Sulfate adsorption relationships in forested spodosols of the northeastern USA

Conference · · Soil Sci. Soc. Am. J.; (United States)

OSTI ID:6115627

Fuller, R D; David, M B; Driscoll, C T

Soil SO4S adsorption has important implications in the study of acidic deposition effects on terrestrial and aquatic systems, because this process results in the release of alkalinity or prevents leaching of H and cations. Forested Spodosols of the northeastern USA have generally been considered poor adsorbers of SO4S , in part due to interfering effects of soil organic matter. Soils from both the Adirondack Mountains, NY and the Hubbard Brook Experimental Forest, NH (Typic and Lithic Haplorthods and Aquic Fragiorthods, respectively), however, contained SO4S in Bs horizons predominately in an insoluble (nonwater-extractable) form and were capable of adsorbing additional SO4S given higher SO4S concentrations than currently found in situ. Concentrations of insoluble SO4S in Bs horizons ranged from 0.3 to 2.1 x 10 T mol SO4S Kg by H2PO4 extraction. Fractionation of free Fe and Al suggest that both elements were present largely in organically complexed forms. Insoluble SO4S was highly correlated with several forms of free Fe and Al, but crystalline Fe and organic Al content appeared to explain most of the variability in SO4S adsorption capability. Soil SO4S adsorption capability indicates that the adsorption process may well buffer seasonal variations in SO4S concentration or serve as a net source or sink of SO4S subsequent to conditions which either influence concentrations of SO4S in the soil solution (eg. atmospheric inputs) or affect the adsorbent phase.

• Research Organization: Syracuse Univ., NY
• OSTI ID: 6115627
• Journal Information: Soil Sci. Soc. Am. J.; (United States), Vol. 49:4; Conference: 48. annual meeting, Soil Science Society of America, Chicago, IL, USA, 1-6 Dec 1985
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
SULFATES
ADSORPTION
ACID RAIN
ADIRONDACK MOUNTAINS
ALUMINIUM
CORRELATIONS
FEDERAL REGION I
FORESTS
HYDROGEN IONS 1 PLUS
INHIBITION
IRON
LEACHING
NEW HAMPSHIRE
NEW YORK
ORGANIC MATTER
SEASONAL VARIATIONS
SOILS
TERRESTRIAL ECOSYSTEMS
APPALACHIAN MOUNTAINS
ATMOSPHERIC PRECIPITATIONS
CATIONS
CHARGED PARTICLES
DISSOLUTION
ECOSYSTEMS
ELEMENTS
FEDERAL REGION II
HYDROGEN IONS
IONS
METALS
MOUNTAINS
NORTH AMERICA
OXYGEN COMPOUNDS
RAIN
SEPARATION PROCESSES
SORPTION
SULFUR COMPOUNDS
TRANSITION ELEMENTS
USA
VARIATIONS
510200* - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)