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Decay-Series Disequilibrium Study of In Situ Long-Term Radionuclide Transport in Water-Rock Systems

Published online by Cambridge University Press:  10 February 2011

Shangde. Luo ,
Teh-Lung Ku ,
Robert Roback ,
Micheal Murrell  and
Travis L. McLing
Shangde. Luo
Affiliation:
Dept. of Earth Sciences, Univ. of Southern California, Los Angeles, CA 90089-0740, sluo@usc.edu
Teh-Lung Ku
Affiliation:
Dept. of Earth Sciences, Univ. of Southern California, Los Angeles, CA 90089-0740
Robert Roback
Affiliation:
SMSJ 514, Los Alamos National Laboratory, Los Alamos, NM 87545
Micheal Murrell
Affiliation:
SMSJ 514, Los Alamos National Laboratory, Los Alamos, NM 87545
Travis L. McLing
Affiliation:
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID 83415-2107
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Abstract

Uranium and thorium-series disequilibrium in nature permits the determination of many in-situ physico-chemical, geologic and hydrologic variables that control the long-term migration of radionuclides in geologic systems. It also provides site-specific, natural analog information valuable to the assessment of geologic disposal of nuclear wastes. In this study, a model that relates the decay-series radioisotope distributions among solution, sorbed and solid phases in water-rock systems to processes of water transport, sorption-desorption, dissolution-precipitation, radioactive ingrowth-decay, and α recoil is discussed and applied to a basaltic aquifer at the Idaho National Engineering and Environmental Laboratory (INEEL), Idaho.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 608: Symposium QQ – Scientific Basis for Nuclear Waste Management XXIII , 1999 , 217
Copyright
Copyright © Materials Research Society 2000

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References

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