Fig. 5
From: Wien effect of Cd/Zn on soil clay fraction and their interaction
Mean free adsorption energies as function of field strength for suspension (10 g L−1) of clay fractions (< 2 μm) of paddy soil (Inceptisols) (LY) (a), boggy soil (Histosols) (JH) (b), yellow brown soil (Haplic Luvisols) (NJ) (c) and yellow drab soil (Ustalfs) (XY) (d) saturated with different ratios of Cd2+–Zn2+ in deionized water