Role of positive charge in the competitive effect of phosphate on sulfate sorption by an allophanic soil
- 1 January 1988
- journal article
- research article
- Published by CSIRO Publishing in Soil Research
- Vol. 26 (1) , 171-175
- https://doi.org/10.1071/sr9880171
Abstract
The effect of phosphate (P) on the sorption of sulfate (S) by an allophanic soil with high surface positive charge was investigated in the pH range of 5.3-7.0 obtained by incubation with Ca(OH)2. The effect of P on S sorption was directly related to the effect of P on surface positive charge. At low soil pH, P reduced surface positive charge to a larger extent than at high pH and this was associated with a larger effect of P on S sorption.Keywords
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