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Applications of time-resolved laser fluorescence spectroscopy to the environmental biogeochemistry of actinides

環境中のアクチノイドに関する生物地球化学への時間分解型レーザー蛍光分光法の適用

Collins, R. N.*; 斉藤 拓巳*; 青柳 登; Payne, T. E.*; 木村 貴海; Waite, T. D.*

Collins, R. N.*; Saito, Takumi*; Aoyagi, Noboru; Payne, T. E.*; Kimura, Takaumi; Waite, T. D.*

Time-resolved laser fluorescence spectroscopy (TRLFS) is a useful means of identifying certain actinide species resulting from various biogeochemical processes. In general, TRLFS differentiates chemical species of a fluorescent metal ion through analysis of different excitation and emission spectra and decay lifetimes. The main advantage of TRLFS over other advanced spectroscopic techniques is the ability to determine in situ metal speciation at environmentally relevant micromolar to picomolar concentrations. In the context of environmental biogeochemistry, TRLFS has principally been applied to studies of (1) metal speciation in aqueous and solid phases and (2) the coordination environment of metal ions sorbed to mineral and bacterial surfaces. In this review, the principles of TRLFS are described, and the literature reporting the application of this methodology to the speciation of actinides in systems of biogeochemical interest is assessed. Significant developments in TRLFS methodology and advanced data analysis are highlighted, and we outline how these developments have the potential to further our mechanistic understanding of actinide biogeochemistry.

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パーセンタイル:39.23

分野:Environmental Sciences

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