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

被引：19

作者：

Baptista, Andreia ^{[1
]}

Pedrosa, Mariana ^{[1
]}

Curate, Francisco ^{[2
,3
]}

Ferreira, Maria Teresa ^{[2
,3
,4
]}

Marques, M. P. M. ^{[4
,5
]}

机构：

[1] Univ Coimbra, Dept Life Sci, Lab Forens Anthropol, P-3000456 Coimbra, Portugal

[2] Univ Coimbra, Dept Life Sci, Res Ctr Anthropol & Hlth, P-3000456 Coimbra, Portugal

[3] Univ Coimbra, Ctr Funct Ecol, Dept Life Sci, Lab Forens Anthropol, P-3000456 Coimbra, Portugal

[4] Univ Coimbra, Dept Chem, Mol Phys Chem R&D Unit, P-3004535 Coimbra, Portugal

[5] Univ Coimbra, Dept Life Sci, P-3004456 Coimbra, Portugal

来源：

INTERNATIONAL JOURNAL OF LEGAL MEDICINE | 2022年 / 136卷 / 01期

关键词：

Human bones; Post-mortem interval; Infrared spectroscopy (FTIR-ATR); Forensic anthropology; STRUCTURAL-CHANGES; MINERAL COMPONENT; FOSSIL BONE; DECAY-RATES; DIAGENESIS; REMAINS; CRYSTALLINITY; DECOMPOSITION; SITES; FTIR;

D O I：

10.1007/s00414-021-02641-9

中图分类号：

DF [法律]; D9 [法律]; R [医药、卫生];

学科分类号：

0301 ; 10 ;

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).

引用

页码：309 / 317

页数：9