Oxide—water interface, speciation adsorbed ions

Speciation of Adsorbed Ions at the Oxide/Water Interface... 

The modeling results suggest that the physico-chemical state of the oxide/water interface has a significant effect on the speciation of ions at the surface. For example, adsorbed metal ions may be more easily hydrolyzed (. . at lower pH) than aquo metal ions in bulk solution. Consider the following surface equilibria of Cu(II) (2), i.e.. 

Comprehensive recent surveys of the triple layer model are to be found in J. A. Davis and J. O. Leckie, Speciation of adsorbed ions at the oxide/water interface, in Chemical Modeling in Aqueous Systems (E. A. Jenne, ed. American Chemical Society, Washington, D.C., 1979) and in R, O, James and... 

Chisholm-Brause, CJ, Morris DE, Richard RE (1992b) Speciation of uranium(VI) sorption complexes on montmorillonite. Water-Rock Interactions, Proc 7th Int Symp 1 137-140 Chisholm-Brause CJ, O Day PA, Brown GE Jr, Parks GA (1990a) Evidence for multinuclear metal-ion complexes at solid/water interfaces from X-ray absorption spectroscopy. Nature 348 528-531 Chisholm-Brause CJ, Roe AL, Hayes KF, Brown GE Jr, Parks GA, Leckie JO (1989b) XANES and EXAFS study of aqueous Pb(II) adsorbed on oxide surfaces. Physica 158,674-676 Chowdhury TR, Basu GK, Mandal BK, Biswas BK, Samanta G, Chowdhury UK, Chanda CR, Lodh D, Roy SL, Saha , Roy S, Kabir S, Quamruzzaman Q, Chakraborti D (1999) Arsenic poisoning in the Ganges delta. Nature 401 545-546... 

---