Preferred Label : surface excess isotherm;
IUPAC definition : The function relating, at constant temperature and pressure, Γ i n, Γ i l or Γ i v,
or the respective specific quantities n l Δ x i l m, As.Γil/m or V l Δ c i l m to
the mole fraction (or concentration) of component i in the equilibrium liquid phase.
With solutions of more than two components such isotherms are unequivocal functions
only when the ratios of the mole fractions (or concentrations) of all other components
except i are kept constant. (As is the area of interface, Γ i n, Γ i l, Γ i v are
relative adsorptions, Δ x i l is the change in mole fraction of i resulting from bringing
a specified mass m of solid into contact with a specified amount of solution n l,
Δ c i l is the change in concentration resulting from bringing a specified mass of
solid into contact with a specified amount of solution of volume V l.);
Origin ID : S06178;
See also
The function relating, at constant temperature and pressure, Γ i n, Γ i l or Γ i v,
or the respective specific quantities n l Δ x i l m, As.Γil/m or V l Δ c i l m to
the mole fraction (or concentration) of component i in the equilibrium liquid phase.
With solutions of more than two components such isotherms are unequivocal functions
only when the ratios of the mole fractions (or concentrations) of all other components
except i are kept constant. (As is the area of interface, Γ i n, Γ i l, Γ i v are
relative adsorptions, Δ x i l is the change in mole fraction of i resulting from bringing
a specified mass m of solid into contact with a specified amount of solution n l,
Δ c i l is the change in concentration resulting from bringing a specified mass of
solid into contact with a specified amount of solution of volume V l.)
