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On the formation of hydrogen peroxide in water microdroplets

“…1-2): trace amount of H 2 O 2 could be present even in the water obtained from reverse osmosis 38 . During spraying, as the solvent evaporates, the solute might concentrate, since the boiling point of H 2 O 2 at 1 atm is 423K that is 50 K higher than that of water 39,40 ; so H 2 O 2 is expected to evaporate slower than water in the sprays and concentrate. ii.…”

“…As a solution comprised of water and H 2 O 2 evaporates, for instance, inside a vacuum oven or in the form of sprayed microdroplets, the ratio of the formed vapor (H 2 O(g):H 2 O 2 (g)) is not the same as their bulk concentration (H 2 O(l):H 2 O 2 (l)). This is so because water evaporates faster due to its lower boiling point (373 K at 1 atm) than that of H 2 O 2 (423 K at 1 atm) 39,40…”