ArticleEnvironmental science & technology2026
Is There an Optimal Wavelength for Germicidal Ultraviolet Air Disinfection?
Article in Environmental science & technology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
6 authors.
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Abstract
Germicidal UV (GUV) disinfection is effective against airborne pathogens, but it has been recently reported to increase indoor air pollution. Conventional GUV at 254 nm is applied in the upper room only due to skin/eye safety limits, while "Far UVC" (e.g., at 222 nm) is applied across the whole room due to less restrictive safety limits, enabling simpler installation and disinfection. GUV light sources at other wavelengths are being actively developed, creating an urgent need for guidance on their relative advantages. We investigate GUV between 185 and 310 nm by modeling in search of an optimal wavelength with both high disinfection and safety. For a specific fluence rate, GUV-induced air pollution health risks are at least ∼20 times larger below 242 nm than above it. This is mainly due to O
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