Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
권호 표지

Estimation of Source Strength and Deposition Constant of Nitrogen Dioxide Using Compartment Model

구획모델을 이용한 주택에서 이산화질소의 발생강도 및 감소상수 동시 추정

  • Yang Won-Ho (Department of Occupational Health, Catholic University) ;
  • Son Bu-Soon (Department of Environmental Health Science, Sonchunhyng University) ;
  • Sohn Jong-Ryeul (College of Health Science, Korea University)
  • 양원호 (대구가톨릭대학교 산업보건학과) ;
  • 손부순 (순천향대학교 환경보건학과) ;
  • 손종렬 (고려대학교 보건대학)
  • Published : 2005.08.01
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Abstract

Indoor air quality might be affected by source strength of indoor pollutants, ventilation rate, decay rate, outdoor level, and so on. Although technologies measuring these factors exist directly, direct measurements of all factors are not always practical in most field studies. The purpose of this study was to develop an alternative method to estimate the source strength and deposition constant by application of multiple measurements. For the total duration of 60 days, indoor and outdoor $NO_2$ concentrations every 3 days were measured in 30 houses in Seoul, Asan and Daegu. Using a compartment model by mass balance and linear regression analysis, penetration factor (ventilation divided by sum of air exchange rate and deposition constant) and source strength factor (emission rate divided by sum of air exchange rate and deposition constant) were calculated. Subsequently, the source strength and deposition constant were estimated. Natural ventilation was $1.80{\pm}0.42\;ACH,\;1.11{\pm}0.50\;ACH,\;0.92{\pm}0.26\;ACH$ in Seoul, Asan and Daegu, respectively. Calculated deposition constant(K) and source strength of $NO_2,$ in this study were $0.98{\pm}0.28\;hr^{1}\;and\;16.28{\pm}7.47\;ppb/h,$ respectively.

Keywords

References

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