• Title/Summary/Keyword: 다환방향족

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Measurement of Dry Deposition of Polycyclic Aromatic Hydrocarbons in Jeoniu (전주지역에서 다환방향족 탄화수소의 건식 침적 측정)

  • Kim, Hyoung-Seop;Kim, Jong-Guk;Ghim, Young-Sung
    • Journal of Korean Society for Atmospheric Environment
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    • v.23 no.2
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    • pp.242-249
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    • 2007
  • Deposition fluxes of polycyclic aromatic hydrocarbons (PAHs) were measured at the Chonbuk National University located in Jeonju between June and November 2002. Fluxes of gaseous and particulate PAHs were separately obtained using a water surface sampler (WSS) and a dry deposition plate (DDP). Most of PAHs were deposited in the gaseous form since the low molecular weight PAHs dominates in the atmosphere. The deposition velocity of particulate PAHs was higher than that of gaseous PAHs when the molecular weight was low, but substantially decreased as the fine particle fraction increased with molecular weight. The deposition velocity was generally higher at high wind speeds. However, increase in the deposition velocity in unstable atmospheric conditions was also observed for gaseous PAHs of intermediate molecular weight.

Application of chemical Mass Balance Model for the Source Apportionment of Polynuclear Aromatic Hydrocarbons in Urban Atmosphere (도시 대기오염물중 다환방향족 탄화수소의 배출원 규명을 위한 화학물질 수지모델의 적용)

  • 구자공;서영화
    • Journal of Korean Society for Atmospheric Environment
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    • v.8 no.4
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    • pp.229-239
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    • 1992
  • A receptor model application was performed by using a chemical mass balance (CMB) model to identify and apportion the specific source of airborne organic pollutants, particularly polynuclear aromatic hydrocarbons (PAHs). Source profiles of PAHs produced from the combustion of fossil fuels for CMB modeling were prepared by measuring them in emission gases. The emission sources which were examineed for the development of PAH source profiles are a coal-fired furnace using Yontan, a bunker-C iol heating boiler, and gasoline-and diesel engine automobiles. The ambient concentrations of PAHs were determined at four sites in Daejon city in 1991 with a seasonal variation. Wintertime air samples contained more extractable organic matter than summertime samples. The results of CMB modeling were various depending on the sampling sites and seasons, but the emission from bunker-C oil heating boliers was the predominant factor to affect local air quality throughout the year.

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A Study on Polynucler Aromatic Hydrocarbons in Atmospheric Particulate Matters -Based on the data aquired in Heukseok-Dong, Seoul- (부유분진중 다환방향족 탄화수소에 관한 연구 - 서울 흑석동 지역을 중심으로)

  • 손동헌;이규식;허문영
    • YAKHAK HOEJI
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    • v.30 no.6
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    • pp.323-328
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    • 1986
  • This paper describes on the distribution of polynuclear aromatic hydrocarbons (PAHs) in various size of atmospheric particulate matter (A.P.M.). A.P.M. in Seoul city were collected on guartz fiber filter according to particle size using an Andersen high volume air sampler from Feb. 1983 to March 1984. And 7 PAHs [benzo(a)pyrene, benzo(k)fluoranthene, benzo(ghi)perylene, benzo(e) pyrene, perylene, chrysene, and pyrene] were analyzed by high performance liquid chromatography. The concentration of A.P.M. showed spring-winter maxima and summer-autumn minia. The A.P.M. was lowest in the concentration at the 1.1~3.3$\mu\textrm{m}$ particulates, and the concentration increased as the particle size increased or decreased. But the concentrations of PAHs increased with the decrease in the particle size, and were predominant in winter. The correlations among the PAHs were high. And there fore, benzo(a)pyrene concentration could be considered as the representive of PAHs.

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Temporal and Spacial Variation of PAHs and Their Dry Deposition in Seoul (서울 도심 및 배경지역에서 PAHs의 시ㆍ공간적 분포와 건식 침적 특성)

  • 이지이;김용표;이승묵
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.11a
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    • pp.339-340
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    • 2003
  • 최근 들어서 환경유해물질이 인체에 미치는 영향에 대한 관심이 커지고 있다. 특히 환경 중에 존재하는 발암성 물질에 대한 연구가 활발히 진행되면서 이들 물질이 인체에 미치는 위해성이 밝혀지고 있다. 다환방향족탄화수소(Polycyclic Aromatic Hydrocarbons, PAHs) 는 환경에 존재하는 중요한 발암물질이자 돌연변이 유도체이다. PAHs는 화석연료의 불완전 연소 등에 의해 발생되고, 대표적인 오염원으로는 석탄 연소, 자동차, 가정 난방 등이 있다. (중략)

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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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다환방향족탄화수소(PAHs) 노출이 참굴, Crassostrea gigas, 혈구의 lysosomal membrane stability에 미치는 영향

  • 정우건;조상만
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.05a
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    • pp.389-390
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    • 2003
  • 리소즘은 가수분해효소와 같은 각종 효소를 저장하고 있고, 이러한 효소는 지방, 지질 및 단백질에 특이적으로 반응하여 세포내로 들어오는 이들 물질을 분해하는 기능을 담당한다. 또한 리소좀은 여러 가지 Xenobiotics에도 반응하는 것으로 알려지고 있다(Lowe et al., 1995, Shepard and Bradley, 2000), 리소즘막의 손상은 결국 Xenobiotic의 세포내 출입의 조절능을 상실하게 되고, 나아가 ATP-dependent proton pump의 손상을 일으키게 된다(Lowe et al., 1992). (중략)

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