Influence of soil chemical properties on the inactivation of applied chromium
Chromium, as CrCl/sub 3/, was applied in increasing amounts of 0-400 ppm to four soils developed from similar parent material but differing in clay, organic matter, manganese, and iron contents as the result of differing drainage and vegetative conditions. Extractable Cr, Mn and Fe were examined using deionized water, 1 N NH/sub 4/OAc, 0.005 M DTPA, and 0.1 N HCl as extracting agents. pH was monitored and plant growth and metal uptake data taken to correlate with the various extraction results. Essentially no H/sub 2/O extractable Cr was present, even where 400 ppm Cr had been applied. A linear relationship existed between Cr treatment level and NH/sub 4/OAc extractable Cr, ranging from 1 to 2% of that applied, depending on the soil type. DTPA extractable Cr was very low with the maximum amount extracted occurring at low treatment levels. The percentage of applied Cr that was 0.1 N HCl extractable decreased with increasing treatment levels and was less than 25% of that applied at the 400 ppm Cr level. With increasing Cr treatment levels, extractable Mn increased while extractable Fe and pH decreased. 100 ppm Cr caused significant growth reduction on all crops studied, even where the organic matter content of the soil was 9%.
- Research Organization:
- Univ. of Florida, Gainesville
- OSTI ID:
- 6432031
- Journal Information:
- Agron. Abstr.; (United States), Vol. 67
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CHROMIUM
SOIL CHEMISTRY
ENVIRONMENTAL EFFECTS
BIOLOGICAL EFFECTS
CHROMIUM CHLORIDES
INHIBITION
IRON
MANGANESE
ORGANIC MATTER
PLANT GROWTH
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM COMPOUNDS
ELEMENTS
GROWTH
HALIDES
HALOGEN COMPOUNDS
METALS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
510200* - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)
560303 - Chemicals Metabolism & Toxicology- Plants- (-1987)