Development of in-situ near-field fluorescence and Raman microscopy and structural analyses of radionuclide adsorption

• Project/Area Number: 20246137
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: The University of Tokyo
• Principal Investigator: TANAKA Satoru 東京大学, 大学院・工学系研究科, 教授 (10114547)
• Co-Investigator(Kenkyū-buntansha): NAGASAKI Shinya 東京大学, 大学院・工学系研究科, 教授 (20240723) ; SAITO Takumi 東京大学, 大学院・工学系研究科, 助教 (90436543)
• Co-Investigator(Renkei-kenkyūsha): KIMURA Takaumi 独立行政法人日本原子力研究開発機構, 原子力基礎工学研究部門, グループリーダー (20354897)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥47,840,000 (Direct Cost: ¥36,800,000、Indirect Cost: ¥11,040,000); Fiscal Year 2010: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2009: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2008: ¥37,440,000 (Direct Cost: ¥28,800,000、Indirect Cost: ¥8,640,000)
• Keywords: バックエンド / 近接場光顕微鏡 / 吸着構造 / 天然バリア / 表面錯体 / 放射性廃棄物処分 / 移行遅延 / 近接場光 / 性能評価 / 放射性核種 / 吸着 / 移行 / 蛍光分光 / アクチニド元素

Research Abstract

Subsurface environments from the vicinity of disposed wastes to our-living biosphere are called natural barrier and expected to provide barrier function to retard the migration of released radionuclides through the diffusion and sorption to rocks. In order to improve the performance assessment of nuclear waste disposal, one must understand such sorption phenomena and model it. In this study, near-field optical technique was focused and used to detect emission from radionuclides adsorbed on the surfaces of minerals, which could be major constituents of real subsurface environments. The obtained fluorescence spectra and decays were further used to investigate their sorption structures on the basis of known surface structures of the surfaces.

Research Products

• [Journal Article] Surface Speciation of Eu3+Ads+AX1374orbed on Kaolinite by Time-Resolved Laser Fluorescence Spectroscopy(TRLFS) and Parallel Factor Analysis(PARAFAC) (2012)
  • Author(s): Ishida, K., Saito, T., Aoyagi, N., Kimura, T., Nagaishi, R., Nagasaki, S. and Tanaka, S.
  • Journal Title: J. Colloid Interface Sci Volume: 374(1) Pages: 258-266
• [Journal Article] Surface Speciation of Eu^<3+> Adsorbed on Kaolinite by Time-Resolved Laser Fluorescence Spectroscopy (TRLFS) and Parallel Factor Analysis (PARAFAC) (2012)
  • Author(s): Ishida, K., Saito, T., Aoyagi, N., Kimura, T., Nagaishi, R., Nagasaki, S., Tanaka, S.
  • Journal Title: Journal of Colloid and Interface Science Volume: 374 Pages: 258-266
  • Peer Reviewed
• [Journal Article] Application of Parallel Factor Analysis for Time-Resolved Laser Fluorescence Spectroscopy : Implication for Metal Speciation Study (2010)
  • Author(s): Saito, T., Sao, H., Ishida, K., Aoyagi, N., Kimura, T., Nagasaki, S. and Tanaka, S.
  • Journal Title: Environ. Sci. Technol Volume: 44 Pages: 5055-5060
• [Journal Article] Adsorption of Eu(III) on a Heterogeneous Surface Studied by Time-Resolved Laser Fluorescence Microscopy(TRLFM) (2009)
  • Author(s): Ishida, K., Kimura, T., Saito, T. and Tanaka, S.
  • Journal Title: Environ. Sci. Technol Volume: 43 Pages: 1744-1749
• [Journal Article] Adsorption of Eu(III) on a Heterogeneous Surface Studied by Time-Resolved Laser Fluorescence Microscopy (TRLFM) (2009)
  • Author(s): Ishida, K., Kimura, T., Saito, T. and Tanaka, S.
  • Journal Title: Environmental Science & Technology 43 Pages: 1744-1749
  • Peer Reviewed
• [Presentation] Actinide Adsorption at Solid-Liquid Interfaces : Current Status and Future Challenges (2010)
  • Author(s): Saito, T.
  • Organizer: PACIFICHEM 2010
  • Place of Presentation: Honolulu, Hawaii(招待講演)
  • Year and Date: 2010-12-15
• [Presentation] 時間分解型近接場蛍光顕微鏡の開発と核種/鉱物吸着系への適用 (2010)
  • Author(s): 石田圭輔, 他
  • Organizer: 日本原子力学会2010年春の年会
  • Place of Presentation: 茨城大学
  • Year and Date: 2010-03-28
• [Presentation] Parallel factor analysis for time-resolved laser fluorescence spectroscopy : A powerful tool for speciation studies (2010)
  • Author(s): Saito, T., Aoyagi, N., Kimura, T., Nagasaki, S. and Tanaka, S.
  • Organizer: Goldschmidt 2010
  • Place of Presentation: Knoxville, USA
• [Presentation] 時間分解型レーザ誘起発光分光法を用いたEu(III)のカオリナイト表面錯体に関する研究:H2O/D2O系における蛍光測定 (2009)
  • Author(s): 石田圭輔,斉藤拓巳,田中知,長崎晋也,木村貴海
  • Organizer: 日本原子力学会春の年会
  • Place of Presentation: 東京工業大学
  • Year and Date: 2009-03-24
• [Presentation] ADSORPTION OF Eu(III) ON A HETEROGENEOUS SURFACE STUDIED BY TIME-RESOLVED LASER FLUORESCENCE MICROSCOPY(TRLFM) (2009)
  • Author(s): Ishida, K., Kimura, T., Saito, T. and Tanaka, S.
  • Organizer: Migration' 09
  • Place of Presentation: Kennewich, USA
• [Presentation] STUDY ON THE SURFACE COMPLEXES OF Eu(III) ON KAOLINITE BY TIME-RESOLVED LASER FLUORESCENCE SPECTROSCPY(TRLFS): TRLFS MEASUERMENT IN H2O/D2O SYSTEMS (2009)
  • Author(s): Ishida, K., Saito, T., Aoyagi, N., Kimura, T., Nagasaki, S. and Tanaka, S.
  • Organizer: Migration' 09
  • Place of Presentation: Kennewich, USA
• [Presentation] Fluorescence Lifetime ImagingMicroscopy applied for Eu(III) adsorbed on Granite (2008)
  • Author(s): Ishida, K., Kimura, T., Saito, T., Toraishi, T. and Tanaka, S.
  • Organizer: IAP 2008
  • Place of Presentation: Kyoto, Japan
• [Remarks]
  • URL: http://www.flanker.n.t.u-tokyo.ac.jp/environment/modules/pico/index.php/content0017.html
• [Remarks]
  • URL: http://www.flanker.n.t.u-tokyo.ac.jp/environment/modules/pico/index.php/content0017.html