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A new study shows worrying levels of indoor air pollution from household products.
The frequency of use of household products has skyrocketed since the arrival of Covid-19, especially at the start of the health crisis. As studies were lacking on the risks of this type of product on indoor air quality, but also on workers frequently exposed to this type of product in their professional environment, researchers from Indiana University decided to carry out investigation.
Pollution comparable to a street near the road
Their results of the study published in the scientific journal “Science Advance”, conducted in 25m ventilated offices3 shows pollution comparable to a street polluted by the passage of cars. To reach this conclusion, the researchers analyzed the rate of polluting nanoparticles produced by household products containing monoterpenes, in particular limonene. A volatile organic compound (VOC) used in many household products which gives deodorant fragrances (citrus scent for limonene).
Damage to the respiratory tract
VOCs are known to be pollutants when they are diffused, but once this stage has passed, they can also be transformed into other substances harmful to health and mainly the respiratory tract (Ozone, hydroxyl, nitrate or chlorine, etc.).
The researchers therefore used these products for 14 minutes in a ventilated office, like a normal cleaning session. The team of scientists analyzed the level of nanoparticles released by the product and also when it is transformed into the air afterwards.
Study results report a 1.3 to 2.2 times increase in limonene levels (more than a furniture polish) in a 25m room3. This increase in the rate of pollution was followed by a drop in ozone and an increase in the rate of free radicals. And the problem is that once in the air, this pollution continued to transform and increase. until it reaches levels similar to an outdoor area polluted by road traffic.
Workers particularly at risk
The researchers therefore warn against the exposure of workers who use its cleaning products very often, as well as those who are exposed to them in offices. More studies must continue now in order to quantify exactly the rate inhaled by humans and the health risks.