 2022 Jan.
Article
en En
| MEDLINE
| ID: mdl-34613463
ABSTRACT
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).
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Antropología Forense
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Húmero
Límite:
Female
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Humans
Idioma:
En
Año:
2022
Tipo del documento:
Article