Hydrocarbons, photochemical reactions with nitric oxide

Besides the photochemical dissociation, ozone decays in oxidation-reduction reactions with different species. The stratospheric 03 reacts rapidly with nitric oxide and products of photodissociation of halogenated hydrocarbons (Figure 9.5). 

Chemical radicals—such as hydroxyl, peroxyhydroxyl, and various alkyl and aryl species—have either been observed in laboratory studies or have been postulated as photochemical reaction intermediates. Atmospheric photochemical reactions also result in the formation of finely divided suspended particles (secondary aerosols), which create atmospheric haze. Their chemical content is enriched with sulfates (from sulfur dioxide), nitrates (from nitrogen dioxide, nitric oxide, and peroxyacylnitrates), ammonium (from ammonia), chloride (from sea salt), water, and oxygenated, sulfiirated, and nitrated organic compounds (from chemical combination of ozone and oxygen with hydrocarbon, sulfur oxide, and nitrogen oxide fragments). ... 

The reaction rate of photochemical decomposition at room temperature in the presence of oxygen and nitric oxides is lower for benzene than for other hydrocarbons [82]. In photochemical reactions, acrolein and glyoxal [83, 84] and primarily nitrobenzene and nitrophenols [85, 86] are formed from benzene in the presence of nitric oxides, with o- and p-nitrophenol being formed from nitrobenzene as intermediate [87]. If benzene is exposed to light in the presence of carbon monoxide and nitric oxides, then p-nitrophenol, 2,6-dinitrophenol and 2,4-dinitrophenol are formed [88]. 

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