碩士 / 崑山科技大學 / 環境工程研究所 / 99 / The origin of the carbon content in airborne suspended particulates is complex. Most of the fine-grit particulates are produced by the combustion process from transportation vehicles such as automobiles and diesel vehicles. The particulates are emitted from the combustion of fuels and coals and produce secondary aerosols by photochemical reactions
In this study, the PM2.5 and PM10 carbon contents in the carbon emission from the mobile and diffuse pollution source in the airborne suspended particulates surrounding Tainan Science and Industrial Park during September 2010 through June 2011 were analyzed. The ratio of OC and EC was used to estimate the ratio of the secondary aerosols and the primary pollutants (fresh automobile and motorcycle exhaust). The results were then compared with those in Yunlin costal area and Tainan metropolitan area so as to understand the differences among these three areas.
The results showed that, in Tainan Science and Industrial Park, the PM10 concentration was 45 – 59 μg/m³ in September with the highest value 59 μg/m³ occurred at Da-She Elementary School; the PM10 concentration was 78 – 122 μg/m³ in November with the highest value 122 μg/m³ occurred at Da-She Elementary School; the concentration was 96 – 119 μg/m³ in February 2011 with the highest value 119 μg/m³ occurred at Nan-an Elementary School; the concentration was 79 – 97 μg/m³ in April 2011 with the highest value 97 μg/m³ occurred at Feng-hua Community Center. With the comparison of the four measurement results, the concentration in November was higher than the other three measurements. In terms of the OC/EC ratio, the ratio was 0.4 – 0.9 for PM2.5 and 0.4 – 0.7 for PM10 in September; 0.7 – 5.0 for PM2.5 and 4.9 – 11.3 for PM10 in November; 1.3 – 5.6 for PM2.5 and 1.3 – 5.6 for PM10 in February 2011; below 0.6 for PM2.5 and 0.1 – 0.9 for PM10 in April 2011. Among them, the highest OC/EC ratio occurred in November. In Yunlin costal area, the highest OC/EC ratio also occurred in November. In terms of the OE/EC ratio, the ratio was 0.3 – 0.7 for PM10 in March; 1.6 – 2.5 in May; 1.1 – 1.5 in August; and 2.7 – 8.2 in November. In Tainan metropolitan area, the concentration was 36 – 149μg/m³ in January 2009 with the highest value occurred at Tainan Observatory. In terms of OC/EC ratio for PM10, the ratio was 2.08 – 4.96 in January, 2.24 – 4.97 in March, and 0.90 – 2.84 in November. The highest OC/EC ratios occurred both in January and March. In terms of the OC/EC ratio, the ratio was 0.4 – 0.9 for PM2.5 and 0.4 – 0.7 for PM10 in September; 0.7 – 5.0 for PM2.5 and 4.9 – 11.3 PM10 in November; 1.3 – 5.6 for PM2.5 and 1.3 – 5.6 for PM10 in February 2011; below 0.6 for PM2.5 and 0.1 – 0.9 for PM10 in April 2011. Among them, the highest OC/EC ratio occurred November.
| Identifer | oai:union.ndltd.org:TW/099KSUT5515014 |
| Date | January 2011 |
| Creators | Chu-Ting Yang, 楊祝婷 |
| Contributors | Yi-Chyun Hsu, 許逸群 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 86 |
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