RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Goethite
Reference: BM79
SCM Type: TL - Triple Layer
Ligand: Na<1+> - sodium
Site Type: »Fe-OH
Equation: »Fe-OH + Na<1+>  ⇔  »Fe-O-Na + H<1+>
LogK: -9.6         LogK2.31 nm−2 (SSD-normalized):   -8.88
Experiment: Potentiometric Titration
Ionic Strength: 1.0 mol/L NaCl
Fit Method: graphic extrapolation
Comment: double extrapolation; experiments in 0.1 and 0.7M NaCl or Na2SO4 or mixed electrolyte solutions of different ionic strength containing the major ions of seawater in their appropriate seawater proportions; extrapolation to 1.0 M; free of CO2; fig.5: logK=-9.55
 
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