Dogs can sniff out one billion teaspoon of gasoline
Dogs have a 1 million times sharper sense of smell than humans, and police dogs and drug detection dogs use the sense of smell sharpened by training to contribute to society. According to a research team
A novel protocol for producing low-abundance targets to characterize the sensitivity limits of ignitable liquid detection canines-ScienceDirect
https://www.sciencedirect.com/science/article/abs/pii/S2468170920300187
Dogs can detect traces of gasoline down to one billionth of a teaspoon | Faculty of Science
https://www.ualberta.ca/science/news/2020/may/dogs-smell-gasoline.html
The Royal Canadian Mounted Police (RCMP) may use dogs in arson investigations to find traces of flammable liquids such as gasoline. However, the research team pointed out that it has not been revealed to what extent the dog can smell the gasoline.
Therefore, the research team prepared two dogs who were actually used in the investigation of the fire scene and trained them to detect the smell of gasoline or other flammable liquids. In addition, we made gasoline and flammable liquids soak into ceramic pieces and wood pieces, and investigated whether dogs could be detected with varying amounts.
The following is 'Eza', which was usually used as an RCMP arson investigative dog and also participated in an experiment at the University of Alberta as a test dog.
According to the research team, dogs trained with odors of non-gasoline flammable liquids were able to sniff out different breeds, while dogs trained with the smell of gasoline odors of non-gasoline flammable liquids. I found that I had a weak sense of smell.
It was also found that dogs trained on the smell of gasoline were able to detect one billionth of a tsp, or five picoliters (one picoliter is one trillionth of a liter) of gasoline. In other words, trained dogs can find evidence at the scene of a arson even if it cannot be detected without laboratory equipment.
In addition, the dog was able to find evidence without problems even in the smell of the building burned by the fire.
'I was shocked again by the sharpness of the dog's olfactory sense,' said Robin Abel, chemistry professor at the University of Alberta, the first author of the paper. 'The dog can't testify in court, but the dog showed. It is possible to take evidence debris home from the location and analyze it. Knowing the level of detection of dogs in arson is a great guide for forensic laboratories processing various evidences. ' It was
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