Sorbents, common specific surface

Distributed Reactivity. Natural systems commonly are composed ol a variety of different solid phases and interfaces, each of which might well yield distinctly individual local sorption behavior with respect to a particula] solute and thus an identifiable local isotherm. Figure 3 is a schematic illustration of four different types of local sorption phenomena, ranging from a specific adsorption reaction of a solute molecule with a sorbent surface on the left to the absorption of the molecule into the matrix of a sorbing substance on the right. 

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