공단지역과 시골지역 주택의 주택 실내, 실외 및 개인의 이산화질소 노출평가
Indoor, Outdoor, and Personal Exposure to Nitrogen Dioxide Comparing Industrial Complex Area with Country Area
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Indoor air quality can be affected by indoor sources, ventilation, decay, and outdoor levels. 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 has been identified as one of the major factors contributing to indoor NO₂ exposures. In this study, we assessed the personal exposure to NO₂ with measurements of indoor and outdoor NO₂ levels in residence, house characteristics, and questionnaire, comparing the industrial complex area with country area. Personal exposure concentrations were significantly correlated with indoor NO₂ concentrations of residence in both industrial complex area and country area with correlation coefficients of 0.561 and 0.664, respectively, comparing to outdoors. According to multiple regression analysis, indoor NO₂ levels in residence could be only affected by outdoor levels (p=0.000) in spite of higher indoor source such as smoking indoors . Therefore, it is suggested that outdoor air quality as well as indoor air quality should be considered to reduce the personal exposure to air pollutants.
Abstract
Indoor air quality can be affected by indoor sources, ventilation, decay, and outdoor levels. 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 has been identified as one of the major factors contributing to indoor NO₂ exposures. In this study, we assessed the personal exposure to NO₂ with measurements of indoor and outdoor NO₂ levels in residence, house characteristics, and questionnaire, comparing the industrial complex area with country area. Personal exposure concentrations were significantly correlated with indoor NO₂ concentrations of residence in both industrial complex area and country area with correlation coefficients of 0.561 and 0.664, respectively, comparing to outdoors. According to multiple regression analysis, indoor NO₂ levels in residence could be only affected by outdoor levels (p=0.000) in spite of higher indoor source such as smoking indoors . Therefore, it is suggested that outdoor air quality as well as indoor air quality should be considered to reduce the personal exposure to air pollutants.
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