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Zn adsorption by variable charge soils in relation to pH


Pedosphere 3(1): 23-33
Zn adsorption by variable charge soils in relation to pH
The relationship between Zn adsorption and pH in soil was studied, and possible adsorption mechanisms are discussed. At low pH values, where Zn adsorbed did not exceed 50% of Zn applied, specific adsorption was the dominant mechanism, free Zn2+ ion being the species of Zn specifically adsorbed. At intermediate and high pH values, specific and electrostatic adsorption coexisted, at about 70 and 30%, respectively.

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Accession: 002549190



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