Sorption of pollutant gases by soils. Progress report, December 1, 1976--November 30, 1977
Studies of factors affecting sorption of nitrous oxide by soils showed that nitrate inhibits reduction of N/sub 2/O to N/sub 2/ by soil microorganisms and that the inhibitory effect of nitrate on N/sub 2/O reduction increases markedly with decrease in soil pH. Emission of nitrous oxide was observed during incubation of soils under aerobic conditions. Research to account for this observation showed that N/sub 2/O is produced during nitrification of ammonium in well-aerated soils and indicated that N/sub 2/O production during nitrification of fertilizer nitrogen in soils may be significant in regard to the potential threat of fertilizer-derived N/sub 2/O to the ozone layer. A gas chromatographic procedure was developed for determination of N/sub 2/O in air. It is rapid, sensitive, specific and precise, and it permits use of the xenon in air as an internal standard. Techniques were developed for research on sorption of NO and NO/sub 2/ by soils, and studies of factors affecting NO/sub 2/ sorption by soils were initiated. The capacity of diverse soils for sorption of SO/sub 2/ was found to be very significantly correlated with their surface area, CaCO/sub 3/ equivalent and acid-titratable basicity. Their capacity for sorption of H/sub 2/S was found to be very significantly correlated with their clay and extractable Mn contents.
- Research Organization:
- Iowa State Univ. of Science and Technology, Ames (USA)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 5433669
- Report Number(s):
- COO-2530-11
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
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63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AEROSOL MONITORING
AEROSOLS
AIR POLLUTION
ALKALINE EARTH METAL COMPOUNDS
BIODEGRADATION
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHEMISTRY
CHROMATOGRAPHY
CLAYS
COLLOIDS
DECOMPOSITION
DISPERSIONS
ELEMENTS
ENVIRONMENTAL IMPACTS
FERTILIZERS
GAS CHROMATOGRAPHY
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MANGANESE
METABOLISM
METALS
MICROORGANISMS
MINERALS
MONITORING
NITRATES
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NITROUS OXIDE
OXIDES
OXYGEN COMPOUNDS
PH VALUE
POLLUTION
SEPARATION PROCESSES
SOIL CHEMISTRY
SOILS
SOLS
SORPTIVE PROPERTIES
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENTS