Fig. 3. Dependency of organic C normalized distribution coefficients (K_oc) on pH of ten aerobic and anaerobic wetland soils. (a) pentachlorophenol, (b) 2,3,4,5-tetrachlorophenol, (c) 3,4,5-trichlorphenol, and (d) 3,5-dichlorophenol. Arrows show the position of the pK_a of the chlorophenols.