Atrazine and other members of the s-triazine family are widely used on major food crops as well as non-crop areas. Unfortunately, they are poorly degradable in the natural environment and tend to ...accumulate in the surface and ground water wherefrom they penetrate in the drinking water systems. High concentration of atrazine is a common and urgent problem of many drinking water sources, located in the areas with intensive agriculture production. Among various processes, suggested to address this problem, ozonation is one of the most frequently studied and applied. There were several attempts to elucidate the mechanism of atrazine reaction with ozone. Nevertheless, the best to our knowledge, there was no detailed study of reactive intermediates, involved in this reaction. It has been shown that alkyl hydrotrioxides (ROOOH) and dihydrogen trioxide (HOOOH) are generated in the reaction of ozone with various saturated organic compounds. These species are believed to be the key intermediates in atmospheric chemistry, environmental chemistry (i.e., "peroxone" process), and biochemical oxidations. We wish to report the NMR spectroscopic detection and characterization of hydrotrioxides (ROOOH, R = H, alkyl), formed in the ozonation of atrazine and its degradation products. The kinetics of atrazine ozonation in water with and without addition of Pt-catalyst is also presented.
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