RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Goethite
Reference: AVTC02
SCM Type: DDL - Diffuse Double Layer
Ligand: CO3<2-> - carbonate
Site Type: »Fe(w)-OH
Equation: »Fe(w)-OH + CO3<2->  ⇔  »Fe(w)-OH-CO3<2->
LogK: 4.78 ± 0.14         LogK°I=0 (Conversion to I = 0):   5.21         LogK2.31 nm−2 (SSD-normalized):   9.09
Experiment: Potentiometric Titration
Ionic Strength: 0.1 mol/L NaCl
Solid/Liquid Ratio: 2.0 g/L
pH Range: 3-8
Ligand Concentration Range: 6.3E-5-1.33E-4 mol/L
Fit Method: PEST
Comment: PEST in combination with PHREEQC-2; values from batch sorption experiments of [VL00]; PEST (nonlinear parameter estimation programme) in combination with PHREEQC-2; uncertainty interval indicates the aproximate 95% confidence limits
 
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