Table 2. Conditions of Ozonation Experiments with Lake Zurich Water (1.4 mgC/L DOC, 2.7 mM Alkalinity, 2 μM Bromide (spiked), 0.5 μM pCBA (spiked), 1 mM Phosphate Buffer at pH 7.6 (spiked)) and the Determined R_ct (Figure 20a), the Bromate Formation Slopes Expressed As a Function of Ozone Exposure, And the Change in Bromate Formation with Regard to the Reference Conditions.

no.	condition	comment	Rct	slope (μM/(M s))a	change in bromate formationb (%)	reference condition
1	Lake Zurich water (unaltered)	reference for low Rct	3.7 × 10–9	29.5 ± 6.8
2	Lake Zurich water + 10 μM formate	reference for high Rct	7.4 × 10–9	33.8 ± 3.9	+15	1
3	Lake Zurich water + 4 μM NH4+	NH4+ as HOBr quencher	4.3 × 10–9	18.9 ± 0.8	–36	1
4	Lake Zurich water + 7 μM NH2Cl	NH2Cl as HOBr/Br• quencher	5.6 × 10–9	11.8 ± 1.1	–60	1
5	Lake Zurich water + 15 μM NH2Cl	NH2Cl as HOBr/Br• quencher	9.9 × 10–9	7.9 ± 0.7	–73	1
					–77	2
					–58	3

^aSlopes were obtained from linear regression of a bromate concentration plot as a function of ozone exposure for the initial phase (Figure 4b).

^bChanges in bromate formation were obtained by comparing the slope of a condition with the slope of a reference condition specified in the last column.