Wednesday, July 15, 2015

Certain air filters using photocatalytic oxidation have dangerous by-product, study shows

Imagine if, in an effort to clean the air more efficiently, you were involuntarily introducing chemicals more dangerous than the ones you were trying to scrub. Researchers have found that this exact situation is happening with a type of air filter called photocatalytic oxidation, a product already on the market. The chemical by-product? Formaldehyde, a known human carcinogen.

from Geochemistry News -- ScienceDaily http://ift.tt/1JioTuq
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