DC pole | Wartość | Język |
dc.contributor.author | Borusiewicz, Rafał | - |
dc.contributor.author | Martyna, Agnieszka | - |
dc.contributor.author | Zadora, Grzegorz | - |
dc.contributor.author | Zahrebelna, Anastasiia | - |
dc.date.accessioned | 2021-10-11T08:44:59Z | - |
dc.date.available | 2021-10-11T08:44:59Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | "Forensic Science International", Vol. 328, 2021, art. no. 111031, s. 1-9 | pl_PL |
dc.identifier.issn | 0379-0738 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/21746 | - |
dc.description.abstract | Oleoresin capsicum (OC) sprays, often referred to as 'pepper sprays', contain a solution of active compounds,
exerting an irritating effect on the human body. The active component of OC sprays are capsaicinoids,
obtained by extraction from peppers. The profiles (quantitative relations) of natural capsaicinoids depend
on the plant material, they were extracted from. Pepper spray is a non-lethal weapon that should only be
used for self-defense but is often used by criminals to attack and incapacitate victims. Evidence related to
these types of incidents, such as containers, clothes of victims or suspects, as well as traces of substances
found at the scene, are submitted to the forensic laboratory. The purpose of the analysis is to identify the
ingredients of the preparation (especially active components) and compare the traces found on objects from
the victim or the scene of the incident with the preparation from the can or traces found on objects related
to the suspect. The study aimed to investigate the possibility of differentiating OC gases based on capsaicinoid
profiles recorded in GC-MS analyses. Sixty-four gases from 12 different manufacturers were purchased
and tested.
The likelihood ratio (LR) approach was applied to the data expressing the relative capsaicinoids contents
computed by integrating GC-MS signals. Two hypotheses were assumed that stated either common or
different origins of the samples. Several LR models have been developed, and their performance has been
controlled by the number of false positives and false negatives as well as empirical cross entropy.
The research results showed that differentiation was very successful, with more than 90% of correct
responses. The results obtained show that OC sprays may be distinguished, even if they were produced by
the same producer presumably if produced using different batches of pepper extract. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | pepper sprays | pl_PL |
dc.subject | capsaicinoids | pl_PL |
dc.subject | gas chromatography–mass spectrometry | pl_PL |
dc.subject | comparison | pl_PL |
dc.subject | likelihood ratio | pl_PL |
dc.title | Differentiation of oleoresin capsicum sprays based on their capsaicinoid profiles | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.1016/j.forsciint.2021.111031 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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