RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Ferrihydrite
Reference: DM90
SCM Type: DDL - Diffuse Double Layer
Ligand: AsO3<3-> - arsenite
Site Type: »Fe-OH
Equation: »Fe-OH + AsO3<3-> + 3 H<1+>  ⇔  »Fe-H2AsO3 + H2O
LogK: 40.11 ± 0.15         LogK2.31 nm−2 (SSD-normalized):   42.10
Experiment: Mean of Different Sources
Ionic Strength:
Fit Method:
Comment: original equation in the study: »Fe-OH + H3AsO3 = »Fe-H2AsO3 + H2O, logK = 5.41; formation constant in aqueous solution: H3AsO3 = AsO3<3-> + 3H<1+> with logK = -34,7 (MBK00]
 
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