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자료유형
학술저널
저자정보
박용미 (부경대학교) 김라은 (부경대학교) 최원식 (부경대학교)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제35권 제5호
발행연도
2019.10
수록면
577 - 592 (16page)
DOI
10.5572/KOSAE.2019.35.5.577

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초록· 키워드

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To mitigate air pollution from vehicle emissions, the government recommends using public transportation. However, studies to assess public exposure to air pollutants (particularly, fine particles here) during the use of public transportation have been limited in Korea. We measured concentrations of particulate matter smaller than 2.5 μm in diameter (PM<SUB>2.5</SUB>) with DustTrak 8530 in three types of transportation environments (walk along roadsides, A/C on and off buses, and subways) in urban areas of Busan, Korea. A total of 13 round-trips were made for seven days in spring and summer of 2017. The mean PM<SUB>2.5</SUB> concentrations were the highest in the cabin of A/C non-operated buses (27.1 μg·m<SUP>-3</SUP>), followed by walking on the roadside (24.4 μg·m<SUP>-3</SUP>), subway platform (20.4 μg·m<SUP>-3</SUP>) and walking on campus of university (19.9 μg·m<SUP>-3</SUP>), inside subway trains (15.0 μg·m<SUP>-3</SUP>), and A/C operated buses (10.2 μg·m<SUP>-3</SUP>). Based on ventilation for healthy adults and the observed PM<SUB>2.5</SUB> concentrations, we also estimated inhalation rates of PM<SUB>2.5</SUB> in these transportation environments. Inhalation rates depend on both PM<SUB>2.5</SUB> levels and activities of transit-users (ventilation). With the ambient PM<SUB>2.5</SUB> concentration of 35 μg·m<SUP>-3</SUP>, the inhalation rates in the cabin of A/C operated buses, subway, and A/C non-operated buses were reduced to 46%, 68%, and 81%, compared to the inhalation rate in a walk along the roadside. These reductions even increase as ambient PM<SUB>2.5</SUB> level increases. This study provides the useful information to establish the guidelines for minimizing the transit-users’ exposure to PM<SUB>2.5</SUB>, although we need to collect more data under various weather and PM<SUB>2.5</SUB> conditions to confirm our conclusion because the exposure risks vary depending on the specific environments and seasons.

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Abstract
1. 서론
2. 연구 방법
3. 결과
4. 결론
References

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