Mineral: |
amorphous Silica |
Reference: |
SS97a |
SCM Type: |
TL - Triple Layer
(C1: 0.9 F/m2, C2: 0.2 F/m2) |
Ionic Strength: |
0.1 mol/L of
KNO3
|
Site Type: |
»Si-OH |
PZC: |
3.5 |
pK1: |
-0.7 |
pK1°I=0 (Conversion to I = 0): |
-0.81 |
pK12.31 nm−2 (normalized): |
-0.48 |
pK2: |
7.7 |
pK2°I=0 (Conversion to I = 0): |
7.59 |
pK22.31 nm−2 (normalized): |
7.48 |
Site Density in nm-2: |
3.8000 |
Original Site Density: |
3.8 sites / nm² surface
|
Solid/Liquid Ratio in g/L: |
|
pH Range: |
|
Temperature in K: |
|
Method for Site Density: |
Tritium Exchange |
Method for Protolysis: | Mean of Different Sources |
Fit Method: | GEOSURF |
Comment: |
raw data from [Y75]; PCZ=0.5(pK1+pK2); pK1 and pK2 predicted from experimental PZC and from delta pK |
|