Plutonium Speciation, Solubilization and Migration in Soils

Neu, Mary P. ; Haire, Richard G.

Los Alamos National Laboratory

关键词: Public Lands;    Radioisotopes;    Decontamination;    Transport;    37 Inorganic, Organic, Physical And Analytical Chemistry;   

DOI  :  10.2172/834600
RP-ID  :  EMSP-73819-2002
RP-ID  :  834600

美国|英语

来源: UNT Digital Library

【 摘 要 】

The DOE is currently conducting cleanup activities at its nuclear weapons development sites, many of which have accumulated plutonium in soils for 50 years. To properly control Pu migration in soils within Federal sites and onto public lands, better evaluate the public risk, and design effective remediation strategies, a fundamental understanding of Pu speciation and environmental transport is needed. The key scientific goals of this project are: to determine Pu concentrations and speciation at contaminated DOE sites; to study the formation, stability, and structural and spectroscopic features of environmentally relevant Pu species; to determine the mechanism(s) of interaction between Pu and Mn/Fe minerals and the potential release of Pu via redox cycling; and to model the environmental behavior of plutonium. Our goal is to use characterization, thermodynamic, mineral interaction, and mobility data to develop better models of radionuclide transport and risk assessment, and to enable the development of science-based decontamination strategies.