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논문 기본 정보

자료유형
학술저널
저자정보
최원식 (부경대학교)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제37권 제2호
발행연도
2021.4
수록면
276 - 291 (16page)

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초록· 키워드

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The particle number concentrations (PNC) and mean sizes of ultrafine particles (UFP) were measured indoors and outdoor simultaneously in a single-family house located near major roadways with heavy traffic. The mean PNC were 1.6(±10.0)×10⁴, 2.1(±4.1)×10⁴, and 0.9(±0.8)×10⁴ particles·cm<SUP>-3</SUP> in ambient air, a living room adjacent to the kitchen on the 1<SUP>st</SUP> floor (LR1), and a bedroom on the 2<SUP>nd</SUP> floor (BR2), respectively. The median indoor to outdoor concentration ratios (I/O ratio) were 0.87 (LR1) and 0.68 (BR2) for the entire period, 0.69 (LR1) and 0.53 (BR2) under the conditions with all windows closed and no cooking activities, and 0.69 (LR1) and 0.81 (BR2) with windows opened on both the 1<SUP>st</SUP> and 2<SUP>nd</SUP> floor. The indoor PNC levels were generally influenced by ambient PNC. However, indoor emissions (i.e., cooking activities) and infiltration of outdoor PNC spikes led to high PNC spikes indoors (up to 42.3×10⁴ particles·cm<SUP>-3</SUP> instantly) with time-lags depending on the locations. The residence times of these indoor spikes varied significantly due to different ventilation conditions. The median mean-size of UFP was 8.8% and 21.0% larger in LR1 and BR2, respectively, compared to that in ambient air. The mean total deposition fractions in the human respiratory tract calculated with ICRP (International Commission on Radiological Protection) model were 50.4% (ambient), 47.7% (LR1), and 44.4% (BR2). Of the aerosols deposited in the respiratory tract, 73.0% (ambient), 73.8% (LR1), and 74.5% (BR2) were deposited in the alveolar region, the deepest region of the respiratory tract. These findings suggest that extended efforts to monitor indoor and outdoor PNC and size distributions in the regions with a dense roadway network are needed.

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Abstract
1. 서론
2. 방법
3. 결과 및 고찰
4. 결론
References

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UCI(KEPA) : I410-ECN-0101-2021-539-001649632