Abstract
IT is generally accepted that the mobility of phosphate in soil systems is largely governed by sorption-desorption reactions1,2, but the mechanisms involved in these reactions have remained largely obscure. Studies3–5 have shown that sorption of phosphate by soils can be described by at least two Langmuir equations over a solution phosphate concentration range of up to approximately 8 × 102 µmol 1−1.Interpretation of these data has been complicated by the lack of an equilibrium condition, implicit in the Langmuir equation, and by the limited number of data points on the sorption isotherms. An alternative approach described here provides a reliable basis for the development of the sorption mechanisms.
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RYDEN, J., SYERS, J. Charge relationships of phosphate sorption. Nature 255, 51–53 (1975). https://doi.org/10.1038/255051a0
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DOI: https://doi.org/10.1038/255051a0
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