Fig. 2. Free trinitrotoluene (TNT) and aminodinitrotoluene (ADNT) concentrations as a function of time, pH, and ionic strength in the presence of 0 or 90 mg C L^-1 of dissolved organic matter (DOM) (one-phase system). Filled symbols refer to pH 6.0 and open to pH 3.7. The initial concentrations were calculated. IS = ionic strength.