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Fundamental study on production mechanism and control of long-lived gas-phase radical from combustion

Research Project

Project/Area Number 03453091
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 有機工業化学
Research InstitutionThe University of Tokyo

Principal Investigator

TAMURA Masamitsu  The University of Tokyo, Faculty of Engineering, Professor, 工学部, 教授 (30114557)

Co-Investigator(Kenkyū-buntansha) AKUTSU Yoshiaki  The University of Tokyo, Faculty of Engineering, Research Associate, 工学部, 助手 (30175814)
ARAI Mitsuru  The University of Tokyo, Faculty of Engineering, Associate Professor, 工学部, 助教授 (30232028)
Project Period (FY) 1991 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥5,300,000 (Direct Cost: ¥5,300,000)
Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1992: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1991: ¥4,000,000 (Direct Cost: ¥4,000,000)
KeywordsGas-phase radical / Combustion smoke / ESR / Spin trap / 燃焼スモ-ク
Research Abstract

It is known that the gas-phase combustion smoke of combustibles produce oxygen-centered gas-phase radicals which are highly reactive and apparently long-live. And it is also reported that the radicals might be toxic for living body. In order to obtain basic information about the radicals, analyzes of production behavior, production mechanisms, reaction behavior and inhibitation mechanisms of the radicals have been carried out. And following results have been obtained.
1. Polymers which have oxygen in the molecular structure such as PMMA or PVA produce the radicals without supplying oxygen externally during thermal decomposition.
2. Production behavior of the radicals in gas-phase combustion smoke is similar to the production behavior of hydrocarbons whose carbon number is 3-4.
3. The radicals can cause oxidation of cysteine, suggesting malignant biological effects.
4. Hydrogen halides and hydrogen cyanate which come from combustion of materials containing halogen or nitrogen inhibit the production of the radicals in gas-phase combustion smoke.
5. Diphenylamine which is believed to be a radical scavenger might encourage the production of the radicals in benzene solution under certain condition.

Report

(4 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • 1991 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 大久保洋一: "気相シガレットスモークおよびポリメタクリル酸メチルの気相燃焼スモークによるシステインの酸化" 大気汚染学会誌. 28. 1-10 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 古澤貢治: "可燃物の燃焼スモークから生成する気相ラジカルの抑制" 大気汚染学会誌 投稿中. (発表予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 古澤貢治: "ジフェニルアミンによる気相スモークラジカルの抑制" 大気汚染学会誌 投稿準備中. (発表予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Yoichi Okubo, Wei-Hong Gu, Yoshiaki Akutsu, Mitsuru Arai and Masamitsu Tamura: ""Oxidation of Cystein by Gas-Phase Cigarette Smoke and by Combustion smoke of Poly-Methyl Methacrylate"" Journal of Japan Society of Air Pollution. 28-1. 1-10 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Koji Furusawa, Yuichi Kawakatsu, Yoshiaki Akutsu, Mitsuru Arai and Masamitsu Tamura: ""Inhibitation of Gas-Phase Radicals in Smoke from Combustion"" Journal of Japan Society of Air Pollution. (Submitted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Koji Furusawa, Toshiyuki Kawamura, Hitoshi Otomo, Yoshiaki Akutsu, Mitsuru Arai and Masamitsu Tamura: ""Inhibitation of Gas-Phase Radicals by Diphenylamine"" Journal of Japan Society of Air Pollution. (In preparation).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 大久保 洋一: "気相シガレットスモークおよびポリメタクリル酸メチルの気相燃焼スモークによるシステインの酸化" 大気汚染学会誌. 28. 1-10 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 大久保 洋一: "可燃物の燃焼スモ-クによるリノ-ル酸メチルの自動酸化" 大気汚染学会誌. 26. 171-175 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 古澤 貢治: "可燃物の燃焼から生成する気相ラジカルの抑制" 大気汚染学会誌.

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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