On the reversibility of phosphate sorption by soils

摘要: Summary Sorption of phosphate was induced by incubating with samples two soils. Both desorption and further sorption were then measured on separate subsamples the incubated The effects varying amount soil period desorption, or sorption, one soil; effect incubation other. Plots desorbed versus concentration continuous plots newly sorbed concentration. Neither these coincided original additions phosphate. These results compatible a model for reaction between in which is initially adsorbed subsequently diffuses beneath adsorbing surfaces. Sorption reversible sense that curve obtained when are opposite directions increasing, decreasing, solution However, because dynamic processes involved, an earlier position plot against not retraced changed.