Single particle analysis of atmospheric particulate matters collected in Kobe city at April and September 2003
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Asian dust-storm (ADS) particles are significant as atmospheric particles during spring season in Japan. To investigate the characteristics of ADS particles and non-Asian dust-storm (non-ADS) particles, we collected atmospheric particles by low pressure andersen impacter in Kobe city in April and September 2003. We measured morphology and compositions by using field emission scanning electron microscopy (FE-SEM) coupled with an energy dispersive X-ray spectrometer (EDS). To estimate possible sources of the particles, all individual particles were divided into 6 groups according to their chemical compositions by cluster analysis.<BR>The number of the soil particles in the size range of 0.47μm-7.65μm during ADS period was about two times high compared with that of the non-ADS counterpart. The max percentage of metal particles were 0.47μm-0.67μm in ADS period and 1.17μm-2.05μm in non-ADS period. 27% of 0.47μm-0.67μm particles were metal particles during ADS period. Spherical iron particles were observed on the surface of soil particles in ADS period.
- 社団法人 大気環境学会の論文
社団法人 大気環境学会 | 論文
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