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Characteristics of radionuclide-contaminated soils from the Sedan crater area at the Nevada test site

Journal Article · · Soil Sci.; (United States)
OSTI ID:6082968
; ; ;
The distribution of radionuclides in selected soil profiles and the characteristics of contaminated ejecta in the Sedan crater area (site of a nuclear excavation test conducted in 19862) were investigated in an attempt to define the physicochemical parameters controlling the redistribution of radionuclides required to assess the environmental and health hazards of the contaminated area. The results showed that concentrations of /sup 239,240/Pu, /sup 241/Am, /sup 155/Eu, /sup 137/Cs, /sup 102m/Rh, /sup 90/Sr, and /sup 60/Co decreased with depth and with increasing distance from ground zero. The contaminated particles occurred as moderately porous calcium aluminosilicate glass, predominantly and size (2-0.1 mm in diameter), in the loamy sand or sandy loam soil. Differences in distribution patterns and concentration ratios among the radionuclides indicted a that a significant fraction of the /sup 137/Cs and /sup 90/Sr present in contaminated overburden materials had moved downward during the past 22 years, under arid environmental conditions, into the buried soil.
Research Organization:
Oak Ridge National Lab., TN
DOE Contract Number:
AC05-84OR21400
OSTI ID:
6082968
Journal Information:
Soil Sci.; (United States), Journal Name: Soil Sci.; (United States) Vol. 144:2; ISSN SOSCA
Country of Publication:
United States
Language:
English

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Related Subjects

510300* -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTIVITY LEVELS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METALS
ALPHA DECAY RADIOISOTOPES
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
AMERICIUM 241
AMERICIUM ISOTOPES
ARID LANDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CALCIUM
CESIUM 137
CESIUM ISOTOPES
CHEMISTRY
COBALT 60
COBALT ISOTOPES
CONTAMINATION
CRATERING EXPLOSIONS
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
ENVIRONMENTAL TRANSPORT
EUROPIUM 155
EUROPIUM ISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPLOSIONS
GLASS
HAZARDS
HEALTH HAZARDS
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LOAM
MASS TRANSFER
METALS
MINUTES LIVING RADIOISOTOPES
MONITORING
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OVERBURDEN
OXYGEN COMPOUNDS
PHYSICAL CHEMISTRY
PLOWSHARE PROJECT
PLUTONIUM 239
PLUTONIUM 240
PLUTONIUM ISOTOPES
RADIATION HAZARDS
RADIATION MONITORING
RADIOACTIVITY
RADIOISOTOPES
RADIONUCLIDE MIGRATION
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RHODIUM 102
RHODIUM ISOTOPES
SAND
SEDAN EVENT
SILICATES
SILICON COMPOUNDS
SOILS
SPATIAL DISTRIBUTION
STRONTIUM 90
STRONTIUM ISOTOPES
YEARS LIVING RADIOISOTOPES