Determination of plutonium oxidation states at trace levels pertinent to nuclear waste disposal
Tóm tắt
A scheme was developed for the determination of oxidation states of plutonium in environmental samples. The method involves a combination of solvent extractions and coprecipitation. It was tested on solutions with both high-level and trace-level concentrations. The scheme was used to determine Pu oxidation states in solutions from solubility experiments in groundwater from a potential nuclear waste disposal site. At steady-state conditions, Pu was found to be soluble predominantly as Pu(V) and Pu(VI).
Tài liệu tham khảo
S. C. FOTI, E. C. FREILING, Talanta, 11 (1964) 385.
E. A. BONDIETTI, S. A. REYNOLDS, Proc. on Actinide-Sediment Reactions Working Meeting, Report BNWL-2117, Seattle, Washington, 1976, p. 505.
P. A. BERTRAND, G. R. CHOPPIN, Radiochim. Acta, 31 (1982) 135.
A. SAITO, G. R. CHOPPIN, Anal. Chem., 55 (1983) 2454.
H. GEHMECKER, N. TRAUTMANN, G. HERRMANN, Radiochim. Acta, 40 (1986) 81.
D. RAI, Radiochim. Acta, 35 (1984) 97.
D. M. NELSON, M. B. LOVETT, Nature, 276 (1978) 599.
J. M. CLEVELAND, T. F. REES, K. L. NASH, Nucl. Technol., 62 (1983) 298.
D. N. EDGINGTON, Techniques for Identifying Transuranic Speciation in Aquatic Environments, Proc. of Technical Committee Meeting, ISPRA 1980, I.A.E.A., Vienna 1981, p. 3.
T. W. NEWTON, V. L. RUNDBERG, Plutonium Chemistry in Near-Neutral Solution, Reports LA-9577-PR, LA-9486-PR, LA-9293-PR, Los Alamos National Laboratory, Los Alamos, New Mexico, 1983.
D. COHEN, J. Inorg. Nucl. Chem., 18 (1961) 207.
D. COHEN, J. Inorg. Nucl. Chem., 18 (1961) 211.
S. C. LEE, R. C. GATTI, H. NITSCHE, Indirect Determination of Plutonium by use of Gamma- andL X-Ray Spectroscopy, 193rd ACS National Meeting, April 5–10, 1987, Denver, Colorado.
A. E. OGARD, J. F. KERRISK, Groundwater Chemistry along the Flow Path between a Proposed Repository Site and the Accessible Environment. Report LA-10188 MS, Los Alamos National Laboratory, Los Alamos, New Mexico, 1984.
H. NITSCHE, N. EDELSTEIN, Radiochim. Acta, 39 (1985) 23.
S. W. RABIDEAU, J. Am. Chem. Soc., 75 (1952) 798.
S. W. RABIDEAU, J. Am. Chem. Soc., 79 (1952) 6350.
R. E. CONNICK, J. Am. Chem. Soc., 71 (1949) 1528.