Evaluation of speciation technology : workshop proceedings, Tokai-mura, Ibaraki, Japan, 26-28 October, 1999.

It Has Been Widely Recognised Among Researchers That Speciation Data Are Essential For Proper And Reliable Modelling Of Radionuclide Behaviour, Which Is Studied Inter Alia In The Context Of Radioactive Waste Management. Participants At The Oecd/nea Workshop On Evaluation Of Speciation Technology Reviewed The Various Techniques Used To Identify Different Species Of Actinide And Fission Product Elements Present In Nuclear Waste And Nuclear Reprocessing Streams. The Review Takes Into Account The Advantages, Disadvantages And Limitations Of The Various Methods In Relation To Their Field Of Application. Recommendations For Future R&d Are Also Provided. These Proceedings Will Primarily Be Of Interest To Chemists Specialised In Separation Techniques And Radioactive Waste Management Experts. Foreword -- Executive Summary -- Opening Session: Speciation Imperatives For Waste Management And Environmental Pollution By R. G. Wymer -- Session A. Methods For Trace Concentration Speciation ( 10 -6 M) -- -speciation From Photon To Ion Detection By C. Moulin -- Determination Of The Hydration Number Of Actinides (iii) And Lanthanides (iii) By Luminescence Lifetime Measurement And Its Application To The Speciation Study By T. Kimura, Y. Kato, H. Takeishi, Y. Takahashki, Y. Minai, And G. R. Choppin -- Session C. Methods For Empirical Formula And Molecular Structure Determination --^ -x-ray Absorption Fine Structure Spectroscopy For Radionuclide Speciation Studies By M. A. Denecke, J. Rothe, C. Pohlmann, H. Geckeis, D. Degering, And J. Janssen -- Magnetic Resonance Techniques In Speciation Of Actinides And Fission Products By J. F. Desreux, B. Lambert, And V. Jacques -- An Overivew Of Actinide Redox Speciation Methods, Other Than Chemical Separation Techniques: Their Applicability, Advantages, And Limitations By D. Rai, And N. J. Hess -- Chemical Separation Methods For Redox Speciation Of Actinides By A. Saito -- Session E. Predictive Approach To Speciation -- -estimation Of Thermodynamic Data In Assessing The Geological Disposal Of Radioactive Waste By D. Read -- Chemical Analogy In The Case Of Hydroysis Species Of F-elements By H. Moriyama, H. Yamana, K. Fujiwara, And A. Kitamura -- Poster Session -- Part A. Methods For Trace Concentration Speciation ( 10 -6 M) -- -cm(iii) Speciation In Brines By Time Resolved Laser Fluorescence Spectroscopy By P. Paviet-hartmann, Th Fanghanel, R. Klenze, Th. Konnecke, J. I. Kim, W. Hauser, H.weger, I. K Park, K. H. Chung -- Speciation Analysis On Eu(iii) In Aquuous Solution Using Laser Induced Breakdown Spectroscopy By H> Hotokezaka, S. Tanaka, And S. Nagasaki --^ Actinyl (vi) Speciation In Concentrated Sodium Chliride Solutions By W. Runde, M. P. Neu, C. Van Pelt, S. Reilly, And Y. Xu -- Characterisation Of Oxide Films Formed On Steel Surface In Bwr Environment By Y. Kameo -- Actinide Sequestering Agents: Design, Structural And Biological Evaluations By J. Xu, P. W. Durbin, And K. N. Raymond -- Transuranium Compounds Characterisation Facility At Itu-karlsruhe By F. Wastin, E. Colineau, T. Gouder, J. Rebizant, And G.h.lander -- Speciation Of Pu(iv) Complexes With Weak Ligands From Visible Spectra By J. M.berg, And D. K. Veirs -- Laser-induced Luminescence Lifetime Measurement As An Analytical Probe For Speciation Of Polycarboxylates In Aqueous Solutions By Y. Takahashi, T. Kimura, Y. Kato, And Y. Minai -- Part C. Methods For Empirical Formula And Molecular Structure Determination -- -direct Spectroscopic Speciation Of Actinide Ions At The Water/mineral Interface By R. Klenze --^ Oxidation State And Structure Of Actinides In Environmental Samples Using Synchrotron-based Techniques By D. T. Read, A. J. Kropf, S. B. Aase, S.zygmunt, And L. Curtiss -- Coordination Properties Of Diglycolamide (dga) To Trivalent Curium And Lanthanides Studied By Xas, Xrd, And Xps Methods By T. Yaita, M. Hirata, H. Narita, S. Tachimori, H. Yamamoto, N. M. Edelstein, J. J. Bucher, D. K. Shuh, And L. Rao -- Speciation Of Uranium In Minerals By Sem, Tem, U-pixe, Xps, And Xafs By T. Ohnuki, H. Isobe, T. Kamila, T. Sakai, And T. Murakami -- Part D. Methods For Redox Speciation -- -electroanalytical Data On Uranium, Neptunium And Plutonium Ions In Acidic Aqueous Solutions By S. Kihara, K. Maeda, Y. Yoshida, H. Aoyagi, Y. Kitatsuji, And O. Shirai -- Polarographic Validation Of Chemical Speciation In Models By J. R. Duffield, J. A. Jarratt --^ Separation And Determination Of Uranium (iv, Vi) By High-performance Extraction Chromatography With 2-thenoyltrifluoroacetone And Citric Acid By H. Imura, M. Michiguchi, K. Nakano, K. Ohashi, H. Aoyagi, And Z. Yoshida -- Voltametric Speciation Of U(vi) In The Aqueous Solution Of Ph 2-6 Under Co2 Gas/agueous Solution/uo2co3 Sold Phases Equilibrium By Z. Yoshida, T. Kimura, Y. Kato, Y. Kitatsuji, H. Aoyagi, Y. Meguro, And S. Kihara -- Ion-selective Electrod Method For The Speciation Of Actinide Ions By Y. Kitatsjui, H. Aoyagi, Z. Yoshida, And S. Kihara -- Redox Speciation Of Np In Tbp Extraction Process Based On Electrochemical Oxidation State Control Of Np By K-w Kim,, K-c Song, E-h Lee, I-k Choi And J-h Yoo -- Part E. Predictive Approach To Speciation -- -contribution To Lanthanide And Actinide Speciation: Thermodynamic Studies Of Hydroxycarbonate Species By F. Rorif, J. Fuger, And J. F. Desreux -- Data Processing For The Determination Of Stability Constants By O. Tochiyama --^ Chemometric And Computer-intensive Techniques For Speciation By G. Meinrath, T. Kimura, Y. Kato, Z. Yoshida, And S. Lis -- Purex Process Modelling - Do We Really Need Speciation Data? By R. J. Taylor And I. May -- Subgroup Reports -- -trace Concentration Speciation -- Methods For Macro Concentration Speciation -- Methods For Empirical Formula, Molecular Structure Determination, And Colloid Characterisation -- An Overview Of Actinide Redox Speciation Methods: Their Applicability, Advantages, And Limitations -- Predictive Approach To Speciation -- Recommendation -- Closing Remarks -- Annex 1. List Of Participants -- Annex 2. Workshop Organisation The Workshop On Evaluation Of Speciation Technology Was Successfully Held At The Japan Atomic Energy Research Institute (jaeri), From 26-28 October 1999 ...--foreword. Includes Bibliographic References.