Preferred Label : relative adsorption;
IUPAC definition : If Γ i σ and Γ 1 σ are the Gibbs surface concentrations of components i i /i and
1, respectively, with reference to the same, but arbitrarily chosen, Gibbs surface,
then the relative adsorption of component i i /i with respect to component 1, is
defined as \[\mathit{γ}_{i} {\left(1\right)} \mathit{γ}_{i} {σ}- \mathit{γ}_{1}
{σ}\ \frac{c_{i} {\alpha}- c_{i} {\beta}}{c_{1} {\alpha}- c_{1} {\beta}}\] and is
invariant to the location of the Gibbs surface. Alternatively, Γ i 1 may be regarded
as the Gibbs surface concentration of i when the Gibbs surface is chosen so that Γ
i σ is zero, i.e. the Gibbs surface is chosen so that the reference system contains
the same amount of component 1 as the real system. Hence Γ 1 1 0.;
Origin ID : R05257;
See also
If Γ i σ and Γ 1 σ are the Gibbs surface concentrations of components i i /i and
1, respectively, with reference to the same, but arbitrarily chosen, Gibbs surface,
then the relative adsorption of component i i /i with respect to component 1, is
defined as \[\mathit{γ}_{i} {\left(1\right)} \mathit{γ}_{i} {σ}- \mathit{γ}_{1}
{σ}\ \frac{c_{i} {\alpha}- c_{i} {\beta}}{c_{1} {\alpha}- c_{1} {\beta}}\] and is
invariant to the location of the Gibbs surface. Alternatively, Γ i 1 may be regarded
as the Gibbs surface concentration of i when the Gibbs surface is chosen so that Γ
i σ is zero, i.e. the Gibbs surface is chosen so that the reference system contains
the same amount of component 1 as the real system. Hence Γ 1 1 0.
