Fig. 4. Dependency of organic C normalized distribution coefficients (K_oc) on the octanol-water distribution coefficient of chlorophenols. The solid line is the least-squares fit of the data from this study. Data from other studies are provided for comparison. The K_oc values for the neutral and ionic forms of chlorophenols in this study were determined by substituting appropriate pH values into equations in Fig. 3, and K_ow values were obtained from the literature (see text for more details).