Mineral: |
Birnessite |
Reference: |
PD13 |
SCM Type: |
DDL - Diffuse Double Layer |
Ligand: |
Gd<3+>
- gadolinium
|
Site Type: |
»Mn(s)-OH |
Equation: |
»Mn(s)-OH + Gd<3+> ⇔ »Mn(s)-O-Gd<2+> + H<1+> |
LogK: |
0.31
LogK2.31 nm−2 (SSD-normalized): 4.08
|
Experiment: |
Best Estimate |
Ionic Strength: |
NaNO3
|
Temperature: |
298.15 K |
Solid/Liquid Ratio: |
0.01 g/L |
pH Range: |
4 - 9.5 |
Ligand Concentration Range: |
7.949E-7 mol/L |
Fit Method: |
LFER |
Comment: |
REE-HMO stability constants extrapolated from the LFER established by [TBM04]; logKGdOH = 6.17 (the first hydrolysis constant of REE, logKREE-OH, is taken from the NIST database [38]) |
|