• 제목/요약/키워드: Nitro-PAH

검색결과 4건 처리시간 0.019초

In vitro mutagenicity and genotoxicity study of PAHs and nitro-PAHs using the bacterial revertant (Ames) test and alkaline single cell gel electrophorosis (Comet) assay

  • Kim, Soung-Ho;Oh, Seung-Min;Chung, Kyu-Hyuck
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.284.1-284.1
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    • 2002
  • In previous studies, we demonstrated that ambient PM collected from urban site of Korea air could induce DNA damage, Various mutagens and carcinogens present in the urban air differ according to the source of the pollutants. Polycyclic aromatic hydrocarbons (PAHs) and their nitrated compound are produced in the combustion of fossil fuels as diesel emission exhausts. In recent, PAH and nitro-PAH have been identified in urban air particulate matter (PM). and some of them were found to be tumorigenic in experimental animals and humans. (omitted)

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Changes in Concentration Levels of Polycyclic Aromatic Compounds Associated with Airborne Particulate Matter in Downtown Tokyo after Introducing Government Diesel Vehicle Controls

  • Kojima, Yuki;Inazu, Koji;Hisamatsu, Yoshiharu;Okochi, Hiroshi;Baba, Toshihide;Nagoya, Toshio
    • Asian Journal of Atmospheric Environment
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    • 제4권1호
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    • pp.1-8
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    • 2010
  • The effectiveness of the government regulation on tail-pipe emission for diesel vehicles issued in 2003 in Tokyo was evaluated in this study. Variations in annual average concentrations of polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs associated with airborne particulate matter were investigated in connection with the variation in airborne elemental carbon (EC) concentration in downtown Tokyo, Japan in 2006-2007 and in 1997-1998. The annual average concentrations of EC, seven different PAHs, and 1-nitropyrene were found to have decreased significantly from 1997-1998 to 2006-2007. The most prominent decrease in atmospheric concentration was observed for 1-nitropyrene, which is a representative nitro-PAH originating from diesel vehicles. This indicated that the government control has worked to considerably reduce both atmospheric mutagens and airborne particulate matter. In contrast, the concentrations of two nitro-PAHs, 2-nitrofluoranthene and 2-nitropyrene, remained the same. These nitro-PAHs are known to be formed by atmospheric nitration of their parent PAHs, and this result suggested factors other than the concentration of parent PAHs and $NO_2$ affects the degree of atmospheric formation of nitro-PAHs.

RPLC/DAD를 이용한 Polycyclic Aromatic Hydrocarbon류의 분석에 관한 연구(I) (A Study on the Analysis of Polycyclic Aromatic Hydrocarbons by RPLC/DAD (I))

  • 이원;홍지은;박송자;표희수
    • 분석과학
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    • 제10권5호
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    • pp.315-324
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    • 1997
  • Benzo(a)pyrene을 비롯한 16종의 polycyclic aromatic hydrocarbon(PAHs)과 4종의 nitro-PAHs를 reversed-phase liquid chromatography/diode array detection (RPLC/DAD)를 이용하여 기울기용리법으로 분리하고, PAH류의 머무름거동에 영향을 미치는 인자들, 즉 탄소수, F인자, L/B ratio, 물에 대한 용해도 및 방해수소원자쌍의 수와 시료의 머무름과의 상관관계를 고찰하였다. 대부분의 PAH류는 탄소원자수와 F값이 커질수록 logk'이 증가하는 사실을 확인하였다. 그리고 몇 가지 이성체들과 nitro-PAH류들은 용해도가 크고, L/B값이 작으며, 방해수소원자쌍의 수가 많을수록 먼저 용리됨을 확인하였다. 각 PAH류의 검출한계는 100~500ng/mL 범위로 나타났으며, 실제 물시료에 대한 검출한계(method detection limit, MDL)는 0.1~0.5ng/mL 범위였다.

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