Comparison of PAHs, Nitro-PAHs and Oxy-PAHs associated with airborne particulate matter at roadside and urban background sites in downtown Tokyo, Japan

Yuki Kojima*, Koji Inazu, Yoshiharu Hisamatsu, Hiroshi Okochi, Toshihide Baba, Toshio Nagoya

*この研究の対応する著者

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Atmospheric polycyclic aromatic hydrocarbons (PAHs), nitro-PAHs and oxy-PAHs are emitted from primary sources. Some nitro-PAHs and oxy-PAHs can also arise from secondary formation in the atmosphere. To assess the relative importance of these sources, the polycyclic aromatic compound (PAC) concentrations were determined at a roadside (Roadside site) and on a rooftop (Urban Background site) in downtown Tokyo Japan. The concentrations of PAHs, 1-nitropyrene and oxy-PAHs at the Roadside site were higher than those at the Urban Background site, while 2-nitrofluoranthene levels were the same at both sites. However, the mean ratios of concentrations at the Urban Background site to the Roadside site were in the order 1,8-naphthalic anhydride>9,10- anthraquinone>PAHs or 1-nitropyrene or acenaphthenequinone or benzanthrone. This suggests that in addition to vehicle emissions, a considerable fraction of some of the oxy-PAHs studied originates from another source, which might be secondary formation by atmospheric PAH degradation, and this contribution varied among the oxy-PAHs.

本文言語English
ページ(範囲)321-333
ページ数13
ジャーナルPolycyclic Aromatic Compounds
30
5
DOI
出版ステータスPublished - 2010 10

ASJC Scopus subject areas

  • ポリマーおよびプラスチック
  • 有機化学
  • 材料化学

フィンガープリント

「Comparison of PAHs, Nitro-PAHs and Oxy-PAHs associated with airborne particulate matter at roadside and urban background sites in downtown Tokyo, Japan」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル