Effect of fulvic and humic acids and inorganic phase of soil on the sorption and extractability of /sup 239/Pu(IV)
The effect of organic (fulvic and humic acids) and inorganic fractions of soil on the sorption and extractability of /sup 239/Pu(IV) as a function of pH was determined by using an equilibrium batch technique. The results indicated that Pu(IV) is strongly sorbed on the inorganic fraction of the soil under soil pH conditions normally encountered in natural environments. Plutonium appeared to form stable complexes or chelates with fulvic and humic acids in the pH range studied (1.3 to 11.7). In mixtures of pure fulvic or humic acids with soil inorganic fractions, extractability of Pu was substantially influenced by organic-inorganic interaction. The influence of the inorganic fractions was most evident in the lower pH ranges, whereas that of the organic materials was most evident in the higher pH ranges, generally above pH 6. Some implications of the results on plutonium movement in soils were discussed.
- Research Organization:
- Univ. of California, Los Angeles
- OSTI ID:
- 5735043
- Journal Information:
- Soil Sci.; (United States), Journal Name: Soil Sci.; (United States) Vol. 128:5; ISSN SOSCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Terrestrial-- Radioactive Materials Monitoring & Transport-- Soil-- (-1987)
54 ENVIRONMENTAL SCIENCES
ACTINIDE COMPLEXES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CHELATES
CHEMICAL REACTIONS
COMPLEXES
ENVIRONMENTAL TRANSPORT
EVEN-ODD NUCLEI
EXTRACTION
FULVIC ACIDS
HEAVY NUCLEI
HUMIC ACIDS
INORGANIC COMPOUNDS
ISOTOPES
MASS TRANSFER
NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
PH VALUE
PLUTONIUM 239
PLUTONIUM COMPLEXES
PLUTONIUM ISOTOPES
RADIOISOTOPES
RADIONUCLIDE MIGRATION
SEPARATION PROCESSES
SOILS
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSURANIUM COMPLEXES
YEARS LIVING RADIOISOTOPES