Arsenite sorption and desorption in soils
A linear form of the Freundlich isotherm was used to describe arsenite (As(III)) sorption by the A and B horizons of five West Virginia soils. Arsenite sorption conformed to the Freundlich isotherm over the entire concentration range for all the soils. Simple correlation coefficients and multiple regression equations were used to relate soil properties to parameters of the Freundlich equation. Iron oxide percentage and pH were the soil properties most closely related to parameters of As(III) sorption. The rate of As(III) sorption by the A and B horizons of an Upshur soil was rapid initially and decreased with time. A modified form of the Freundlich equation was used to explain the As(III) sorption rate data. Arsenite sorption was not reversible. The modified Freundlich equation was also to describe As(III) desorption rate. Simple and multiple regression calculation indicated that iron oxides and pH were correlated with the rate of As(III) desorption by the investigated soils.
- Research Organization:
- Dept. of Agriculture, Beckley, WV
- OSTI ID:
- 6294087
- Journal Information:
- Soil Sci. Soc. Am. J.; (United States), Vol. 48:5; Conference: 48. annual meeting, Soil Science Society of America, Las Vegas, NV, USA, 25-30 Nov 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ARSENIC
DESORPTION
SORPTION
MATHEMATICAL MODELS
CORRELATIONS
IRON OXIDES
PH VALUE
SOIL CHEMISTRY
SOILS
CHALCOGENIDES
CHEMISTRY
ELEMENTS
IRON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SEMIMETALS
TRANSITION ELEMENT COMPOUNDS
510200* - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)