Distribution of Indoor PM1 at Subway Stations

초록

Particulate matters (PM) in underground station is know as one of major pollutants affecting millions of passengers' health in their daily life. In metro-city such as Seoul, outdoor PM mostly exhausted from road traffic can be transported into underground stations and indoor sources of PM generated by friction between the wheels and the rails of train, between the wheels and the brake pads, and between the catenaries and the pantographs can be suspending in underground station. It is well known that combustion process results in nuclei mode of particles wherever friction process results in coarse mode of particles.