Resistance of human odours to extremely high temperature as revealed by trained dogs

Santariová, Milena; Pinc, Ludvík; Bartoš, Luděk; Vyplelova, Petra; Gerneš, J.; Sekyrová, V.

doi:10.17221/8848-cjas

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…This makes the compound easily volatile, more sensitive to the environmental condition and accessible to diminished in a minute or hours (59). In other forms, the low volatile compound is crucial in forensic context as it persists for a more extended period in the surrounding, with steady decay of the compound and low reaction with other compounds (60)(61)(62). This is supported by a previous study, which showed a lower volatile compound recovered a higher amount from the ageing sample than a high and moderate volatile compound.…”

Section: Blood Odourmentioning

confidence: 99%

“…Several studies have been conducted to determine the level stability of trace odour. Santariová, M. et al (61) experimented on the resistance of the human body odour at different temperature levels using a canine as a detector. The result is enthralling as the canine correctly identified a trace odour even though it had been exposed to high temperatures up until 900 °C.…”

Section: Blood Odourmentioning

confidence: 99%

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Chemical Profiling of Trace Odours for Forensic Identification: A Review

Kamal¹,

Omar²,

Chang³

et al. 2023

MJMHS

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Trace odour is one of the trace material evidence that has significant value in forensic analysis. The recovery of relevant trace odour components from clothing has the potential to be a form of trace evidence that can be used to assess the likelihood of a contact between individuals in sexual and violent cases. They have the same potential as other trace evidence and can narrow down the suspect in the investigation. Studies conducted previously related to trace odour have succeeded in proving that this trace odour is unique, has its signature profile and can distinguish it from other sources such as fingerprints and DNA. This review highlights these trace odours and their persistence after being transferred, which contribute to a complete picture of the dynamics and potential application in the forensic reconstruction process. The literature was sourced from electronic databases such as Scopus, PubMed, Springer Link, Wiley On¬line Library and Science Direct. Keywords such “odour”, “trace odour”, “scent”, “volatile organic compound”, “forensic identification” were utilised. Further studies on various forms of trace odour are needed to strengthen their evidential values and be admissible to the court.

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Section: Blood Odourmentioning

confidence: 99%

Section: Blood Odourmentioning

confidence: 99%

Chemical Profiling of Trace Odours for Forensic Identification: A Review

Kamal¹,

Omar²,

Chang³

et al. 2023

MJMHS

View full text Add to dashboard Cite

show abstract

Multiplicity of human scent signature

Doležal

Furton

Lněničková

et al. 2019

Egypt J Forensic Sci

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Background: In this paper, the term "human scent signature" refers to a group of chemical compounds in a human scent trace that are in certain relative concentrations that make an unambiguous identification of persons possible. At the present time, the scent identification of persons is performed using specially trained canines. However, the scent identification mechanism as well as the molecular composition of the human scent signature is entirely unrecognized. Delimitations of the group of chemical compounds according to their volatilities that specially trained canines use for the scent identification of persons were initially the main aim of this study. Methods: Eleven volunteer scent samples were split into three groups of chemical compounds, i.e., into three disjointed scent fractions with different volatilities of the compounds via preparative gas chromatography. The human scent signatures were searched in these separated scent fractions using six specially trained canines (female German Shepherds). Results: The canines were able to identify individual persons successfully using different scent fractions. From this fact, it follows that one scent trace can contain more than only one group of scent compounds that can be used for scent identification by the trained canines. This observed phenomenon was named as "the multiplicity of the human scent signature" in this study. The scent identification line-up procedure provided the following results: The poorly volatile fraction resulted in an 85% success rate in the scent identification procedure. The middle fraction resulted in a 58% success rate, and the highly volatile fraction resulted in a 30% success rate. Conclusions: In this study, it was found that the human scent sample contains more than one group of scent compounds; according to which the trained canines are able to identify human individuals. It means that the human scent sample contains more than only one scent signature. The authors of this research believe that results of this study will open a broad discussion about the multiplicity of the human scent signature, primary scent molecules, optimal canine training, and in general, the scent identification method in many countries.

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Resistance of human odours to extremely high temperature as revealed by trained dogs

Cited by 2 publications

References 22 publications

Chemical Profiling of Trace Odours for Forensic Identification: A Review

Chemical Profiling of Trace Odours for Forensic Identification: A Review

Multiplicity of human scent signature

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