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- Title
YEAR-ROUND BEHAVIOR FOR INORGANIC COMPOSITION OF SIZE-RESOLVED AIRBORNE PARTICLES IN HIMEJI CITY, JAPAN.
- Authors
SAITOH, KATSUMI; SHIMA, MASAYUKI; YODA, YOSHIKO; NAKATSUBO, RYOUHEI; TSUNETOMO, DAISUKE; HIRAKI, TAKATOSHI; SERA, KOICHIRO
- Abstract
As a part that, an epidemiological study on the effects of physicochemical characterization of airborne particulate matter (PM) and ozone on asthma attacks, we carried out size-resolved sampling of PM in Himeji City, and elemental and ionic composition analyses of the PM sample. Size-resolved PM was collected using a 3-stage NLAS impactor (Tokyo Dylec Co., Ltd.; particle cut size at sampling stages was 10, 2.5 and 1.0 μm for a flow rate of 3 L/min) with a one-week base sampling interval, and the PM sampling was begun in November, 2009. Concentrations of several elemental and ionic species in the PM sample were determined by PIXE and ion chromatography analysis, respectively. The research results are important for the physicochemical characterization of PM in atmosphere, enabling detailed analysis of the year-round behavior. Of particular note, is that the PM10 was mainly NO3- and SO42- and PM2.5 was only SO42-. This is believed to suggest the different formation processes of NO3- and SO42-.
- Subjects
HIMEJI-shi (Japan); JAPAN; PARTICULATE matter; AIR pollution; RADIOACTIVE aerosols; PROTON-induced X-ray emission; ASTHMA
- Publication
International Journal of PIXE, 2012, Vol 22, Issue 1/2, p179
- ISSN
0129-0835
- Publication type
Article
- DOI
10.1142/S0129083512400104