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

原位近场荧光和拉曼显微镜的发展以及放射性核素吸附的结构分析

• 批准号: 20246137
• 负责人: TANAKA Satoru
• 金额: $ 30.62万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20246137/
• 关键词: 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

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.

从处置废物附近到我们生活的生物圈的地下环境被称为天然屏障，预计将提供屏障功能，以延缓释放的放射性核素通过扩散和吸附到岩石上的迁移。为了提高核废料处理的性能评价，必须了解这种吸附现象并建立模型。在这项研究中，近场光学技术被用于检测矿物表面吸附的放射性核素的发射，这些放射性核素可能是真实地下环境的主要成分。在已知表面结构的基础上，利用所得的荧光光谱和衰减进一步研究了它们的吸附结构。

项目成果

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

时间分辨近场荧光显微镜的发展及其在核素/矿物吸附系统中的应用

• 发表时间: 2010
• 作者: 石田圭輔;他
• 通讯作者: 他

Surface speciation of Eu3+ adsorbed on kaolinite by time-resolved laser fluorescence spectroscopy (TRLFS) and parallel factor analysis (PARAFAC).

• DOI: 10.1016/j.jcis.2012.01.060
• 发表时间: 2012-05
• 期刊: Journal of colloid and interface science
• 影响因子: 9.9
• 作者: Keisuke Ishida;Takumi Saito;N. Aoyagi;T. Kimura;R. Nagaishi;S. Nagasaki;Satoru Tanaka

Adsorption of Eu(III) on a Heterogeneous Surface Studied by Time-Resolved Laser Fluorescence Microscopy (TRLFM)

• DOI: 10.1021/es8024287
• 发表时间: 2009-03-15
• 期刊: ENVIRONMENTAL SCIENCE & TECHNOLOGY
• 影响因子: 11.4
• 作者: Ishida, Keisuke;Kimura, Takaumi;Tanaka, Satoru
• 通讯作者: Tanaka, Satoru

Parallel factor analysis for time-resolved laser fluorescence spectroscopy : A powerful tool for speciation studies

时间分辨激光荧光光谱的平行因子分析：形态研究的强大工具

• 发表时间: 2010
• 作者: Saito;T.;Aoyagi;N.;Kimura;T.;Nagasaki;S. and Tanaka;S.
• 通讯作者: S.

Actinide Adsorption at Solid-Liquid Interfaces : Current Status and Future Challenges

固液界面的锕系元素吸附：现状和未来的挑战

• 发表时间: 2010
• 作者: Saito;T.
• 通讯作者: T.