HYDROXYL RADICAL/OZONE RATIOS DURING OZONATION PROCESSES. I. THE...

Courtesy Recent Science Inventory records from the EPA  Wed, 11/19/2008 - 11:57

The ozonation of model systems and several natural waters was examined in bench-scale batch experiments. In addition to measuring the concentration of ozone (03), the rate of depletion of an in situ hydroxyl radical probe compound was monitored, thus providing information on the transient steady-state concentration of hydroxyl radials (*OH).

A new parameter, Rct, representing the ratio of the *OH-exposure to the O3-exposure was calculated as a function of reaction time.

For most waters tested, including pH-buffered model systems and...

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