FIG. 5. Breakthrough curves calculated using the Mobile–Immobile Water Model for a 10-cm-long soil column and the following parameters: q = 3 cm d^–1, = 0.5, _mo = 1 cm, K_d = 1 cm³ g^–1, _b = 1.5 g cm^–3. On the left: f_mo = 0.6, _mo = 0.3, _im = 0.2, and _mim = 0.1, 0.5, 10 d^–1. On the _{right: mim = 0.5 d–1 and (a) fmo = 0.4, mo = 0.2, im = 0.3; (b) fmo = 0.6, mo = 0.3, im = 0.2; and (c) fmo = 0.8, mo = 0.4, im = 0.1.}