Understanding of the formation mechanisms of secondary organic aerosols by real-time measurements of their precursors

2012 Fiscal Year Final Research Report

• Project Area: Impacts of aerosols in East Asia on plants and human health
• Project/Area Number: 20120003
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Complex systems
• Research Institution: Hokkaido University
• Principal Investigator: HIROKAWA Jun 北海道大学, 大学院・地球環境科学研究院, 准教授 (20262115)
• Co-Investigator(Kenkyū-buntansha): INOMATA Satoshi 独立行政法人国立環境研究所, 地球環境研究センター, 主任研究員 (80270586) ; TAKAHASHI Kenshi 京都大学, 生存圏研究所, 准教授 (10303596)
• Project Period (FY): 2008 – 2012
• Keywords: エアロゾル / 揮発性有機化合物 / 二次有機エアロゾル / 気相酸化反応 / 不均一反応 / 質量分析法 / レーザー分光法

Research Abstract

Atmospheric oxidation of volatile organic compounds (VOCs) and subsequent reactions can produce low-volatility species which contribute to secondary organic aerosols (SOAs). In this study, reaction probabilities for elementary steps were determined and new chemical mechanisms of SOA formation were proposed based on gas- and aerosol-phase analysis of reaction products.

Research Products

• [Journal Article] 化学イオン化質量分析法を用いた二次エアロゾル生成過程の研究 (2011)
  • Author(s): 廣川淳
  • Journal Title: エアロゾル研究 Volume: 26巻 Pages: 195-202
  • URL: https://www.jstage.jst.go.jp/browse/jar/26/3/_contents/-char/ja/
  • Peer Reviewed
• [Journal Article] A quantitative examination of the detection sensitivities of proton-transferreaction mass spectrometry for gaseous 2-propanol and acetic acid (2010)
  • Author(s): S. Inomata and H. Tanimoto
  • Journal Title: Bull. Chem. Soc. Jpn. Volume: 83巻 Pages: 900-904
  • DOI: DOI:10.1246/bcsj.20100043
  • Peer Reviewed
• [Journal Article] Kinetics and mechanism of chlorine-atom-initiated oxidation of allyl alcohol, 3-buten-2-ol, and 2-methyl-3-buten-2-ol (2010)
  • Author(s): K. Takahashi, J.-H. Xing, M. D. Hurley, and T. J. Wallington
  • Journal Title: J. Phys. Chem. A. Volume: 114巻 Pages: 4224-4231
  • DOI: DOI:10.1021/jp908104r
  • Peer Reviewed
• [Journal Article] In situ measurements of atmospheric nitrous acid by chemical ionization mass spectrometry using chloride ion transfer reactions (2009)
  • Author(s): J. Hirokawa, T. Kato, and F. Mafune
  • Journal Title: Anal. Chem. Volume: 81巻 Pages: 8380-8386
  • DOI: DOI:10.1021/ac901117b
  • Peer Reviewed
• [Journal Article] A deuterium-labeling study on the reproduction of hydronium ions in the PTR-MS detection of ethanol (2009)
  • Author(s): S. Inomata and H. Tanimoto
  • Journal Title: Int. J. Mass Spectrom Volume: 285巻 Pages: 95-99
  • DOI: DOI:10.1016/j.ijms.2009.05.001
  • Peer Reviewed
• [Journal Article] Kinetics and mechanism of the reaction of chlorine atoms with isoprene (2-methyl 1,3-butadiene, CH_2=C(CH_3)CH=CH_2) at 297 ±2K (2009)
  • Author(s): J.-H. Xing, K. Takahashi, M. D. Hurley, and T. J. Wallington
  • Journal Title: Chem. Phys. Lett. Volume: 472巻 Pages: 39-43
  • DOI: DOI:10.1016/j.cplett.2009.03.002
  • Peer Reviewed
• [Presentation] Product analysis in ethylene ozonolysis by chemical ionization mass spectrometry (2013)
  • Author(s): Y. Sakamoto, S. Inomata, H. Tanimoto, and J. Hirokawa
  • Organizer: 6th International Conference on Proton Transfer Reaction Mass Spectrometry and its Application
  • Place of Presentation: niversity Center Obergurgle(オースリア)
  • Year and Date: 2013-02-03
• [Presentation] Analysis of organic compounds in secondary organic aerosols by chemical ionization mass spectrometry and discussion on mechanism of isoprene ozonolysis (2013)
  • Author(s): S. Inomata, H. Tanimoto, K. Sato, J. Hirokawa, Y. Sakamoto, M. Okumura, and S. Tohno
  • Organizer: 6th International Conference on Proton Transfer Reaction Mass Spectrometry and its Application
  • Place of Presentation: University Center Obergurgle(オーストリア)
  • Year and Date: 2013-02-03
• [Presentation] Secondary organic aerosol formation from the isoprene ozonolysis (2012)
  • Author(s): J. Hirokawa, Y. Sakamoto, S. Inomata, and K. Takahashi
  • Organizer: International Symposium on Aerosols in East Asia and Their Impacts on Plants and Human Health
  • Place of Presentation: 東京農工大学(小金井市)
  • Year and Date: 2012-11-29
• [Presentation] Analysis of organic components in secondary organic aerosols by proton transfer reaction mass spectrometry and discussion on oxidation mechanism of isoprene (2012)
  • Author(s): S. Inomata, H. Tanimoto, K. Sato, J. Hirokawa, Y. Sakamoto, M. Okumura, and S. Tohno
  • Organizer: International Symposium on Aerosols in East Asia and Their Impacts on Plants and Human Health
  • Place of Presentation: 東京農工大学(小金井市)
  • Year and Date: 2012-11-29
• [Presentation] Pulsed laser photolysis - laser induced fluorescence study of the gas-phase reactions in relevance to atmospheric oxidation processes of isoprene (2012)
  • Author(s): K. Takahashi and T. J. Wallington
  • Organizer: International Symposium on Aerosols in East Asia and Their Impacts on Plants and Human Health
  • Place of Presentation: 東京農工大学(小金井市)
  • Year and Date: 2012-11-29