Sweat will help detect trapped people

• April 25, 2024

The sweat It is a cooling medium for the human being, which is formed by Water , sodium chloride and waste substances. This will have a new utility, after some scientists developed some sensors to detect people trapped in collapsed structures, through the molecules produced by the perspiration , the breathing and the skin, according to a study published in the scientific journal Journal of Breath Research

The study, conducted jointly by researchers from the universities of Loughborough in England and Athens, Dortmund in Germany and Babes-Bolyai In Romania, it examined the air channels generated in demolished buildings to create a preliminary profile of molecules that could indicate the presence of victims .

The scientists recreated the conditions of a collapsed concrete building with crystals and experimented with eight participants, who served as victims during six-hour shifts and for a period of five days.

As a result, the sensors quickly revealed the presence of carbon dioxide Y ammonia in the air channels formed between the debris, and underlined their effectiveness as potential indicators. In addition, researchers found a large number of other volatile organic compounds as acetone and isoprene .

According to the results, when participants were asleep, there was a decrease in ammonia levels, something for which scientists have not found an explanation, and an increase in acetone levels when the absence of food grew.

The teacher Paul Thomas , of the University of Loughborough , highlighted that the development of detection devices for trapped people, based on metabolites (a molecule used during metabolic processes) breathing , sweat Y skin , has several advantages over the usual techniques, when used in the place of events without laboratory support, and look for vital signs for longer periods.

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