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CISDOC database

Document ID (ISN)109014
CIS number 09-187
ISSN - Serial title 1545-9624 - Journal of Occupational and Environmental Hygiene
Year 2007
Convention or series no.
Author(s) First M., Rudnick S.N., Banahan K.F., Vincent R.L., Brickner P.W.
Title Fundamental factors affecting upper-room ultraviolet germicidal irradiation - Part I. Experimental
Bibliographic information May 2007, Vol.4, No.5, p.321-331. Illus. 17 ref.
Abstract The objective of this research was to study the factors that relate to the effectiveness of upper-room ultraviolet germicidal irradiation for inactivating airborne microorganisms. The work was conducted in a laboratory chamber designed and furnished to simulate a hospital room. Nebulized Serratia marcescens, Bacillus subtilis spores and vaccinia virus were used as test aerosols. Data were collected from steady-state experiments comparing the number of viable organisms in the chamber air remaining with UV lamps turned on to the number with UV lamps turned off. UV power level had a strong influence but was fully effective only in the presence of strong air mixing. In conclusion, an ultraviolet installation is a complex system that requires careful integration of UV luminaries, UV power and room ventilation systems. See also CIS 09-000, ISN 6.
Descriptors (primary) ultraviolet radiation; hospitals; infection control; microorganisms
Descriptors (secondary) pathogenic bacteria; viruses; test laboratories; description of technique; disinfection of air; ventilation systems; evaluation of technique; reliability
Document type D - Periodical articles
Subject(s) Commerce, services, offices
Broad subject area(s) Biological hazards
Physical hazards
Browse category(ies) Health care services
Non-ionizing radiation