Research Project code：9800045539
Update date：Dec. 15, 2003
Size distribution and vertical profile of carbon components in ambient particulate matter
1997 - 1998
Investigating Researcher (4)：
Vertical profile of carbon components in ambient particulate matter was investigated every month for five years since 1990 at 3 points of Tokyo tower. In addition, the size distribution was investigated in summer and winter of the last year of these five years. Concentrations, of elemental carbon and organic carbon had decreasing tendecies with height. The decreasing tendency of organic carbon was larger than that of elemental carbon. Next, considering the range of particle size, the tendency to decrease was observed obviously on fine particles of elemental carbon in winter and coarse particles of organic carbon in summer. So, it was considered that organic carbon had a possibility of resolution, and that elemental carbon was influenced by automobile.
Return to Previous Page