碩士 / 國立臺北科技大學 / 環境規劃與管理研究所 / 92 / Commuters are usually exposed to highly concentrated pollutants during rush hours, which significant contributes to individual cumulative exposure. This research studied the in-vehicle air quality of the Metropolitan Rapid Transit (MRT) and city buses in Taipei, and of the long-distance buses to/from Taipei while commuting.
An extensive survey using various portable indoor air quality monitors was conducted to measure the in-vehicle concentrations of nitrogen dioxide, nitrogen monoxide, sulfur dioxide, carbon monoxide, carbon dioxide, ozone, formaldehyde, volatility organic compounds, and temperature, relative humidity from December 2003 to March 2004. This research studied the in-vehicle air quality of three public transportations: MRT, city buses, and long-distance buses during both morning and evening rush hours. Three MRT routes, three city bus routes and one Taipei-Kaohsiung route were studied to represent the commuting microenvironments in metropolitan Taipei.
The results indicate that commuter’s exposure is highly influenced by the types of commuting microenvironment. The in-vehicle air quality of MRT is the best among all three vehicles, followed by the city buses. The air quality in long-distance buses is the worst. The most serious pollutants are NO2 (0.35 ~ 0.42 ppm) and TVOC (0.19 ~ 0.98 ppm), with both concentrations exceed WHO short-term exposure guidelines (NO2 0.21 ppm, TVOC 0.13 ppm) for all three vehicles. For the in-vehicle air circulation, the CO2 concentrations (1257 ~ 2330 ppm) exceed WHO indoor air quality guidelines (920 ppm) in all three commuting vehicles, as well. The in-vehicle comfortableness (temperature and relative humidity) did not meet ASHRAE winter suggestion scope during the long-distance bus commuting. The average temperature of the long-distance bus was 18.2℃ is colder than the ASHRAE indoor guidelines 20 ~ 24℃ for winter, and the average relative humidity 67.7% exceeded ASHRAE indoor guidelines (below 65%).
| Identifer | oai:union.ndltd.org:TW/092TIT00514010 |
| Date | January 2004 |
| Creators | Yao-Chung Chang, 張耀鍾 |
| Contributors | Chao-Heng Tseng, 曾昭衡 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 160 |
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