Sulfur and oxygen isotope anomaly to detect the stratospheric volcanic eruption

• Project/Area Number: 25887025
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Geochemistry/Cosmochemistry
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: HATTORI Shohei 東京工業大学, 総合理工学研究科(研究院), 助教 (70700152)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 質量非依存分別 / 硫酸塩 / 大規模火山噴火 / エアロゾル / 硫酸 / 三酸素同位体組成 / 硫酸エアロゾル

Outline of Final Research Achievements

We have developed method measuring triple oxygen isotope ratios in sulfate, and this method enable us to analyze only 23 min/sample. We also reduce sample amount for multiple sulfur isotope analysis, and thus, we have now ready to measure both oxygen and sulfur mass-independent fractionation (MIF) in sulfate samples.

Research Products

• [Journal Article] Determination of the sulfur isotope ratio in carbonyl sulfide using gas chromatography/isotope ratio mass spectrometry on fragment ions 32S+, 33S+, and 34S+, (2014)
  • Author(s): Shohei Hattori, Akari Toyoda, Sakae Toyoda, Sakiko Ishino, Yuichiro Ueno, and Naohiro Yoshida
  • Journal Title: Anal. Chem. Volume: 87 Issue: 1 Pages: 477-84
  • DOI: 10.1021/ac502704d
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] フラグメンテーション法を用いた硫化カルボニルの硫黄同位体計測法：測定法とその応用 (2014)
  • Author(s): 服部祥平、豊田朱梨、豊田栄、石野咲子、上野雄一郎、吉田尚弘
  • Organizer: 日本地球化学会第61回年会
  • Place of Presentation: 富山大学(富山市)
  • Year and Date: 2014-09-16 – 2014-09-18
• [Presentation] Determination of sulfur isotopic composition of carbonyl sulfide in GC-IRMS using fragmentation ions 32S, 33S and 34S (2014)
  • Author(s): S. Hattori, A. Toyoda, S. Toyoda, S. Ishino, Y. Ueno, N. Yoshida
  • Organizer: ISI2014
  • Place of Presentation: 東京工業大学（東京）
  • Year and Date: 2014-07-01 – 2014-07-04
• [Presentation] Oxygen and sulfur isotopic analysis of ion-induced sulfate production reaction initiated via proton beam (2014)
  • Author(s): S. Ishino, S. Hattori, S. Tomita, Y. Nakai, and N. Yoshida
  • Organizer: ISI2014
  • Place of Presentation: 東京工業大学（東京）
  • Year and Date: 2014-07-01 – 2014-07-04
• [Presentation] OCS and SO2 isotope effects in photochemistry: Implications for background and volcanic stratospheric sulfate aerosols (Invited) (2013)
  • Author(s): Shohei Hattori, Johan Schmidt, Matthew Johnson, Sebastian Danielache, Yuichiro Ueno, Naohiro Yoshida
  • Organizer: AGU fall meeting
  • Place of Presentation: サンフランシスコ
  • Invited