Sulfate adsorption in Michigan forest soils

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5654965

MacDonald, N W

The occurrence of acidic atmospheric deposition raised concerns over adverse cation leaching effects on Michigan forest soils with low cation exchange capacities. Leaching effects of acid deposition depend on mobility of sulfate in the soil. Little was known, however, concerning the ability of these soils to adsorb sulfate. The objectives of this study were to determine the ability of representative Michigan forest soils to adsorb sulfate, to relate sulfate adsorption to soil properties, and to develop equations to predict sulfate adsorption in similar forest soils. Frigid zone soil series studied were Grayling (Typic Udipsamments), Rubicon (Entic Haplorthods), Kalkaska (Typic Haplorthods), and Montcalm (Eutric Glossoboralfs). Mesic zone series studied were Spinks (Psammentic Hapludals) and Oshtemo (Typic Hapludalfs). Six randomly located pedons of each series were sampled. Sulfate adsorption was determined by shaking 10 gram soil samples for 24 hours in 50 mL 0.01 M CaCl/sub 2/ solution containing 10 mg SO/sub 4/-S L/sup -1/. Solution filtrates were turbidimetrically analyzed for SO/sub 4/-S and adsorption was calculated from reduction in SO/sub 4/-S concentration. Bw, Bs, and Bh horizons of frigid zone soils and E and Bt horizons of mesic zone soils had the highest sulfate adsorbing abilities. No significant differences were found between series in total sulfate adsorptive capacity.

• Research Organization: Michigan State Univ., East Lansing (USA)
• OSTI ID: 5654965
• Country of Publication: United States
• Language: English

Related Subjects

510100* -- Environment
Terrestrial-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
CHEMISTRY
DATA
EQUATIONS
EXPERIMENTAL DATA
FEDERAL REGION V
INFORMATION
MICHIGAN
NORTH AMERICA
NUMERICAL DATA
OXYGEN COMPOUNDS
PREDICTION EQUATIONS
SOIL CHEMISTRY
SOILS
SORPTION
SORPTIVE PROPERTIES
SULFATES
SULFUR COMPOUNDS
SURFACE PROPERTIES
USA