디젤 기관차 정차 전후의 역사 내 휘발성 유기화합물(VOCs) 함량 변화

다국어 초록 (Multilingual Abstract)

Problems with air pollutants emitted from diesel locomotives are being drawn, but it will take more
than 20 years to switch to electric rail vehicles. In this study, considering that the retention rate of
diesel locomotives on Janghang line is 95%, we are looking at changes in the volume of VOCs
(volatile organic compounds) before and after the train stops among the gas pollutants emitted into the
atmosphere.
For the 4 stations of diesel locomotives stopping on up and down the Janghang line, the results
of measuring the concentration of VOCs in the air at the platform in the direction of the train were
analyzed over a total of eight times, using a portable VOCs measuring device (ppb-RAE 3000).
The average concentration of VOCs in the air collected from 4 Janghang line stations where
diesel locomotives stop were 6.3 ppb, and the highest concentration was 349 ppb, much lower than
the VOCs exposure standard of 500㎍/㎥ under the Korean Indoor Air Quality Management Act.
Among the stations surveyed, the concentration of VOCs at stations P and C sharing the Kyungbu
line and platform averaged 16.9 ppb, 7.0 ppb, significantly higher than 1.0 ppb, 0.4 ppb at stations O
and D that only stop the Janghang line (p<0.001). When the VOCs concentration in the platform air
before and after the train's entry was divided by time zone, the concentration was statistically
significantly high at the time of the stop on 3 minutes (p<0.001).
The above results suggest that the rapid increase in concentration during diesel train stops is
due to the presence of volatile organic compounds in the gases emitted by the idling of the train's
engine. Therefore, it is deemed necessary to change facilities such as ventilation through the
opening of the platform ceiling and switch to electric locomotives as soon as possible.