Pairwise comparisons of non-targeted removal at a) 45 L/min, 3 mM H2O2 versus 45 L/min, 0 mM H2O2 (air core present). b) 125 L/min, 6 mM H2O2 with and without the air core. Symbol color indicates whether the feature was a database match “database”, was assigned a molecular formula “formula”, or was unmatched “MFE”. Size indicates the probability of removal (1-α) of that feature under the reactor condition on the y-axis