Interfering substance###potentiometric selectivity coefficient
2+] (Ca [right arrow] Mg) through the respective Kerr selectivity coefficients
in activities (Table 1).
The results for DRUGS must be viewed in light of the fact that three of the four selectivity coefficients
for MTD relative to analogues substances are defined as:
The selectivity coefficient
describing the binding affinity between [K.
gt] are known, the natural logarithm of the selectivity coefficient
Table-1: Potentiometric selectivity coefficients
calculated with separate solution method (SSM) in both batch and the FIP mode.
By applying the Gaines-Thomas selectivity coefficient
to the N[O.
It was noticed that selectivity coefficient
for Cd2+-Pb 2+, Pb2+- Cu2+and Zn2+-Fe2+ pair is zero, as there is no overlapping in respective peaks in voltammogram (Fig 3, 4).
V,i] is the individual Vanselow selectivity coefficient
of sites i, and KAR (potassium adsorption ratio) is the activity ratio ([K.
Suarez and Wood (1993) developed a mixing model which is able to approximate the nonconstant values of the soil selectivity coefficient
by taking into account the organic matter content of the soil and using the published constant selectivity values for clay and organic matter.
Total concentrations of the considered ions in solution (determined in the first leachate of the column experiments described above), pH values, CEC, and cation exchange selectivity coefficients
were used as initial values in the model.