ALUMINUM SOLUBILITY IN ORGANIC SOIL HORIZONS FROM NORTHERN AND SOUTHERN FORESTED WATERSHEDS

A study was conducted to determine the influence of organic matter on the solubility of Al in organic soil horizons from different geographic regions. Results showed that the equilibrium solubility of Al was dependent on solution pH and the degree to which the soil organic matter was saturated with Al. No differences were noted when the soils were compared on a regional basis, suggesting that prediction of aqueous Al concentrations in organic horizons and peaty hydrologic areas could be accomplished with a simple model. -from Authors