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Humans are basically like large ozone processors
Published:
2022-10-27
Every day, dead skin cells shed by the body accumulate all over the home. However, new research shows that this dirty-sounding stuff can actually help clean indoor air.
Every day, dead skin cells shed by the body accumulate all over the home. However, new research shows that this dirty-sounding stuff can actually help clean indoor air.
Danish scientists have said that the oil contained in dead skin cells can eliminate ozone, the US media reported on 16 May. In fact, the oily substance, called squalene, can reduce indoor ozone levels by about 2-15 percent. According to the report, the molecule contains six double-bonded carbon atoms, which react with ozone and break it down.
The ozone contained in the upper atmosphere is known to protect the earth from radiation, however, the ozone near the earth's surface is harmful. This is mainly caused by the interaction of car exhausts, industrial emissions and other harmful gases. Inhalation of such ozone can impair lung function and cause inflammation of the lining of the lungs. This may permanently damage the lung tissue in the long term.
This is where the approximately 500 million dead skin cells that the body sheds every day come in handy.
In a project to study the effects of indoor environments on children's health, chemist Charles Wiexler and colleagues collected dust from corners other than the floor in 500 bedrooms and 151 day-care centres in Denmark and analysed it for two components of skin oils: squalene and cholesterol. The results showed that the cholesterol contained in the skin also eliminated ozone, but to a slightly lesser extent than the squalene.
Other chemicals, such as oleic acid, which is found in some cooking oils, also contain double-bonded atoms, while the surface layer of some objects, such as some rubber products, can also absorb ozone, according to Wiexler.
Previous studies in simulated cabin environments have shown that more than half of the ozone reacts and disappears when it comes into contact with exposed skin, hair and clothing. And another study simulating an office environment found that a person could eliminate 10-25% of ozone in a 30 cubic metre space.
The findings over the last five years have shown that humans are basically like large ozone processors," says Vieuxler. In an occupied room, people absorb more ozone than dust, except that dust can continue to react with ozone in an unoccupied room as well."
Yet Vechuyler further points out that this doesn't mean you should stop cleaning your room. "The skin debris shed by one person may cause an allergic reaction in another person, and may also spread harmful microorganisms." He therefore believes that "although dust absorbs ozone, we should continue dusting." Article reprinted from the internet, infringement removed.
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