| Budget Amount *help |
¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2016: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2015: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Outline of Final Research Achievements |
To review the counter measure of ambient fine particulate matter (PM2.5), it is necessary to reveal the generating process (primary / secondary) and the origin (fossil fuel / biomass) of the organic particles which are major components in warm and cold periods together.
The analyses of the organic molecular markers and radio isotopic carbon for PM2.5 collected during daytime and nighttime in summer and autumn in 2014 in the northern Saitama, Kazo clarified the following points; (1) The contribution of biomass origin particles to PM2.5 mass can be not ignored in both seasons; (2) The ratio of the secondary organic particles generated from isoprene and terpene in the summer and the ratio of primary organic particles emitted from biomass open-burning in the autumn were high; (3) As the counter measure of PM2.5 high concentration, emission reduction of precursors of fossil fuel-derived particles in summer and restriction of biomass open-burning in autumn are effective.
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