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Table 4 Mean free adsorption energies of ions adsorbed in soil colloid particles with four soil types at field strength of 100, 150, 200, 250 kV cm−1

From: Wien effect of Cd/Zn on soil clay fraction and their interaction

Soil type Ratio of Cd2+/Zn2+ 100 150 200 250
kV cm−1
Boggy soil 1:1 1.18 2.09 3.14 3.84
1:3 0.57 1.33 2.17 2.93
3:1 0.49 1.17 2.22 2.93
Cd2+ 0.09 0.64 1.35 2.03
Zn2+ 0.00 0.23 0.77 1.25
Paddy soil 1:1 0.70 1.34 2.20 2.84
1:3 0.60 1.20 1.96 2.61
3:1 0.26 0.82 1.51 2.15
Cd2+ 0.82 1.48 2.37 3.01
Zn2+ − 0.04 0.08 0.53 0.85
Yellow brown soil 1:1 1.33 2.22 3.23 3.91
1:3 0.51 1.34 2.27 2.92
3:1 0.06 0.78 1.59 2.20
Cd2+ 1.50 2.42 3.45 4.12
Zn2+ − 0.28 0.48 1.28 2.02
Yellow drab soil 1:1 0.79 1.43 2.31 2.97
1:3 0.46 1.01 1.80 2.50
3:1 0.35 0.89 1.64 2.21
Cd2+ 0.74 1.44 2.31 2.97
Zn2+ − 0.14 0.56 1.32 2.05
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