Mineral: |
amorphous Silica |
Reference: |
JP82 |
SCM Type: |
TL - Triple Layer
(C1: 1.25 F/m2, C2: 0.2 F/m2) |
Ionic Strength: |
0.0 mol/L of
KCl
|
Site Type: |
»Si-OH |
PZC: |
|
pK1: |
|
pK1°I=0 (Conversion to I = 0): |
|
|
pK2: |
7.2 |
pK2°I=0 (Conversion to I = 0): |
7.20 |
pK22.31 nm−2 (normalized): |
6.86 |
Site Density in nm-2: |
5.0000 |
Original Site Density: |
5.0 sites / nm² surface
|
Solid/Liquid Ratio in g/L: |
|
pH Range: |
3.5-9 |
Temperature in K: |
298.15 |
Method for Site Density: |
Literature |
Method for Protolysis: | Potentiometric Titration |
Fit Method: | graphic extrapolation |
Comment: |
raw data from [A70]; SSA from original reference; cited in [CM94], [S84a], [LMB95]; SSD from [JH71] (geometrical calculation); other SSD 12.5 (tritium exchange [Y75]) (table 3); 0.001-0.1M KCl |
|