Particle and Aerosol Research Vol. 4, No. 1, May 2008 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Comparison of the fine particle concentrations in Seoul and other foreign mega-cities
Seon Yeh Hong, Jung Jin Lee, Ji Yeon Lee and Yong Pyo Kim*
Abstracts
Temporal trends of the PM10 and PM2.5 mass concentrations, and the concentrations of chemical species (sulfate,
nitrate, ammonium, OC, and EC) in PM2.5 at Seoul are compared with the reported results from other mega
cities in the world. The mass concentrations of PM10 and PM2.5 at Seoul show decreasing trend. However, the
concentration levels are still higher than other cities except Beijing. The sulfate concentration at Seoul has decreased
while those of nitrate and ammonium have increased. The concentrations of OC and EC show no apparent
trend.
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