Measurements of the biogenic volatile organic compounds by the new analysis method for the atmospheric trace species

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It has been thought that the trend of the increment of the photochemical oxidant is probably related to the existence of the unknown volatile organic compounds (VOCs). In the present studies, I focused the plants as the emission source of the unknown VCOs, and measured the biogenic VOCs by the total OH reactivity: the new analysis method for the atmospheric trace species.As a results, I cannot confirmed the existence of unknown VOCs for the plants emits mainly isoprene. For the plants emits mainly monoterpenes, unfortunately I cannot try the OH reactivity measurements. But many kinds of monoterpenes are observed by the preliminary GC-FID measurements. This results implies the probability of the existence of the unknown species.