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Watson, P, Assi, S and Ralebitso-Senior, TK (2023) Evaluating Attenuated Total Reflectance Fourier Transform Infrared to Identify and Delineate Gravesoil Post-Exhumation of a Murine Carrion. In: Forensic Investigation Conference: From Death to Discovery, Wrexham, UK.
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Abstract
Understanding remains removal and relocation provides intelligence aiding in the accuracy of post-mortem interval estimation (PMI), formulating a timeline of events in subsequent death inquests. The quantitative longevity of the chemical cadaver decomposition island (CDI) regarding translocation of remains is particularly pertinent at historical and cold-case crime scenes. This study aimed to track shifts in subsurface soil physicochemistry in simulation burial microcosms where adult Mus musculus were utilised as human cadaver proxies. Soil samples were taken from the microcosms over 170 days post-exhumation of 8, 16, 24 and 32 days of initial burial (n=3). Physicochemical properties of the gravesoil were obtained non-destructively using attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. ATR-FTIR spectra highlighted temporal delineation of microcosms on the basis time-since-removal of remains. Changes in the both symmetrical and asymmetrical CH2 wagging present at -~2920 cm-1 and ~2850 cm-1 , indicative of aliphatic chain lipids, were prolonged significantly in post-exhumation soils when the carrion was removed after 3 and 4 weeks of burial.
| Item Type: | Conference or Workshop Item (Poster) |
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| Uncontrolled Keywords: | postmortem interval; clothing; Mus musculus; attenuated total reflectance-Fourier Transform infrared spectroscopy; clandestine grave location |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry Q Science > QH Natural history > QH301 Biology Q Science > QR Microbiology |
| Divisions: | Pharmacy & Biomolecular Sciences |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 09 Feb 2023 12:36 |
| Last Modified: | 09 Feb 2023 12:36 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/18845 |
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