107年臺中市細懸浮微粒(PM2.5)成分分析及空品預報計畫
| 中文摘要 | 本計畫以PM2.5檢測調查及空品預報兩大工作為主，PM2.5檢測調查範圍包括環境大氣、固定污染源排放口及公車站。 環境大氣PM2.5組成分析顯示硫酸根占比22~26%，有機碳占比介於20~24%，元素碳占比5~9%，銨根占比8~9%，硝酸根占比5~7%，金屬成分占比5~7%。PM2.5組成在大里與后里兩地仍有其差異性。后里及大里站硫酸根占比最高，有機碳占比次之。 107年於臺中市轄區東側新增北屯、東勢及和平三座PM2.5自動監測站，以瞭解山區PM2.5污染情況，107年 4~9月份之監測數據顯示，本市東側PM2.5污染並未高於西側。值得注意的是，在10月份本市東面(北屯、東勢、和平)污染已高於西面。統計本市19處PM2.5監測站，以文山站超標日數最多。 本年度台中電廠1號機及7號機管道PM2.5檢測結果顯示，FPM濃度1.19~0.89 mg/Nm3，CPM濃度5.50~10.0 mg/Nm3。 電動公車進站期間PM2.5污染低於柴油公車，使用電動公車可抑制公車站PM2.5上升約4~9μg/m3，因此，建議對於搭乘人數多的公車站應優先將柴油公車改換電動公車載運。 臺中市107年3~10月分區空氣品質預報之平均準確度為56%，6月份因嚴重境外臭氧移入事件影響，導致有較大的預測誤差。 | ||
|---|---|---|---|
| 中文關鍵字 | PM2.5化學成分，管道過濾性微粒，管道凝結性微粒，PM2.5自動監測站，空氣品質預報 | ||
基本資訊
| 專案計畫編號 | 經費年度 | 107 | 計畫經費 | 13700 千元 | |
|---|---|---|---|---|---|
| 專案開始日期 | 2018/03/07 | 專案結束日期 | 2018/12/31 | 專案主持人 | 程萬里 |
| 主辦單位 | 臺中市政府環境保護局 | 承辦人 | 盧毓婷 | 執行單位 | 台灣綠仕科技有限公司 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | 定稿(全).pdf | 8MB |
Composition Analysis of PM2.5 and Air Quality Forecasting for Taichung City in 2018
| 英文摘要 | This study analyzes the chemical composition of PM2.5 with samples collected from the ambient environment, in-stacks and bus stops. The second focus of this study is air quality forecasting. The compositional analysis shows that the ambient PM2.5 consists of 22-26% sulfate, 20-24% organic carbon, 5-9% elemental carbon, 8~9% ammonium, 5-7% nitrate, and 5-7% metal element. The proportion of sulfate in Houli and Dali stations is the highest, followed by organic carbon. In 2018, three new PM2.5 automatic monitoring stations--in Beitun, Tungshih, and Heping--were set up to gain a better understanding of PM2.5 in the eastern mountainous region of the Taichung City jurisdiction. The monitoring data from April to September in 2018 shows that the PM2.5 pollution on the east side of the city is no higher than the west side. It is worth to note that in October, the eastern part of the city (Beitun, Tungshih, Heping) pollution is higher than the west. It is found that among the 19 stations, the Wenshan is the highest one for exceeding the standard level. Results of PM2.5 monitor of in-stack show that FPM is 0.89~1.19 mg/Nm3, CPM is 5.5~10.0 mg/Nm3 from Taichung Power Plant coal-fired boilers No. 1 and No. 7。 It shows that the PM2.5 pollution of the electric bus lower than that of the diesel one during the buses enter the station. The use of the electric bus can suppress the bus station PM2.5 from rising by about 4~9μg/m3. Therefore, we propose in the future to substitute electric buses for diesel ones to mitigate the traffic pollution. Due to migratory ozone from outside of the borders, results for June suffered higher levels of inaccuracy. The air quality forecast in Taichung subregions from March through October in 2018 down to an average accuracy of 56%. | ||
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| 英文關鍵字 | Composition of PM2.5，Filterable Particulate Matter (FPM)，Condensable Particulate Matter (CPM)，PM2.5 Automatic Monitoring Stations，Air Quality Forecast | ||