Table 1

Surface areas, surface site types and site densities used in DLM calculations.

Solid
Surface Area (m2/g)
Site Types
Site Density (μmol/m2)

HFO (2-site model)
600[4]
>Fe(s)OH
0.094[4]


>Fe(w)OH
3.74[4]
HFO (1-site model)
600[4]
>FeOH
16.6[38]
Kaolinite (KGa)
13.6 (this study)
>SOH
16.6[38]


X
2.2a
Kaolinite (Wards)
25.7 (this study)
>SOH
16.6[38]


X
1.2a

a. From CEC (3.0 meq/100 g) measured by Bordon and Giese [41] for kaolinite KGA-1b

Lund et al. Geochemical Transactions 2008 9:9   doi:10.1186/1467-4866-9-9