UNDERSTANDING VARIATION IN PARTITION COEFFICIENT, Kd ...

Table E.4. Data from Rai et al. (1988) on effects of competing anions on Cr(VI)
adsorption on Cecil/Pacolet soil.
pH -log C
(mol/m 3 )
Cr(VI) 1 Cr(VI) + Sulfate 1 Cr(VI) + Carbonate 1
-log S
(mol/kg)
K d
(ml/g)
pH -log C
(mol/m 3 )
-log S
(mol/kg)
E.11
K d
(ml/g)
pH -log C
(mol/m 3 )
-log S
(mol/kg)
9.26 3.05 5.66 2 8.92 3.05 6.27 1 9.62 3.05 6.88 0
9.29 3.05 5.88 1 8.38 3.07 5.71 2 9.15 3.05 6.79 0
8.57 3.11 5.34 6 8.38 3.04 5.70 2 9.01 3.06 6.35 1
7.80 3.30 5.00 20 7.70 3.12 5.28 7 7.92 3.06 6.12 1
7.41 3.44 4.89 35 7.67 3.12 5.28 7 7.95 3.06 6.10 1
7.38 3.46 4.88 38 7.37 3.19 5.11 12 7.53 3.08 5.85 2
6.99 3.66 4.81 71 7.24 3.23 5.09 14 7.52 3.07 6.06 1
6.94 3.65 4.81 69 6.85 3.34 4.95 24 7.19 3.12 5.55 4
6.67 3.79 4.78 102 6.76 3.37 4.96 26 7.31 3.10 5.67 3
6.49 3.79 4.78 102 6.58 3.43 4.92 32 7.22 3.12 5.55 4
6.19 3.99 4.75 174 6.56 3.34 4.95 25 6.99 3.13 5.48 4
6.16 3.94 4.75 155 6.15 3.55 4.85 50 6.70 3.22 5.21 10
5.89 4.08 4.74 219 6.15 3.51 4.88 43 6.68 3.21 5.24 9
5.84 4.06 4.74 209 5.75 3.58 4.82 58 5.84 3.65 4.87 60
5.46 4.19 4.73 288 5.79 3.56 4.86 51 6.08 3.54 4.91 43
K d
(ml/g)
5.49 4.21 4.73 302 5.35 3.60 4.83 59 5.12 4.11 4.78 214
4.98 4.33 4.72 407 5.33 3.59 4.84 57 5.12 4.14 4.78 229
4.98 4.32 4.72 398 4.68 3.55 4.86 49 4.76 4.20 4.78 263
4.49 4.52 4.71 646 4.69 3.47 4.86 41 4.75 4.11 4.78 214
4.49 4.39 4.72 468 4.33 4.39 4.76 427
1 Cr(VI) concentration: 10 -6 M, Sulfate Concentration: 10 -2.7 M, CO 2 : 10 -1.6 atm.
4.34 4.37 4.77 398