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 |
|