FIG. 5. The sorbed and dissolved Cd-concentration profiles measured at the site in Braunschweig, Germany, sorbed and dissolved concentrations predicted with the local extended Freundlich equation (Streck and Richter, 1997b) as well as the depth distribution (including the 95% confidence interval) predicted with the extended Cd–Freundlich equation derived by Utermann et al. (2005).