Mineral: |
Goethite |
Reference: |
VL01 |
SCM Type: |
TL - Triple Layer
(C1: 1.0 F/m2, C2: 0.2 F/m2) |
Ionic Strength: |
NaNO3
|
Site Type: |
»Fe-OH |
PZC: |
8.9 |
pK1: |
6.9 |
|
pK12.31 nm−2 (normalized): |
7.54 |
pK2: |
10.9 |
|
pK22.31 nm−2 (normalized): |
10.26 |
Site Density in nm-2: |
10.0000 |
Original Site Density: |
10.0 sites / nm² surface
|
Solid/Liquid Ratio in g/L: |
|
pH Range: |
|
Temperature in K: |
|
Method for Site Density: |
Empirical Correlation |
Method for Protolysis: | Potentiometric Titration |
Fit Method: |
Comment: |
background electrolyte 0.01, 0.05 and 0.1 M, raw data from [VL00]; PZC=PZNPC from [VRL94] (NaClO4 medium); SSD more reasonable upper value since few experiments of maximum ionic adsorption; delta pK=4; C2 based on analysis of compact-layer capiv´citance on AgI surface (Lyklema and Overbeck, 1961) |
|