Mineral: |
amorphous Silica |
Reference: |
SS97a |
SCM Type: |
TL - Triple Layer
(C1: 1.2 F/m2, C2: 0.2 F/m2) |
Ionic Strength: |
KCl
|
Site Type: |
»Si-OH |
PZC: |
3.5 |
pK1: |
-0.7 |
|
pK12.31 nm−2 (normalized): |
-0.40 |
pK2: |
7.7 |
|
pK22.31 nm−2 (normalized): |
7.40 |
Site Density in nm-2: |
4.6000 |
Original Site Density: |
4.6 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 [A70]; 1, 0.1, and 0.01 M KCl; PCZ=0.5(pK1+pK2); pK1 and pK2 predicted from experimental PZC and from delta pK |
|