|Document ID (ISN)||104947|
|ISSN - Serial title
||1545-9624 - Journal of Occupational and Environmental Hygiene
|Convention or series no.
||First M.W., Weker R.A., Yasui S., Nardell E.A.
||Monitoring human exposures to upper-room germicidal ultraviolet irradiation
||May 2005, Vol.2, No.5, p.285-292. Illus. 7 ref.
||The purpose of upper room ultraviolet germicidal irradiation is to interrupt the transmission of airborne infections by flooding the entire volume of premises above 2m with high-intensity ultraviolet radiation, while minimizing unintentional irradiance below this level to avoid eye and skin irritation. Air exchanges between the upper and lower room result in air disinfection of the occupied space. The objective of this study was to confirm that eye and skin exposures remain well below the recommended safe dose. Subjects wore a small photometer that recorded total ultraviolet dose during their normal routine. This value was compared with a hypothetical dose calculated from the highest measured eye-level irradiance. It was found that the observed doses were between one-third and one hundredth of the maximum eye-level irradiances.
||monitoring of ultraviolet radiation; biological hazards; disinfection of air; ultraviolet radiation
||exposure evaluation; photometry; permissible radiation doses
||D - Periodical articles
|Country / State or Province||Japan; USA|
|Broad subject area(s)