Solubility classification of airborne products from uranium ores and tailings piles. [Solubility parameters are based on airborne and seived ground dust samples]
Airborne products generated at uranium mills were assigned solubility classifications for use in the ICRP Task Group Lung Model. No significant difference was seen between the dissolution behavior of airborne samples and sieved ground samples of the same product. If the product contained radionuclides that dissolved at different rates, composite classifications were assigned to show the solubility class of each component. If the dissolution data indicated that a radionuclide was present in two chemical forms that dissolved at different rates, a mixed classification was assigned to show the percentage of radionuclide in each solubility class. Uranium-ore dust was assigned the composite classification: (/sup 235/U, /sup 238/U) W; (/sup 226/Ra) 10% D, 90% Y; (/sup 230/Th, /sup 210/Pb, /sup 210/Po) Y. Tailings-pile dust was classified: (/sup 226/Ra) 10% D, 90% Y; (/sup 230/Th, /sup 210/Pb, /sup 210/Po) Y. Uranium octoxide was classified Y, uranium tetrafluoride was also classified Y, ammonium diuranate was classified D, and yellow-cake dust was classified (/sup 235/U, /sup 238/U) 60% D, 40% W. The term yellow cake, however, covers a variety of materials which differ significantly in dissolution rate. Solubility classifications based on the dissolution half-times of particular yellow-cake products should, thus, be used when available. The D, W, and Y classifications refer to biological half-times for clearance from the human respiratory tract of 0 to 10 days, 11 to 100 days, and > 100 days, respectively.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (United States)
- DOE Contract Number:
- EY-76-C-06-1830
- OSTI ID:
- 6417974
- Report Number(s):
- NUREG/CR-0530; PNL-2870; TRN: 79-007620
- Country of Publication:
- United States
- Language:
- English
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38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMMONIUM URANATES
BIOLOGICAL HALF-LIFE
SOLUBILITY
LEAD 210
MILL TAILINGS
POLONIUM 210
RADIUM 226
RESPIRATORY SYSTEM
RADIONUCLIDE KINETICS
THORIUM 230
URANIUM 235
URANIUM 238
URANIUM ORES
URANIUM OXIDES
URANIUM OXIDES U3O8
URANIUM TETRAFLUORIDE
COMPILED DATA
DUSTS
ISOLATED VALUES
LUNG CLEARANCE
MAN
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
AMMONIUM COMPOUNDS
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHALCOGENIDES
CLEARANCE
DATA FORMS
DAYS LIVING RADIOISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXCRETION
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEAD ISOTOPES
MAMMALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ORES
OXIDES
OXYGEN COMPOUNDS
POLONIUM ISOTOPES
PRIMATES
RADIOISOTOPES
RADIUM ISOTOPES
SOLID WASTES
THORIUM ISOTOPES
URANATES
URANIUM COMPOUNDS
URANIUM FLUORIDES
URANIUM ISOTOPES
VERTEBRATES
WASTES
YEARS LIVING RADIOISOTOPES
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