台南科學工業園區、雲林沿海地區與台南都會區大氣懸浮微粒中碳成份之比較

Comparative carbon content in airborne suspended particulates in Tainan Science and Industrial Parks,Yunlin coastal area and Tainan metropolitan area

楊祝婷(Chu-Ting Yang)

指導教授 ： 許逸群

崑山科技大學/工程學院/環境工程研究所/碩士(2011年)

https://doi.org/10.6828/KSU.2011.00051

摘要

大氣懸浮微粒中含碳成分來源複雜，細粒徑微粒大都是由燃燒過程產生，如機動車輛、柴油車等交通工具、燃料油、煤的燃燒排放出來，再經由光化學反應則產生二次衍生氣膠。
本研究從2010年9月起至2011年6月止探討台南科學園區周遭大氣中懸浮微粒移動性及擴散性汙染源含碳成分排放特性進行PM2.5和PM10碳成分特性分析，利用OC與EC比值之大小推算二次衍生性氣膠與原生性汙染源(新鮮汽機車尾氣)的比例。近而與雲林沿海地區及南市都會區，比較三個地區各別的差異性。
結果顯示，台南科學園區9月PM10濃度為45-59μg/m³之間，以大社國小為59μg/m³最高；11月PM10濃度為78-122μg/m³之間，以大社國小為122μg/m³最高；100年02月濃度為96-119μg/m³之間，以南安國小為119μg/m³最高；100年04月濃度為79-97μg/m³之間，以豐華社活動中心為97μg/m³最高。發現11月的濃度比其他的還高。OC/EC比值9月PM2.5為0.4-0.9，PM10為0.4-0.7；11月PM2.5為0.7-5.0，PM10為4.9-11.3；100年02月PM2.5為1.3-5.6，PM10為1.3-5.6；100年04月PM2.5為0.6以下，PM10為0.1-0.9，OC/EC比值較大為11月。雲林沿海地區OC/EC比值高也是11月。雲林沿海地區PM10 3月OC/EC比值介於0.3-0.7之間；5月OC/EC比值介於1.6-2.5之間；8月OC/EC比值介於1.1-1.5之間；而11月OC/EC比值則是介於2.7-8.2之間。南市都會區98年1月濃度36-149μg/m³，以台南測站較高；OC/EC比值1月PM10為2.1-4.96，3月PM10為2.2-4.97，11月PM10為0.9-2.8；OC/EC比值3月較高。OC/EC比值9月PM2.5為0.4-0.9，PM10為0.4-0.7；11月PM2.5為0.7-5，PM10為4.9-11.3；100年02月PM2.5為1.3-5.6，PM10為1.3-5.6；100年04月PM2.5為0.6以下，PM10為0.1-0.9。

關鍵字

PM2.5 ； PM10 ； OC ； EC ； 二次衍生氣膠

並列摘要

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.

並列關鍵字

PM2.5 ； PM10 ； OC ； EC ； secondary aerosol

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