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(w)-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: |
2.3081 |
Original Site Density: |
0.000253 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) |
|