Figure 3.

Calculated fractions (see text) of Br^• reacting with DOM (green line), ozone (red line), bromide (blue line), or NH₂Cl (orange line) as a function of ozone concentration in the (a) absence or (b) presence of NH₂Cl. The selected concentrations were 1 mgC/L DOC, 0.2 μM Br^– (16 μg/L Br^–), and 15 μM NH₂Cl. Shaded areas indicate a typical range of ozone doses applied in drinking water treatment in Switzerland (0.5–1.0 mgO₃/mgC).