| Mineral: |
Hematite |
| Reference: |
RGKB98a |
| SCM Type: |
CC - Constant Capacitance
(C1: 2.24 F/m2) |
| Ionic Strength: |
0.1 mol/L of
NaClO4
|
| Site Type: |
»Fe(s)-OH |
| PZC: |
6.0 |
| pK1: |
4.8 |
pK1°I=0 (Conversion to I = 0): |
4.69 |
pK12.31 nm−2 (normalized): |
|
| pK2: |
7.49 |
pK2°I=0 (Conversion to I = 0): |
7.38 |
pK22.31 nm−2 (normalized): |
|
| Site Density in nm-2: |
0.0000 |
| Original Site Density: |
0.0 |
| Solid/Liquid Ratio in g/L: |
|
| pH Range: |
|
| Temperature in K: |
|
| Method for Site Density: |
Potentiometric Titration |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | FITEQL |
| Comment: |
pH<=6, also values for 0.01 M and 0.001 M given (but with a poorer fit), citation in [RGKB98b]: SSD(total) = 6.95+-0.14*10^-6 mol/g |
| |
| Mineral: |
Hematite |
| Reference: |
RGKB98a |
| SCM Type: |
CC - Constant Capacitance
(C1: 2.24 F/m2) |
| Ionic Strength: |
0.1 mol/L of
NaClO4
|
| Site Type: |
»Fe-OH |
| PZC: |
6.0 |
| pK1: |
4.8 |
pK1°I=0 (Conversion to I = 0): |
4.69 |
pK12.31 nm−2 (normalized): |
4.46 |
| pK2: |
7.49 |
pK2°I=0 (Conversion to I = 0): |
7.38 |
pK22.31 nm−2 (normalized): |
7.83 |
| Site Density in nm-2: |
1.0539 |
| Original Site Density: |
0.000007 mol / g solid
|
| Solid/Liquid Ratio in g/L: |
|
| pH Range: |
|
| Temperature in K: |
|
| Method for Site Density: |
Potentiometric Titration |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | FITEQL |
| Comment: |
pH<=6, also values for 0.01 M and 0.001 M given (but with a poorer fit), citation in [RGKB98b]: SSD(total) = 6.95+-0.14*10^-6 mol/g |
| |
| Mineral: |
Hematite |
| Reference: |
RGKB98a |
| SCM Type: |
CC - Constant Capacitance
(C1: 2.24 F/m2) |
| Ionic Strength: |
0.1 mol/L of
NaClO4
|
| Site Type: |
»Fe(w)-OH |
| PZC: |
6.0 |
| pK1: |
4.8 |
pK1°I=0 (Conversion to I = 0): |
4.69 |
pK12.31 nm−2 (normalized): |
4.46 |
| pK2: |
7.49 |
pK2°I=0 (Conversion to I = 0): |
7.38 |
pK22.31 nm−2 (normalized): |
7.83 |
| Site Density in nm-2: |
1.0539 |
| Original Site Density: |
0.000007 mol / g solid
|
| Solid/Liquid Ratio in g/L: |
|
| pH Range: |
|
| Temperature in K: |
|
| Method for Site Density: |
Potentiometric Titration |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | FITEQL |
| Comment: |
pH<=6, also values for 0.01 M and 0.001 M given (but with a poorer fit), citation in [RGKB98b]: SSD(total) = 6.95+-0.14*10^-6 mol/g |
| |
