Terpenes ozonolysis in indoor air often become an issue of indoor air quality by generation of particle and secondary oxidation products, although this reaction usually arises in atmosphere. Many reports that studied terpenes ozonolysis in indoor air didn't coexist with other VOC and NOx together for terpenes ozonolysis. However, numerous VOC and NOx exist in indoor; especially NOx is emitted from fuel combustion such as oil stove, gas stove and cooking range etc., and the concentration become high. In this study, we have shown that influence of coexistent NOx for a-pinene ozonolysis. As the results, NO addition (half concentration of ozone) promoted decomposition of a-pinene, and generated particle was smaller and less than without NO. It was estimated that NO oxidation produced radicals, and a-pinene was decomposed to low molecular mass substances than without NO. In contrast, NO addition (same concentration of ozone) remarkably inhibited a-pinene decomposition

Generation of particle and secondary oxidation products during terpenes ozonolysis: Influence of coexistent NOx

243rd National Meeting (2012)

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