Trial of a negative ion generator device in remediating problems related to indoor air quality
- University of Washington, Seattle (USA)
It has been suggested that supplementation of indoor air with negative ions can improve air quality. This study examined the effects of a negative ion-generator device on air contaminants and symptom reporting in two office buildings. Separate sets of functional and nonfunctional negative ion generators were monitored using a double blind, crossover design involving two 5-week exposure periods. There were no detectable direct or residual effects of negative ion generator use on air ion levels, airborn particulates, carbon dioxide levels, or symptom reporting. Symptom reporting declined at both sites initially and appeared to be consistent with placebo effect. Job dissatisfaction was an apparent contributor to symptom reporting, with a magnitude comparable to presumed effects of air quality. Further testing of such devices is needed before they should be considered for office air quality problems.
- OSTI ID:
- 5285489
- Journal Information:
- JOM, Journal of Occupational Medicine; (United States), Vol. 33:6; ISSN 0096-1736
- Country of Publication:
- United States
- Language:
- English
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CARBON DIOXIDE
AIR POLLUTION CONTROL
PARTICULATES
POLLUTION CONTROL EQUIPMENT
PERFORMANCE TESTING
AIR CONDITIONING
INDOOR AIR POLLUTION
OCCUPATIONAL EXPOSURE
OFFICE BUILDINGS
VENTILATION
WASHINGTON
AIR POLLUTION
BUILDINGS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CONTROL
DEVELOPED COUNTRIES
EQUIPMENT
FEDERAL REGION X
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION
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USA
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)