Effectiveness of Germicidal UV Radiation for Reducing Fungal Contamination within Air-Handling Units

ABSTRACT Levels of fungi growing on insulation within air-handling units (AHUs) in an office building and levels of airborne fungi within AHUs were measured before the use of germicidal UV light and again after 4 months of operation. The fungal levels following UV operation were significantly lower than the levels in control AHUs.

[1]  M. Tapper,et al.  The Use of Germicidal Lamps to Control Tuberculosis in Healthcare Facilities , 1993, Infection Control & Hospital Epidemiology.

[2]  H. Burge.  Bioaerosols: prevalence and health effects in the indoor environment. , 1990, The Journal of allergy and clinical immunology.

[3]  R. W. Tuveson,et al.  Effects of UV and Phototoxins on Selected Fungal Pathogens of Citrus , 1992, International Journal of Plant Sciences.

[4]  E. Nardell,et al.  Environmental control of tuberculosis. , 1993, The Medical clinics of North America.

[5]  D. Pierson,et al.  Fungal Colonization of Air Filters and Insulation in a Multi-Story Office Building: Production of Volatile Organics , 1997, Current Microbiology.

[6]  R. Scheir,et al.  Using UVC technology to enhance IAQ , 1996 .

[7]  R. Simmons,et al.  Effect of relative humidity on fungal colonization of fiberglass insulation , 1994, Applied and environmental microbiology.

[8]  B. Jarvis,et al.  Airborne outbreak of trichothecene toxicosis , 1986 .

[9]  J. Henson,et al.  THE DARK SIDE OF THE MYCELIUM: Melanins of Phytopathogenic Fungi. , 1999, Annual review of phytopathology.

[10]  Peter A. Ensminger,et al.  Control of development in plants and fungi by far-UV radiation , 1993 .

[11]  R. W. Tuveson,et al.  The isolation of ultraviolet sensitive mutants from Aspergillus rugulosus. , 1967, Radiation research.

[12]  R. Atlas,et al.  Microbial Ecology: Fundamentals and Applications. , 1982 .

[13]  H. Burger.  Bioaerosols: prevalence and health effects in the indoor environment. , 1990 .

[14]  L. E. Alevantis,et al.  Effect of Ultraviolet Germicidal Lamps on Airborne Microorganisms in an Outpatient Waiting Room , 1992 .

[15]  M. Kundi,et al.  Increased inactivation of Saccharomyces cerevisiae by protraction of UV irradiation , 1996, Applied and environmental microbiology.

[16]  A. Casadevall,et al.  Decreased susceptibility of melanized Cryptococcus neoformans to UV light , 1994, Applied and environmental microbiology.

[17]  F. Barrett,et al.  An outbreak of aspergillosis in children with acute leukemia. , 1979, The Journal of pediatrics.

[18]  J. Lacey.  Aerobiology and health: the role of airborne fungal spores in respiratory disease , 1991 .

[19]  J. Bourbeau,et al.  Germicidal ultraviolet irradiation in air conditioning systems: effect on office worker health and wellbeing: a pilot study. , 1999, Occupational and environmental medicine.

[20]  The microbiology of the atmosphere , 1973 .

[21]  Janet M. Macher,et al.  Evaluation of a Methodology for Quantifying the Effect of Room Air Ultraviolet Germicidal Irradiation on Airborne Bacteria , 2000 .