• Title/Summary/Keyword: 입자(particulate)

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Temporal Variation of Particulate Matters and PAHs in Seoul (서울지역에서 대기 중 분진 및 입자상 PAHs 농도의 시간적 분포 특성)

  • 송은주;이유진;최지예;이지이;김용표
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.11a
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    • pp.341-342
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    • 2003

  • 대기 중의 부유분진 (suspended particulate matters)은 대기오염을 측정하는 일반지표 중의 한 항목으로, 보통 대기의 단위부피당 질량으로 그 오염정도를 판단하고 있다. 대기 중 부유분진은 입경별 농도분포에 따라 통해 오염원의 특성을 파악할 수 있고, 여러 오염원에서 배출되어지는 여러 화학물질들로 구성되어 있기 때문에 인체 위해성 측면에서 많은 관심의 대상이 되어 왔다. 또한 다환방향족탄화수소 (Polycyclic Aromatic Hydrocarbons, PAHs)는 환경에 존재하는 중요한 발암물질이자 돌연변이 유도체이다.(중략)

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Chemical Composition Characteristics of Fine Particulate Matter at Atmospheric Boundary Layer of Background Area in Fall, 2012 (배경지역 대기경계층 미세먼지의 화학조성 특성: 2012년 가을 측정)

  • Ko, Hee-Jung;Lee, Yoon-Sang;Kim, Won-Hyung;Song, Jung-Min;Kang, Chang-Hee
    • Journal of the Korean Chemical Society
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    • v.58 no.3
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    • pp.267-276
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    • 2014

  • The collection of $PM_{10}$ and $PM_{2.5}$ fine particulate matter samples was made at the 1100 m site of Mt. Halla of Jeju Island, located at the atmospheric boundary layer (ABL) of background area, during the fall of 2012. Their ionic and elemental species were analyzed, in order to investigate the chemical compositions and size distribution characteristics. In $PM_{2.5}$ fine particles ($d_p$ < $2.5{\mu}m$), the concentrations of the secondary formed nss-$SO{_4}^{2-}$, $NH_4{^+}$ and $NO_3{^-}$ species were 4.84, 1.98, and $1.27{\mu}g/m^3$, respectively, showing 58.2% of the total $PM_{2.5}$ mass. On the other hand, their concentrations in $PM_{10-2.5}$ coarse particles (2.5 < $d_p$ < $10{\mu}m$) were 0.63, 0.21 and $1.10{\mu}g/m^3$, respectively, occupying 22.8% of the total $PM_{10-2.5}$ mass. The comparative study of size distribution has resulted that $NH_4{^+}$, nss-$SO{_4}^{2-}$, $K^+$ and $CH_3COO^-$ are mostly existed in fine particles, and $NO_3{^-}$ is distributed in both fine and coarse particles, but $Na^+$, $Cl^-$, $Mg^{2+}$ and nss-$Ca^{2+}$ are rich in coarse particle mode.

  • https://doi.org/10.5012/jkcs.2014.58.3.267 인용 PDF KSCI KPUBS HTML