| Mineral: |
amorphous Silica |
| Reference: |
SVV03 |
| SCM Type: |
DDL - Diffuse Double Layer
|
| Ionic Strength: |
0.01 mol/L of
NaNO3
|
| Site Type: |
»Si-OH |
| PZC: |
6.72 |
| pK1: |
2.95 |
pK1°I=0 (Conversion to I = 0): |
2.91 |
pK12.31 nm−2 (normalized): |
3.31 |
| pK2: |
10.57 |
pK2°I=0 (Conversion to I = 0): |
10.53 |
pK22.31 nm−2 (normalized): |
10.21 |
| Site Density in nm-2: |
5.2344 |
| Original Site Density: |
0.00618 mol / g solid
|
| Solid/Liquid Ratio in g/L: |
2.5 |
| pH Range: |
2.5-9.5 |
| Temperature in K: |
303.0 |
| Method for Site Density: |
Potentiometric Titration |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: |
| Comment: |
fit by Newton-Raphson's multidimensional non-linear regression method, using a computer code developed by Stamberg et al.; sigma of K1=1.83E3; sigma of K2=4.72E10; DLM not suitable for describing the titration curve, not only owing to the poor statistical quantities, but also to the high magnitude of PZC resulted from modeling |
| |
