The influence of phosphates on the decomposition of ozone in water: Chain process inhibition

ArticleinRussian Journal of Physical Chemistry 84(7):1136-1140 · July 2010with16 Reads
Impact Factor: 0.56 · DOI: 10.1134/S0036024410070101

The addition of phosphates was found to decrease the rate of the decomposition of ozone in water; they accepted hydroxyl radicals and thereby inhibited chain ozone decomposition. The presence of phosphates decreased the order of the reaction from second for pure water to one-and-a-half. The rate constants for ozone decomposition in the presence of various phosphate concentrations increased as pH grew from 4 to 9.

    • "7.2 which is very close to the switching value of 7.4 for k' 1 defined in Equation (14). Then, it can be suggested that the participation of the phosphates are not as radical scavengers as it was proposed in other works (Bi´nBi´n et al. 2013; Morozov and Ershov 2010) but as a proton source for the chemical reaction: "
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