Mineral: |
Goethite |
Reference: |
AWJ06a |
SCM Type: |
ECC - Extended Constant Capacitance
(C1: 2.0 F/m2, C2: 2.6 F/m2) |
Ionic Strength: |
0.005 mol/L of
KNO3
|
Site Type: |
»Fe-OH |
PZC: |
|
pK1: |
5.96 |
pK1°I=0 (Conversion to I = 0): |
5.93 |
pK12.31 nm−2 (normalized): |
5.88 |
pK2: |
9.74 |
pK2°I=0 (Conversion to I = 0): |
9.71 |
pK22.31 nm−2 (normalized): |
9.82 |
Site Density in nm-2: |
1.9271 |
Original Site Density: |
3.2 µmol / m² surface
|
Solid/Liquid Ratio in g/L: |
1.9 |
pH Range: |
3-9 |
Temperature in K: |
328.15 |
Method for Site Density: |
Sorption Isotherms |
Method for Protolysis: | Potentiometric Titration |
Fit Method: | FITEQL |
Comment: |
FITEQL and GRFIT; pK and SSD from [AWJ99b] (but there SSD=2.2 µmol/m^2); also datasets for 10, 25, 40 and 70°C are reported |
|