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RISS 인기검색어
- 검색키워드
- 저자 : 임성국(Sung-Kuk Yim) (검색결과 3 건)
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임성국(Sung-Kuk Yim),김문현(Moon-Hyeon Kim),손부순(Bu-Soon Son),양원호(Won-Ho Yang) 한국실내환경학회 2007 한국실내환경학회지 Vol.4 No.1
Burning mosquito coils in indoor environments maygenerate smoke that can control mosquito effectively. This practice has been used in numerous households in Korea. However the smoke may contain air pollutants of health concern. We conducted the present study to characterize the emission from two common brands of mosquito coils from Vietnam and Malaysia, respectively. We measured mass emission of air pollutants of nitrogen oxides (NOx), fine particulate(PM₂.?), formaldehyde (HCHO), total volatile organic compounds (TVOCs), carbon monoxide (CO) and carbon dioxide (CO₂) in completely closed chamber. Air pollutants concentrations resulting from burning mosquito coils could substantially exceed health-based air quality standards orguidelines. Under the same condition, air pollutants were measured by cigarette smoking to compare mosquito coil. Burning one mosquito coil would release the same amount of PM₂.? mass as burning 20~58 cigarettes. The emission of HCHO from burning one coil can be as high as that released from burning 27 cigarettes.
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양원호,손부순,임성국,Yang, Won-Ho,Son, Bu-Soon,Yim, Sung-Kuk 한국환경보건학회 2007 한국환경보건학회지 Vol.33 No.4
Indoor air quality is the dominant contributor to total personal exposure because most people spend a majority of their time indoors. The purposes of this study were to evaluate the alternative method for improvement of indoor air quality in house after coating titanium dioxide ($TiO_2$) photocatalyst for interior part of the house using nitrogen dioxide ($NO_2$) multiple measurements. To evaluate the alternative method in indoor environment, daily indoor and outdoor $NO_2$ concentrations of an apartment and a detached house were daily measured for consecutive 21 days in winter and summer, respectively, Another daily 21 measurements were carried out after $TiO_2$ coating on wall paper of interior part in houses. All $NO_2$ concentrations were measured by passive filter badges. Indoor air quality models using mass balance are useful tool to quantify the relationship between indoor air pollution levels, ambient concentrations, and explanatory variables. Using a mass balance model and linear regression analysis, penetration factor (ventilation rate divided by sum of ventilation rate and decay rate) and source strength factor (emission rate divided by sum of ventilation rate and decay rate) were calculated. Subsequently, the decay constants were estimated. In this study. magnitude of improvement of indoor air quality could be evaluated by decay constant.
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주택 실내환경 자재와 이산화질소 반응에 의한 감소상수 평가
양원호(Won-Ho Yang),임성국(Sung-Kuk Yim),김문현(Moon-Hyeon Kim),손부순(Bu-Soon Son) 한국실내환경학회 2008 한국실내환경학회지 Vol.5 No.1
Indoor air quality can be affected by indoor sources, ventilation, outdoor levels, and removal. Various indoor and outdoor combustion sources make nitrogen dioxide(NO₂), which is a by-product of high temperature fossil fuel combustion. Especially, the presence of gas ranges and smoking have been identified as two of the major factors contributing to indoor NO₂ exposures. In this study, the relative efficiencies for NO₂ removal by a large number of materials are presented. This work has demonstrated that reactions with indoor surfaces represents a significant sink for NO₂, and that these reactions currently are effecting a considerable degree of control over indoor NO₂ levels. It seems that this control could be enhanced by judicious selection of furnishings and construction materials. Improved understanding of that rates and mechanisms of the removal process will permit optimization of the process for indoor air quality improvement.
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