| Mineral: |
Goethite |
| Reference: |
GGSC98 |
| SCM Type: |
CC - Constant Capacitance
(C1: 1.75 F/m2) |
| Ionic Strength: |
0.0 mol/L of
NaNO3
|
| Site Type: |
»Fe-OH |
| PZC: |
8.9 |
| pK1: |
7.33 |
pK1°I=0 (Conversion to I = 0): |
7.33 |
pK12.31 nm−2 (normalized): |
7.33 |
| pK2: |
9.88 |
pK2°I=0 (Conversion to I = 0): |
9.88 |
pK22.31 nm−2 (normalized): |
9.88 |
| Site Density in nm-2: |
2.3172 |
| Original Site Density: |
0.000254 mol / L solution
|
| Solid/Liquid Ratio in g/L: |
0.82 |
| pH Range: |
|
| Temperature in K: |
|
| Method for Site Density: |
Literature |
| Method for Protolysis: |
| Fit Method: | GRFIT |
| Comment: |
pK obtained by adjusting data of [VRL94] with a CCM (SSA 45 m^2/g!), and mass related site concentration 0.173 mmol/g (equivalent to SSD 2.31 sites/nm^2 [DK90]) (45m^2/g); here: 2.54E-4 mol/L = 0.31 mmol/g = 2.31 sites/nm^2 (0.82 g/L; SSA=80.5 m^2/g) |
| |
