| Mineral: |
Zircon |
| Reference: |
LDS03 |
| SCM Type: |
CC - Constant Capacitance
(C1: 3.1 F/m2) |
| Ionic Strength: |
0.5 mol/L of
KNO3
|
| Site Type: |
»Si-OH |
| PZC: |
6.0 |
| pK1: |
|
pK1°I=0 (Conversion to I = 0): |
|
|
| pK2: |
8.2 |
pK2°I=0 (Conversion to I = 0): |
8.07 |
pK22.31 nm−2 (normalized): |
8.26 |
| Site Density in nm-2: |
2.0000 |
| Original Site Density: |
2.0 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
20.0 |
| pH Range: |
3-11 |
| Temperature in K: |
298.15 |
| Method for Site Density: |
Potentiometric Titration |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | FITEQL |
| Comment: |
PZC=6.0+-0.3 determined by mass titration method; according to the chemical formula of zircon, the authors chose to give as an initial guess for each site density half of the total site density (4 sites/nm²); in fact the fitted site densities remained very close to these initial values. |
| |
| Mineral: |
Zircon |
| Reference: |
LDS03 |
| SCM Type: |
CC - Constant Capacitance
(C1: 3.1 F/m2) |
| Ionic Strength: |
0.5 mol/L of
KNO3
|
| Site Type: |
»Zr-OH |
| PZC: |
6.0 |
| pK1: |
5.2 |
pK1°I=0 (Conversion to I = 0): |
5.07 |
pK12.31 nm−2 (normalized): |
5.14 |
| pK2: |
7.0 |
pK2°I=0 (Conversion to I = 0): |
6.87 |
pK22.31 nm−2 (normalized): |
7.06 |
| Site Density in nm-2: |
2.0000 |
| Original Site Density: |
2.0 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
20.0 |
| pH Range: |
3-11 |
| Temperature in K: |
298.15 |
| Method for Site Density: |
Potentiometric Titration |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | FITEQL |
| Comment: |
PZC=6.0+-0.3 determined by mass titration method; according to the chemical formula of zircon, the authors chose to give as an initial guess for each site density half of the total site density (4 sites/nm²); in fact the fitted site densities remained very close to these initial values. |
| |
