ISSN : 1738-4125(Print)
ISSN : 2287-7509(Online)
ISSN : 2287-7509(Online)
실내외ㆍ환경에서 이산화질소 측정 기간의 대표성
Validity of Nitrogen Dioxide Measurement Periods in Indoor and Outdoor Microenvironments
투고일：2011.08.24, 1차수정일：2011.11.28, 게재확정일：2011.12.06
Abstract
Personal or population exposure to hazardous air pollutants has often been assessed by time-weightedaverage model with combining concentrations of indoor environments and time-activity pattern, which weremainly a single measurement. However, daily levels of air pollutants in indoor environments may greatly bechanged because of source emission, ventilation, decay rate and so on. Subsequently exposure by a singlemeasurement in indoor environments could not be assessed properly. In this study, we measured theconsecutive 21 daily indoor and outdoor measurements of nitrogen dioxide (NO2) with 37 houses and 19shops such as restaurants and coffee shops beside street by using of passive samplers. Considering thataverage concentration during 21 days was true value, paired t-test was conducted. Daily variations of NO2in houses with constant or low emission source were different from those in restaurants with irregular orhigh emission source. These results can be explained that the NO2 emission of indoor sources could affectthe validity of measurement periods.
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