Chemical speciation of radionuclides migrating in groundwaters [electronic resource].

Published:: Rockville, Md. : U.S. Nuclear Regulatory Commission, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 27 pages : digital, PDF file
Additional Creators:: Pacific Northwest Laboratory
U.S. Nuclear Regulatory Commission
United States. Department of Energy. Office of Scientific and Technical Information
Access Online:: www.osti.gov

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Summary:

In order to more accurately predict the rates and mechanisms of radionuclide migration from low-level waste disposal facilities via groundwater transport, ongoing studies are being conducted at field sites at Chalk River Laboratories to identify and characterize the chemical speciation of mobile, long-lived radionuclides migrating in groundwaters. Large-volume water sampling techniques are being utilized to separate and concentrate radionuclides into particular, cationic, anionic, and nonionic chemical forms. Most radionuclides are migrating as soluble, anionic species that appear to be predominantly organoradionuclide complexes. Laboratory studies utilizing anion exchange chromatography have separated several anionically complexed radionuclides, e.g., ⁶°Co and ¹°⁶Ru, into a number of specific compounds or groups of compounds. Further identification of the anionic organoradionuclide complexes is planned utilizing high resolution mass spectrometry. Large-volume ultra-filtration experiments are characterizing the particulate forms of radionuclides being transported in these groundwaters.

Subject(s):

Environmental Sciences

Note:

Published through SciTech Connect.
04/01/1994.
"pnl-sa--23148"
" conf-940401--16"
"DE94015210"
International conference on methods and applications of radioanalytical chemistry,Kona, HI (United States),10-16 Apr 1994.
Cooper, E.; Thomas, C.; Robertson, D.; Lepel, E.; Schilk, A.; Pratt, S.; Abel, K.; Killey, R.; Hartwig, P.

Funding Information:

AC06-76RL01830

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