Mineral: |
Goethite |
Reference: |
S79 |
SCM Type: |
CC - Constant Capacitance
(C1: 1.8 F/m2) |
Ionic Strength: |
0.1 mol/L of
NaClO4
|
Site Type: |
»Fe-OH |
PZC: |
6.9 |
pK1: |
5.95 |
pK1°I=0 (Conversion to I = 0): |
5.84 |
pK12.31 nm−2 (normalized): |
6.20 |
pK2: |
8.15 |
pK2°I=0 (Conversion to I = 0): |
8.04 |
pK22.31 nm−2 (normalized): |
7.90 |
Site Density in nm-2: |
4.1531 |
Original Site Density: |
0.0002 mol / g solid
|
Solid/Liquid Ratio in g/L: |
4.6 |
pH Range: |
4-10 |
Temperature in K: |
295.15 |
Method for Site Density: |
Potentiometric Titration |
Method for Protolysis: | Potentiometric Titration |
Fit Method: | FITEQL |
Comment: |
SSD det. with backtitration method, PZC: direct determination at zero point of titration curve, PZC from 1/2(pK1+pK2)=7.25 |
|