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U.S. Department of Energy
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Research and development related to the Nevada nuclear waste storage investigations. Progress report, October 1-December 31, 1979

Technical Report ·
DOI:https://doi.org/10.2172/59113· OSTI ID:59113
Batch sorption measurements in air with Sr, Cs, Ba, Ce, and Eu were conducted with four additional tuff samples. Additional results for sorption of Pu and Am are presented. Results for sorption of Tc, Sr, Cs, Ba, Ce, Eu, and U(VI) are given and compared with results in air. Migration rate studies with crushed tuff are continuing, and, in some cases, uniform peakless elution is being observed. Methods for studying the migration rate of uranium (VI) are being developed. Nuclides are being infiltrated into various types of solid cores for study after sectioning. Microautoradiographic examination of crushed tuff samples used in the batch determinations indicate that large species of americium are sorbed. Methods for determination of iron(II) in both rocks and waters are described. The probability of disruption of a repository site at Yucca Mountain by future volcanic activity is bracketed by the range 10{sup -8} to 10{sup -10}/y. Partitioning functions for selected elements in plagioclase and olivine phenocrysts were examined for estimates of near-liquidus temperatures of representative melt compositions of the basalts of Crater Flat. Higher temperature estimates were calculated for glomeroperphyritic clots in the oldest basalts of Crater Flat.
Research Organization:
Los Alamos Scientific Lab., NM (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
59113
Report Number(s):
LA--8309-PR
Country of Publication:
United States
Language:
English