ISSN : 1738-4125(Print)
ISSN : 2287-7509(Online)
ISSN : 2287-7509(Online)
주택 실내공기 오염물질에 대한 실외공기 및 실내발생의 기여율
Contributions of Outdoor Air and Indoor Sources on Residential Indoor Air Quality
Abstract
Indoor air quality can be affected by indoor sources, ventilation, decay and outdoor levels. Althoughtechnologies exist to measure these factors, direct measurements are often difficult. Toluene and nitrogendioxide (NO2) concentrations of residential indoor and outdoor were simultaneously measured and comparedin 16 houses, using passive samplers during every 3 days for 60 days. Concentrations of toluene and NO2were analyzed by gas chromatography and spectrophotometer, respectively. Using a mass balance model,penetration factor (ventilation rate divided by sum of ventilation rate and deposition constant) and sourcegeneration factor (source generation rate divided by sum of ventilation rate and deposition constant) werecalculated by multiple indoor and outdoor measurements. The mean contributions of toluene of indoor andoutdoor sources on residential indoor air quality were estimated to be 31.01% and 67.00%, respectively. Onthe other hand, mean contributions of NO2 were 58.93% and 41.06%, respectively. These results could beexplained that contributions of indoor and outdoor air pollutants sources are different to residential indoorair concentrations. In conclusion, contributions of outdoor air and indoor sources affecting indoor air qualitywere effectively characterized using multiple indoor and outdoor measurements.
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