Origin identification of homemade pepper spray by multivariate data analysis of chemical attribution signatures.
Chemical attribution signatures
Chemical forensics
Homemade pepper spray
Multivariate data analysis
Journal
Forensic science international
ISSN: 1872-6283
Titre abrégé: Forensic Sci Int
Pays: Ireland
ID NLM: 7902034
Informations de publication
Date de publication:
Nov 2019
Nov 2019
Historique:
received:
21
05
2019
revised:
03
09
2019
accepted:
05
09
2019
pubmed:
1
10
2019
medline:
1
10
2019
entrez:
1
10
2019
Statut:
ppublish
Résumé
Riot control agents such as pepper sprays can be misused for antagonistic and criminal purposes. Several web-pages and YouTube videos are available describing how to make homemade pepper spray. In this study, we investigated whether it was possible to identify the origin of homemade pepper sprays based on chemical attribution signatures from thirteen different types of chili acquired from six different vendors analyzed by GC-MS. The results showed that it was possible to differentiate chili based on species, chili type and vendor using OPLS-DA. Application of an external test set of chilies acquired and extracted one year later than development of the models resulted in correct classification in all models. The models displayed high predictability, suggesting their use for prediction of the identity and origin of seized homemade pepper sprays.
Identifiants
pubmed: 31568951
pii: S0379-0738(19)30368-8
doi: 10.1016/j.forsciint.2019.109956
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
109956Informations de copyright
Copyright © 2019 Elsevier B.V. All rights reserved.