Decomposing Human Blood: Canine Detection Odor Signature and Volatile Organic Compounds.
canine detection
decompositional process
forensic sciences
human blood
human scent
volatile organic compounds
Journal
Journal of forensic sciences
ISSN: 1556-4029
Titre abrégé: J Forensic Sci
Pays: United States
ID NLM: 0375370
Informations de publication
Date de publication:
Mar 2019
Mar 2019
Historique:
received:
07
06
2018
revised:
16
07
2018
revised:
03
08
2018
accepted:
06
08
2018
pubmed:
4
9
2018
medline:
21
3
2019
entrez:
4
9
2018
Statut:
ppublish
Résumé
The admissibility of human "odor mortis" discrimination in courts depends on the lack of comprehension of volatile organic compounds (VOCs) during the human decay process and of the lack in standardized procedures in training cadaver dogs. Blood was collected from four young people who died from traffic accidents and analyzed using HS-SPME/GC-MS at different decompositional stages. Two dogs, professionally trained, were tested to exactly locate blood samples, for each time point of the experiment. We found a long list of VOCs which varied from fresh to decomposed blood samples, showing differences in specific compounds. Dog performance showed a positive predictive value between 98.96% and 100% for DOG A, and between 99.47% and 100% for DOG B. Our findings demonstrated that decomposing human blood is a good source of VOCs and a good target for canine training.
Identifiants
pubmed: 30176172
doi: 10.1111/1556-4029.13901
doi:
Substances chimiques
Volatile Organic Compounds
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
587-592Informations de copyright
© 2018 American Academy of Forensic Sciences.