Development of measuring exchange of ultrafine particles using radioactive nuclide as a tracer

• Project/Area Number: 20810045
• Research Category: Grant-in-Aid for Young Scientists (Start-up)
• Allocation Type: Single-year Grants
• Research Field: Environmental dynamic analysis
• Research Institution: National Institute of Radiological Sciences
• Principal Investigator: SORIMACHI Atsuyuki National Institute of Radiological Sciences, 放射線防護研究センター, 研究員 (60466050)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,289,000 (Direct Cost: ¥2,530,000、Indirect Cost: ¥759,000); Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2008: ¥1,729,000 (Direct Cost: ¥1,330,000、Indirect Cost: ¥399,000)
• Keywords: 環境動態解析 / エアロゾル / 放射線計測 / 乾性沈着

Research Abstract

It remains to be fully elucidated how the presence of aerosol particles influences plant and human. Removal mechanisms of airborne substances over the ground consist mainly of wet and dry deposition processes. Although the mechanism of dry deposition is more complicate than wet deposition, little information on dry deposition of ultrafine aerosol particles is available. In this study we developed the implement of measuring the dry deposition flux of ultrafine particles using unattached radon progeny as a tracer.

Research Products

• [Journal Article] 「環境中におけるラドン」に関する国際会議報告 (2009)
  • Author(s): 反町篤行
  • Journal Title: 保健物理 Vol.44 Pages: 271-273
  • NAID: 110007467653
• [Journal Article] 乾性沈着に関する研究への取り組み (2009)
  • Author(s): 反町篤行
  • Journal Title: エアロゾル研究 Vol.24 Pages: 299-300
• [Journal Article] 「環境中におけるラドン」に関する国際会議報告 (2009)
  • Author(s): 反町篤行
  • Journal Title: 保健物理 44 Pages: 271-273
  • NAID: 110007467653
• [Presentation] Performance test of thoron progeny monitor (2009)
  • Author(s): Sorimachi A., Kranrod C., Janik M., Tokonami S.
  • Organizer: International Workshop on Radiation Biology and Radiation Protection
  • Place of Presentation: 中国・上海
  • Year and Date: 2009-10-16
• [Presentation] Performance test of thoron progeny monitor (2009)
  • Author(s): Sorimachi A., Kranrod C., Janik M., Tokonami S.
  • Organizer: International Workshop on Radiation Biology and Radiation Protection
  • Place of Presentation: Shanghai, China
  • Year and Date: 2009-10-16
• [Presentation] Upgrade of the NIRS thoron chamber-its performance as the radioactive aerosol chamber (2009)
  • Author(s): Sorimachi A., Kranrod C., Janik M., Hosoda M., Hassan N.M., Fukushi M., Sahoo S.K., Ishikawa T., Tokonami S.
  • Organizer: International Conference on RADON in ENVIRONMENT
  • Place of Presentation: ポーランド・ザコパネ
  • Year and Date: 2009-05-13
• [Presentation] Upgrade of the NIRS thoron-chamber-its performance as the radioactive aerosol chamber- (2009)
  • Author(s): Sorimachi A., Kranrod C., Janik M., Hosoda M., Hassan N.M., Fukushi M., Sahoo S.K., Ishikawa T., Tokonami S.
  • Organizer: International Conference on RADON in ENVIRONMENT
  • Place of Presentation: Zakopane, Poland
  • Year and Date: 2009-05-13
• [Presentation] Development of aerosol dry deposition flux measurement with relaxed eddy accumulation technique (2009)
  • Author(s): Sorimachi A.
  • Organizer: International Workshop on Atmospheric Deposition in East Asia
  • Place of Presentation: 東京都日野市
  • Year and Date: 2009-02-18
• [Presentation] Development of aerosol dry deposition flux measurement with relaxed eddy accumulation technique (2009)
  • Author(s): Sorimachi A.
  • Organizer: Workshop on Atmospheric Deposition in East Asia
  • Place of Presentation: 明星大学,東京都日野市
  • Year and Date: 2009-02-18