RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Goethite
Reference: RHV06a
SCM Type: CDM - (CD-)MUSIC
Ligand: K<1+> - potassium
Site Type: »Fe-singly
Equation: »Fe-singly-OH<0.5-> + K<1+>  ⇔  »Fe-singly-OH-K<0.5+>
LogK: -0.38 ± 0.14         LogK°I=0 (Conversion to I = 0):   -0.25         LogK2.31 nm−2 (SSD-normalized):   -0.31
Experiment: Potentiometric Titration
Ionic Strength: 0.2 mol/L KNO3
Temperature: 293.15 K
Solid/Liquid Ratio: 16.52 g/L
pH Range: 5-10.5
Ligand Concentration Range: 0.2 mol/L
Fit Method:
Comment: to simplify the modeling, the logK for singly and triply coordinated surface groups are set equal
 
1 data sets were retrieved