RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Goethite
Reference: MFG98
SCM Type: CC - Constant Capacitance
Ligand: AsO3<3-> - arsenite
Site Type: »Fe-OH
Equation: 2 »Fe-OH + AsO3<3-> + 2 H<1+>  ⇔  (»Fe)2-AsO3<1-> + 2 H2O
LogK: 35.211         LogK2.31 nm−2 (SSD-normalized):   44.54
Experiment: Batch Sorption Experiments
Ionic Strength:
Fit Method: FITEQL
Comment: background electrolyte information missing; original equation in the study: 2 »Fe-OH + H3AsO3 = (»Fe)2-AsO3<1-> + H<1+> + 2 H2O, logK = 0.511; formation constant in aqueous solution: H3AsO3 = AsO3<3-> + 3H<1+> with logK = -34,7 (MBK00]
 
1 data sets were retrieved