Fig. 3. Depth profiles of normalized total concentrations, ct, of brilliant sulfaflavine (BF) and sulforhodamine B (SB) in soil cores (# refers to soil core number). Total concentrations, mass of dissolved and adsorbed dye per unit volume of bulk soil are normalized vs. the expected total dye concentration when the initial soil solution is completely replaced by the applied solution and in equilibrium with the adsorbed dye concentration (Eq. [10]). Lines are depth profiles predicted by the convection dispersion model that is calibrated to the Cl- breakthrough. The amount of water that drained from the cores since the start of the leaching experiment is given in parentheses.
