G. Giovannini, P. Sequi
Jun 1, 1976
Citations
0
Influential Citations
58
Citations
Journal
European Journal of Soil Science
Abstract
Summary Extraction of five soils with acetylacetone in benzene does not change their particle-size distribution, compared with no pre-treatment or dispersion, but it decreases the water stability of soil aggregates. The decrease is closely related to the extent of the extraction of iron and aluminium by acetylacetone in benzene from soils. The metals extracted by acetylacetone are essentially bound to the organic matter. It is suggested they behave as junctions of a net composed of polymeric chains of soil organic matter. The mesh, which exerts a protective action on soil aggregates, is weakened at the junctions of polymeric chains after the removal of metals so that the stability to the disrupting action of water is decreased.