Effect of soil type on the extractability of /sup 237/Np, /sup 239/Pu, /sup 241/Am, and /sup 244/Cm as a function of pH
Using an equilibrium batch technique, we determined the extractability of /sup 237/Np, /sup 239/Pu, /sup 241/Am, and /sup 244/Cm from widely different kinds of soils as a function of pH. Hydrochloric acid or NaOH was used to adjust the pH. The sorption and extractability of the transuranics studied varied considerably with pH and the kind of soil. A general pattern of extractability, common to all the transuranics studied, was exhibited to a varying degree by each mineral soil, except the calcareous soil. Typically, the extractability was relatively high under strongly acidic conditions, particularly below pH 2. Then, as the pH increased, there was a zone of rapid decrease, which was followed by a peak with increasing pH and then a decline. The organic soil used differed from this general pattern in that it showed a progressive increase of extractability in the alkaline pH range instead of peaking and declining.
- Research Organization:
- Univ. of California, Los Angeles
- OSTI ID:
- 6060034
- Journal Information:
- Soil Sci.; (United States), Journal Name: Soil Sci.; (United States) Vol. 132:1; ISSN SOSCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Plant uptake of /sup 237/Np, /sup 239/ /sup 240/Pu, /sup 241/Am, and /sup 244/Cm from soils representing major food production areas of the United States
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
510301* -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Soil-- (-1987)
54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ALUMINIUM COMPOUNDS
ALUMINIUM HYDROXIDES
AMERICIUM 241
AMERICIUM ISOTOPES
CURIUM 244
CURIUM ISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXTRACTION
HEAVY NUCLEI
HYDROGEN COMPOUNDS
HYDROXIDES
IRON COMPOUNDS
IRON HYDROXIDES
ISOTOPES
MANGANESE COMPOUNDS
MANGANESE HYDROXIDES
NEPTUNIUM 237
NEPTUNIUM ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PH VALUE
PLUTONIUM 239
PLUTONIUM ISOTOPES
RADIOISOTOPES
SEPARATION PROCESSES
SOILS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YEARS LIVING RADIOISOTOPES