| Mineral: |
Goethite |
| Reference: |
PPSG06 |
| SCM Type: |
CC - Constant Capacitance
(C1: 0.75 F/m2) |
| Ionic Strength: |
0.0 mol/L of
NaNO3
|
| Site Type: |
»Fe-OH |
| PZC: |
|
| pK1: |
7.3 |
pK1°I=0 (Conversion to I = 0): |
7.30 |
pK12.31 nm−2 (normalized): |
7.11 |
| pK2: |
8.9 |
pK2°I=0 (Conversion to I = 0): |
8.90 |
pK22.31 nm−2 (normalized): |
9.09 |
| Site Density in nm-2: |
1.5055 |
| Original Site Density: |
2.5 µmol / m² surface
|
| Solid/Liquid Ratio in g/L: |
6.6 |
| pH Range: |
6 - 10 |
| Temperature in K: |
298.15 |
| Method for Site Density: |
Batch Sorption Experiments |
| Method for Protolysis: | Literature |
| Fit Method: | MINTEQA2 |
| Comment: |
maximal Ge surface adsorption density determined in this study allowed to fix the total amount of surface sites available for Ge adsorption as 2.50 ± 0.10 µmol/m²; pK values fixed to be same as for hydrous ferric oxide [DM90] |
| |
