Mineral: |
Ferrihydrite |
Reference: |
ZB04a |
SCM Type: |
NE - Non-electrostatic
|
Ionic Strength: |
|
Site Type: |
»Fe-OH |
PZC: |
8.0 |
pK1: |
7.29 |
|
pK12.31 nm−2 (normalized): |
7.29 |
pK2: |
8.93 |
|
pK22.31 nm−2 (normalized): |
8.93 |
Site Density in nm-2: |
2.3100 |
Original Site Density: |
2.31 sites / nm² surface
|
Solid/Liquid Ratio in g/L: |
|
pH Range: |
|
Temperature in K: |
298.15 |
Method for Site Density: |
Mean of Different Sources |
Method for Protolysis: | Mean of Different Sources |
Fit Method: | FITEQL |
Comment: |
SSA from [D78]; SSD assumed as 2.31 sites/nm² as suggested in [DM90] p. 92-93, original values in mol/mol Fe (in Fe2O3*H2O); pK weighted averages of literature titration data, confidence level 95%; PZC in the range 7.9-8.2 with an average value of 8.0; SCM-Type in [DM90]: DDL |
|