Distribution coefficients for radionuclides in aquatic environments. II. Studies on marine and freshwater sediments systems including the radionuclides 106-Ru, 137-Cs, and 241-Am. Annual report, August 1977-July 1978

Technical Report · Mon Oct 01 04:00:00 EDT 1979

OSTI ID:6011008

Schell, W R; Sibley, T H; Nevissi, A; Sanchez, A

The objective of this study was to obtain information that can be used to predict the fate of radionuclides that may enter the aquatic environment from nuclear power plants or fuel reprocessing plants. Constant shaking experiments were used to determine distribution coefficients for pure clay and natural sediments. Dialysis experiments were used to study the distribution of radionuclides among suspended sediments, phytoplankton, organic detritus, and filtered seawater. The value of distribution coefficients varies considerably from one environment to another and for different experimental conditions such as pH. These differences probably result from the presence of different physico-chemical states of the radionuclides. Studies on the uptake of radionuclides and phytoplankton indicated that the time required to reach equilibrium may be longer, greater than 100 hours, than previously assumed. Some radionuclides (e.g., /sup 241/Am) have an especially high affinity for organic detritus.

• Research Organization: Washington Univ., Seattle (USA). Coll. of Fisheries
• OSTI ID: 6011008
• Report Number(s): NUREG/CR-0802
• Country of Publication: United States
• Language: English

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54 ENVIRONMENTAL SCIENCES
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63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL ISOTOPES
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
AQUATIC ECOSYSTEMS
AQUATIC ORGANISMS
BENCH-SCALE EXPERIMENTS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BISMUTH 204
BISMUTH ISOTOPES
CESIUM 137
CESIUM ISOTOPES
COBALT 60
COBALT ISOTOPES
DATA
DATA FORMS
DAYS LIVING RADIOISOTOPES
DETRITUS
ECOLOGICAL CONCENTRATION
ECOSYSTEMS
ELECTRON CAPTURE RADIOISOTOPES
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FRESH WATER
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
HYDROGEN COMPOUNDS
INFORMATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IRON 59
IRON ISOTOPES
ISOLATED VALUES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MASS TRANSFER
MINUTES LIVING RADIOISOTOPES
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
PHYTOPLANKTON
PLANKTON
PLUTONIUM 238
PLUTONIUM ISOTOPES
RADIOECOLOGICAL CONCENTRATION
RADIOISOTOPES
RADIONUCLIDE KINETICS
RADIONUCLIDE MIGRATION
RUTHENIUM 106
RUTHENIUM ISOTOPES
SEAWATER
SEDIMENTS
UPTAKE
WATER
YEARS LIVING RADIOISOTOPES
ZINC 65
ZINC ISOTOPES