Characterization of the sulfur retained by soils exposed to hydrogen sulfide
- North Dakota State Univ., Fargo (United States)
- Iowa State Univ., Ames (United States)
We recently reported studies showing that air-dry and moist soils have substantial capacities for sorption of hydrogen sulfide (H[sub 2]S) from air. Studies to characterize the S retained when air-dry and moist soils were exposed to air containing 2% H[sub 2]S showed that a large fraction (average 79%) of this S was in the form of elemental S (S[degrees]) and that very little (0.1% or less) was in the form of sulfide. The recovery of sorbed S as sulfate averaged 5.9% with the air-dry soils and 3.0% with the moist soils. The 42 soils used in this work were selected so that they differed markedly in physical and chemical properties. Statistical analyses of the relationships between these properties and the recovery of sorbed S as elemental S showed that this recovery was significantly correlated with the amount of soil Mn that was extractable by dithionite-citrite buffer. This suggests that Mn compounds in soils catalyze oxidation of sulfide-S to elemental-S when soils are exposed to air containing H[sub 2]S. 16 refs., 3 tabs.
- OSTI ID:
- 6078436
- Journal Information:
- Communications in Soil Science and Plant Analysis; (United States), Journal Name: Communications in Soil Science and Plant Analysis; (United States) Vol. 24:1-2; ISSN CSOSA2; ISSN 0010-3624
- 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.
AIR POLLUTION
CHALCOGENIDES
CHEMICAL REACTIONS
ECOLOGICAL CONCENTRATION
ELEMENTS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
NONMETALS
OXIDATION
POLLUTION
SOILS
SORPTION
SULFIDES
SULFUR
SULFUR COMPOUNDS