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The Characteristics of Black Carbon of Seoul

  • Journal of Environmental Impact Assessment
  • Abbr : J EIA
  • 2019, 28(2), pp.113-128
  • Publisher : Korean Society Of Environmental Impact Assessment
  • Research Area : Engineering > Environmental Engineering
  • Published : April 30, 2019

박종성 1 Jeongho Kim ORD ID 2 Inho Song 1 Hyunwoong Kim 1 Hyung Bae Lim 3 박승명 1 Sun-A Shin 1 신혜정 1 이상보 1

1국립환경과학원
2에이피엠엔지니어링
3국립환경과학원 대기환경연구과

Accredited

ABSTRACT

The concentration and coating thickness of black carbon (BC) were measured along with fine dust in the fall of 2018, at the Seoul Metropolitan Area Intensive Monitoring Station (SIMS). In fall, the concentration of PM10 and PM2.5 was 23 ± 12.6 μg/m3 and 12 ± 5.8 μg/m3, respectively, lower than that in other seasons. The BC level, measured using an Aethalometer, was 0.73 ± 0.43 μg/m3, while the levels of elemental carbon (EC) and refractory-BC (rBC), measured by semi-continuouscarbon analyzer (SOCEC) and single particle soot photometer (SP2), were 0.34 ± 0.18 μg/m3 and 0.32 ± 0.18 μg/m3, respectively. As such,the concentration level differed according to the measurement method, but its time-series distribution and diurnal variation showed the same trends. The BC concentration at SIMS was primarily affected by automobiles with higherlevels of BC during morning and evening commuting times due to increased traffic congestion. rBC, measured by SP2, had a peak concentration and coating thickness of 84 nm and 43 nm,respectively. Notably,the coating thickness had an inverse relationship with particle size.

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