Factors influencing the chemical extractability of /sup 241/Am from a contaminated soil

Conference · Wed Dec 31 23:00:00 EST 1975

OSTI ID:7309737

Nishita, H; Hamilton, M

Factors influencing the extractability of /sup 241/Am from an artificially contaminated soil were investigated. This was done with an equilibrium batch technique using CH/sub 3/COOH-NH/sub 4/OH and HNO/sub 3/-NaOH extracting systems. The influence of several soil components was determined indirectly by selectively removing them from the soil. The effect of water- and HCl-soluble salts and organic matter on /sup 241/Am extractability was small. The most marked effect was due to the soil organic fraction that was not water- or HCl-soluble. This organic fraction was influential under both low and high pH conditions, but its influence was particularly marked under low pH conditions. The free iron-oxides had an appreciable effect under low pH conditions, but no observable effect in the high pH range. Though to a lesser extent, the free silica and alumina, amorphous alumino-silicate, and possibly residual organic matter also showed some influence. These results provide some implications on the conditions that influence the movement of /sup 241/Am in soils and its availability to plants. A review of the literature on the behavior of Am in soils is included.

• Research Organization: California Univ., Los Angeles (USA). Lab. of Nuclear Medicine and Radiation Biology
• OSTI ID: 7309737
• Report Number(s): UCLA-12-1109; CONF-761065-4
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
510301* -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Soil-- (-1987)
54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
CHALCOGENIDES
CONTAMINATION
ENVIRONMENTAL TRANSPORT
EXTRACTION
HEAVY NUCLEI
ISOTOPES
MASS TRANSFER
MINERALS
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PH VALUE
RADIOISOTOPES
RADIONUCLIDE MIGRATION
SEPARATION PROCESSES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SOILS
SOLVENT EXTRACTION
YEARS LIVING RADIOISOTOPES