Movement of manganese-54 in calcareous soils as affected by leaching solution, lime content, salinization, and sterilization
Movement of /sup 54/Mn was investigated in calcareous soil columns leached with 0.05 mol CaCl/sub 2/ L/sup -1/ followed by 0.03 mol EDTA L/sup -1/. Manganese was monitored along the soil columns using gamma spectrometry and measured in the effluent during the leaching course. Results indicated that the leaching with CaCl/sub 2/ for 45 d left 63, 32, and 10% of the applied Mn in the upper 0.5 cm of the silty clay, loam, and loamy sand soils, respectively, with no Mn detected below 5.0 cm. Conversely, leaching with EDTA for 4 d resulted in a nearly uniform distribution of Mn in the 20-cm soil columns. The various soil treatments caused a reduction in the retention capacity of the three soils for Mn with the maximum reduction occurring in the soils with partially depleted line. In most cases, leaching with CaCl/sub 2/ for 45 d produced no Mn in the column effluent except negligible amounts of Mn that were displaced from the sterilized and 50 g lime kg/sup -1/ columns. On the other hand, Mn emerged in the effluent immediately after EDTA application and continued until the end of the leaching course. The shape and the position of the breakthrough curves varied depending on the specific soil treatment.
- Research Organization:
- Nuclear Research Center, Baghdad (Iraq)
- OSTI ID:
- 6759814
- Report Number(s):
- CONF-881108-
- Journal Information:
- Soil Sci. Soc. Am. J.; (United States), Journal Name: Soil Sci. Soc. Am. J.; (United States) Vol. 51:6; ISSN SSSJD
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
ALKALINE EARTH METAL COMPOUNDS
AMINO ACIDS
BETA DECAY RADIOISOTOPES
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CARBOXYLIC ACIDS
CHELATING AGENTS
CHLORIDES
CHLORINE COMPOUNDS
DAYS LIVING RADIOISOTOPES
DISSOLUTION
EDTA
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
ENVIRONMENTAL TRANSPORT
GAMMA SPECTROSCOPY
HALIDES
HALOGEN COMPOUNDS
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
LEACHING
MANGANESE
MANGANESE 54
MANGANESE ISOTOPES
MASS TRANSFER
METALS
NUCLEI
ODD-ODD NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
RADIOISOTOPES
SEPARATION PROCESSES
SOILS
SPECTROSCOPY
TRACER TECHNIQUES
TRANSITION ELEMENTS