| Mineral: |
Hematite |
| Reference: |
PDCF02 |
| SCM Type: |
CDM - (CD-)MUSIC
(C1: 1.7 F/m2, C2: 0.2 F/m2) |
| Ionic Strength: |
0.000373 mol/L of
NaCl
|
| Site Type: |
»Fe-singly |
| PZC: |
8.5 |
| pK1: |
8.8 |
pK1°I=0 (Conversion to I = 0): |
8.79 |
pK12.31 nm−2 (normalized): |
9.04 |
| pK2: |
|
pK2°I=0 (Conversion to I = 0): |
|
|
| Site Density in nm-2: |
4.0000 |
| Original Site Density: |
4.0 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
0.0 |
| pH Range: |
6-10 |
| Temperature in K: |
|
| Method for Site Density: |
Geometrical Calculation |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | ECOSAT |
| Comment: |
PZC evaluated by the zero change of pH consecutive to salt additions for a series of suspensions in the pH range; nitrogen atmosphere; total active site density = 8 sites/nm^2, was split equally between mono- and tri-coordinated groups, software ECOSAT using the Three-Plane-Model; Protolysis equations: Fe-singly: FeOH <0.5-> + H<1+> = FeOH2 <0.5+> Fe-triply: Fe3O <0.5-> + H<1+> = Fe3OH <0.5+> |
| |
| Mineral: |
Hematite |
| Reference: |
PDCF02 |
| SCM Type: |
CDM - (CD-)MUSIC
(C1: 1.7 F/m2, C2: 0.2 F/m2) |
| Ionic Strength: |
0.000373 mol/L of
NaCl
|
| Site Type: |
»Fe-triply |
| PZC: |
8.5 |
| pK1: |
8.2 |
pK1°I=0 (Conversion to I = 0): |
8.19 |
pK12.31 nm−2 (normalized): |
8.44 |
| pK2: |
|
pK2°I=0 (Conversion to I = 0): |
|
|
| Site Density in nm-2: |
4.0000 |
| Original Site Density: |
4.0 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
0.0 |
| pH Range: |
6-10 |
| Temperature in K: |
|
| Method for Site Density: |
Geometrical Calculation |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | ECOSAT |
| Comment: |
PZC evaluated by the zero change of pH consecutive to salt additions for a series of suspensions in the pH range; nitrogen atmosphere; total active site density = 8 sites/nm^2, was split equally between mono- and tri-coordinated groups, software ECOSAT using the Three-Plane-Model; Protolysis equations: Fe-singly: FeOH <0.5-> + H<1+> = FeOH2 <0.5+> Fe-triply: Fe3O <0.5-> + H<1+> = Fe3OH <0.5+> |
| |
