Film dosimetry for occupant exposure monitoring within Far-UVC installations.
exposure monitoring
far‐UVC
film dosimetry
Journal
Photochemistry and photobiology
ISSN: 1751-1097
Titre abrégé: Photochem Photobiol
Pays: United States
ID NLM: 0376425
Informations de publication
Date de publication:
03 May 2024
03 May 2024
Historique:
revised:
17
04
2024
received:
03
01
2024
accepted:
24
04
2024
medline:
4
5
2024
pubmed:
4
5
2024
entrez:
4
5
2024
Statut:
aheadofprint
Résumé
Far-UVC radiation between 200 and 230 nm is a promising technology for reducing airborne disease transmission. Previous work with far-UVC lamps has demonstrated the efficacy of far-UVC radiation to inactivate bacteria and viruses while presenting minimal human health hazards. While far-UVC intentionally exposes the occupied space, effectively disinfecting air between occupants, installations must still ensure that occupant eye and skin exposure is within the recommended daily limits. This study examines far-UVC-sensitive films for measuring the dose received by occupants within two real-world far-UVC installations. The film is characterized for accuracy, angular response, wavelength response, and sources of uncertainty in film response, and used to obtain individual exposure doses that account for both the non-uniform irradiance and the unique motion of individuals within the space. Dosimetry results using the films, which account for the time-weighted average exposure of an occupant, ranged from 10% to 49% of the maximum calculated stationary dose based on peak irradiance measurements. Results from this study spotlight the need to incorporate time-weighted average considerations into the design and safety assessment of far-UVC installations to ultimately operate far-UVC technology with its full potential to prevent the spread of potentially fatal infectious diseases.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : NIOSH CDC HHS
ID : R01OH012312
Pays : United States
Informations de copyright
© 2024 The Authors. Photochemistry and Photobiology published by Wiley Periodicals LLC on behalf of American Society for Photobiology.
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