マルチノズルカスケードインパクタ(MCI)サンプラーを用いた近年の道路沿道と一般環境における粒子状物質(PM2.5及びPM2.5-10)の比較
Comparison of particulate matter (PM2.5 and PM2.5-10) between roadside air and ambient air using MCI(multi-nozzle cascade impactor) sampler

Shin-ichi YONEMOCHI, Natsumi UMEZAWA, Mitsuhisa ISOBE, Rie MATSUMOTO, Junko FUKAI, Hiroki JO, Kenji SEKINE, Kazuya AIZAWA
2009 Journal of Japan Society for Atmospheric Environment / Taiki Kankyo Gakkaishi  
Fine particles (PM 2.5 ) and coarse particles were collected at six sites, composed with three pairs of roadside of route 17 in Saitama prefecture and ambient located within 4 km using Multi-nozzle cascade impactor (MCI) samplers. PM 2.5 concentrations with MCI sampler were 5 % higher than those with FRM sampler. Correlation coefficient of PM 2.5 concentration between at roadside and ambient was higher than that of PM 2.5-10 . However, PM 2.5 concentration at ambient, especially Kisai located
more » ... lly Kisai located country side, was sometimes higher than that at roadside. It is probably caused by open burning of biomass after harvest. Sea-salt particles in PM 2.5-10 were transported to Kisai located in the distance of 55 km from Tokyo bay in summer. It was cleared that the variation of concentrations of sulfate ion at six sites were extremely similar in summer and winter, by evaluation of coefficient of variation in all sampling periods. It shows that a large -scale pollution of sulfate, for example long distance transportation from Eastern Asia or another emission sources occurs.
doi:10.11298/taiki.44.211 fatcat:iws7chbuvjcx3bptxlva33iedq