|
As the traffic congestion is getting accelerated, it is recommended that they use and develop public transportation. In Seoul, underground Is used as a crucial transportation. In addition to this, the time we stay around underground keeps increasing. In this view. the environmental sanitation of underground and stations must be considered as a basis. The following are the results of this study: 1. The average amount of dropping bacteria investigated through 4 lines of underground in Seoul is shown as 124.8CFU/plate. The minimum is 57CFU/plate at Dorimchon station and the maximum is 256.3CFU/plate at Heahwa station. 2. They can hardly find the different in the amount of dropping bacteria among a platform, a toilet and a ticket gate where we extract the samples. 3. In comparison with the amount of dropping bacteria which is extracted in Japan for 5 minutes, 75CFU/plate, ours are shown 1.6 times as much as theirs. This kind of amount might keep increasing as the population using underground and the time they spend around underground are getting more. As a result we are urged to consider a counter plan. 4. Through we have not investigated the amount of dropping bacteria by time, we need variety of investigations that are divided by time as well as season in order to estimate ecological circumstances accurately. Moreover we need to watch the movement of dropping bacteria.
|