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

2010 Fiscal Year Final Research Report

• 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
• Keywords: バックエンド

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] 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
• [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
  • Year and Date: 20100700
• [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
  • Year and Date: 20090900
• [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
  • Year and Date: 20090900
• [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
  • Year and Date: 20080600
• [Remarks]
  • URL: http://www.flanker.n.t.u-tokyo.ac.jp/environment/modules/pico/index.php/content0017.html