環保專案成果報告查詢系統

專案計畫編號	EPA-99-FA11-03-A097
經費年度	099
計畫經費	4,200 千元
專案開始日期	2010/02/08
專案結束日期	2010/12/31
專案主持人	許桂榮
主辦單位	監資處
承辦人	曾志評
執行單位	中央大學大氣物理研究所
專案分類	環境資訊系統
中文關鍵字	長程傳輸;大氣汞;戴奧辛；氣膠；水溶性離子；金屬元素
英文關鍵字	long-range transport, atmospheric mercury, dioxins, aerosol, water-soluble ions, metal elements.
協同主持人	李崇德;紀凱獻
共同主持人
計畫聯絡人	謝金村
計畫聯絡電話	03-4227151#65541
計畫聯絡信箱	sinchen0911@msn.com

中文摘要	我國位居亞洲環流系統的下風處，上游東亞大陸或東南亞鄰近國家所排放之污染物可隨盛行季風與高層西風傳送進入我國疆域，影響空氣品質、環境生態與人體健康，因此環保署規劃此計畫以達成下列目標：(1)參與區域性背景空氣品質監測，建立國際合作監測機制；(2) 充實長程傳輸空氣污染物監測資訊，評估對我國之影響。執行「七海大氣科學研究計畫(7-SEAS)」之先期監測計畫：「東沙實驗(Dongsha Experiment)」為本研究重點工作項目，此實驗由我國主導進行，主要實驗地點為東沙島，國內學術研究機構包含中央大學與環保署在內共計有15所參與，國外參與單位主要是美國航空暨太空總署(NASA)與Naval Research Lab (NRL)，以及越南與泰國學術研究機構。3-6月東沙實驗進行期間除環保署監測車與NASA COMMIT氣膠監測貨櫃在東沙島持續進行觀測，還進行兩次密集觀測(3/13-20與4/10-20)，密集觀測期間所有研究團隊同步進行觀測。實驗觀測項目包括氣象、探空、輻射、大氣氣膠物理與化學、一般空氣污染物(如CO, SO2, O3)、有害空氣污染物(如Hg, Dioxins, PAHs)、揮發性有機化合物以及溫室效應氣體。實驗完成後於6月中旬辦理成果發表會，邀請七海大氣科學參與國家人員及專家出席，報告監測初步成果。本研究另一重點工作為在本島與離島背景測站就有害空氣污染物(大氣汞與戴奧辛)進行監測，2010年在馬祖、竹子山、鹿林山、恆春、東沙及南沙太平島等地共進行21次密集觀測，每次密集觀測至少持續7天，進行大氣汞與戴奧辛之採樣分析。大氣汞濃度介於1.09與4.34 ng m-3，戴奧辛濃度介於0.22與184 fg-I-TEQ m-3；兩污染物之濃度皆出現季節性變化，通常夏季濃度較低，而冬、春季濃度較高，此與氣團來源之季節性變化有關，夏季西南季風帶來較乾淨的海洋性氣團，大氣汞與戴奧辛濃度偏低，而隨東北季風而來的大陸性氣團之有害物質濃度則偏高，顯示長程傳輸的影響。此外，本研究還採樣鹿林山大氣氣膠(PM2.5與PM2.5-10)並分析化學組成，包含水溶性離子與金屬元素。2010年分析結果顯示硫酸根與硝酸根離子為主要陰離子，銨離子為主要陽離子，鐵、鋁、鎂為主要金屬元素，而鉛則是最常偵測到的有害金屬元素。在春季東南亞生質燃燒期間，大氣氣膠鉀離子濃度明顯升高。
中文關鍵字	長程傳輸;大氣汞;戴奧辛；氣膠；水溶性離子；金屬元素

中文摘要

我國位居亞洲環流系統的下風處，上游東亞大陸或東南亞鄰近國家所排放之污染物可隨盛行季風與高層西風傳送進入我國疆域，影響空氣品質、環境生態與人體健康，因此環保署規劃此計畫以達成下列目標：(1)參與區域性背景空氣品質監測，建立國際合作監測機制；(2) 充實長程傳輸空氣污染物監測資訊，評估對我國之影響。執行「七海大氣科學研究計畫(7-SEAS)」之先期監測計畫：「東沙實驗(Dongsha Experiment)」為本研究重點工作項目，此實驗由我國主導進行，主要實驗地點為東沙島，國內學術研究機構包含中央大學與環保署在內共計有15所參與，國外參與單位主要是美國航空暨太空總署(NASA)與Naval Research Lab (NRL)，以及越南與泰國學術研究機構。3-6月東沙實驗進行期間除環保署監測車與NASA COMMIT氣膠監測貨櫃在東沙島持續進行觀測，還進行兩次密集觀測(3/13-20與4/10-20)，密集觀測期間所有研究團隊同步進行觀測。實驗觀測項目包括氣象、探空、輻射、大氣氣膠物理與化學、一般空氣污染物(如CO, SO2, O3)、有害空氣污染物(如Hg, Dioxins, PAHs)、揮發性有機化合物以及溫室效應氣體。實驗完成後於6月中旬辦理成果發表會，邀請七海大氣科學參與國家人員及專家出席，報告監測初步成果。本研究另一重點工作為在本島與離島背景測站就有害空氣污染物(大氣汞與戴奧辛)進行監測，2010年在馬祖、竹子山、鹿林山、恆春、東沙及南沙太平島等地共進行21次密集觀測，每次密集觀測至少持續7天，進行大氣汞與戴奧辛之採樣分析。大氣汞濃度介於1.09與4.34 ng m-3，戴奧辛濃度介於0.22與184 fg-I-TEQ m-3；兩污染物之濃度皆出現季節性變化，通常夏季濃度較低，而冬、春季濃度較高，此與氣團來源之季節性變化有關，夏季西南季風帶來較乾淨的海洋性氣團，大氣汞與戴奧辛濃度偏低，而隨東北季風而來的大陸性氣團之有害物質濃度則偏高，顯示長程傳輸的影響。此外，本研究還採樣鹿林山大氣氣膠(PM2.5與PM2.5-10)並分析化學組成，包含水溶性離子與金屬元素。2010年分析結果顯示硫酸根與硝酸根離子為主要陰離子，銨離子為主要陽離子，鐵、鋁、鎂為主要金屬元素，而鉛則是最常偵測到的有害金屬元素。在春季東南亞生質燃燒期間，大氣氣膠鉀離子濃度明顯升高。

中文關鍵字

長程傳輸;大氣汞;戴奧辛；氣膠；水溶性離子；金屬元素

類型	檔名	檔案大小	說明	最新版公開日期
期末報告	EPA-99-FA11-03-A097.pdf.pdf	13MB		2011/3/1 上午 12:00:00

摘要	Taiwan is located in the downwind region of the Asian circulation system. Air pollutants emitted in the upwind regions, such as the East Asia continent and the Indochina peninisula, can thus be transported to Taiwan via prevailing monsoon and high-altitude westerlies to influence air quality, environment, ecosystems, and human health. Accordingly, Taiwan EPA drew up this project to achieve the following goals: (1) to participate regional background air quality monitoring and establish a platform for international collaboration in monitoring; (2) to replenish monitoring information of long-range transported air pollutants and assess its influence to Taiwan. Dongsha Experiment, the preliminary monitoring study of 7-SEAS led by Taiwan, was one of the major tasks of this project. Dongsha Island was the principal experimental site. Overall, there were 15 domestic research groups, led by National Central University and Taiwan EPA, participating this experiment. U.S. NASA and Naval Research Lab (NRL), Vietnam, and Thailand were the main foreign participants. During March and June, a Taiwan EPA mobile monitoring vehicle and a NASA COMMIT were placed in Dongsha to conduct continuous monitoring. Additionally, two IOPs (3/13-20 and 4/10-20) were operated with all participating research groups conducting measurements simultaneously. Parameters monitored include meteorology, sounding, radiation, atmospheric aerosol physic and chemistry, common air pollutants (e.g. CO, SO2, O3), hazardous air pollutants (e.g. Hg, dioxins, PAHs), VOCs, and greenhouse gases. A data workshop was held in mid-June to discuss preliminary results of the Dongsha Experiment. Another important task of this project was to monitor hazardous air pollutants (atmospheric Hg and dioxins) at background sites in Taiwan and remote islands, including Mazu, Mt. Bamboo, Mt. Lulin, Hengchun, Dongsha, and Nansha. A total of 21 IOPs were conducted and each IOP lasted for at least 7 days. Concentrations of atmospheric Hg and dioxins were 1.09-4.34 ng m-3 and 0.22 and 184 fg-I-TEQ m-3, respectively. Concentrations of both pollutants showed seasonal variations, usually lower in summer but higher in winter and spring. The seasonal variation in pollutant concentrations was related to the seasonal variation in air mass origins. In summer, the prevailing southwest monsoon brought clean marine air masses with lower concentrations of mercury and dioxins. On the other hand, in winter and spring the prevailing northeast monsoon brought continental air masses, which contained higher HAPs concentrations, indicating the influence of long-range transport. This project also investigated the chemical composition, including water-soluble ions and metal elements, of Mt. Lulin aerosol samples (PM2.5 and PM2.5-10). In 2010, SO42- and NO3- were the major anions, while NH4+ was the major cation. Fe, Al, and Mg were the major metal elements. Pb was the most frequently detected hazardous metal element. Concentrations of K+ increased significantly during the Southeast Asian biomass burning season in spring.
英文關鍵字	long-range transport, atmospheric mercury, dioxins, aerosol, water-soluble ions, metal elements.

摘要

Taiwan is located in the downwind region of the Asian circulation system. Air pollutants emitted in the upwind regions, such as the East Asia continent and the Indochina peninisula, can thus be transported to Taiwan via prevailing monsoon and high-altitude westerlies to influence air quality, environment, ecosystems, and human health. Accordingly, Taiwan EPA drew up this project to achieve the following goals: (1) to participate regional background air quality monitoring and establish a platform for international collaboration in monitoring; (2) to replenish monitoring information of long-range transported air pollutants and assess its influence to Taiwan. Dongsha Experiment, the preliminary monitoring study of 7-SEAS led by Taiwan, was one of the major tasks of this project. Dongsha Island was the principal experimental site. Overall, there were 15 domestic research groups, led by National Central University and Taiwan EPA, participating this experiment. U.S. NASA and Naval Research Lab (NRL), Vietnam, and Thailand were the main foreign participants. During March and June, a Taiwan EPA mobile monitoring vehicle and a NASA COMMIT were placed in Dongsha to conduct continuous monitoring. Additionally, two IOPs (3/13-20 and 4/10-20) were operated with all participating research groups conducting measurements simultaneously. Parameters monitored include meteorology, sounding, radiation, atmospheric aerosol physic and chemistry, common air pollutants (e.g. CO, SO2, O3), hazardous air pollutants (e.g. Hg, dioxins, PAHs), VOCs, and greenhouse gases. A data workshop was held in mid-June to discuss preliminary results of the Dongsha Experiment. Another important task of this project was to monitor hazardous air pollutants (atmospheric Hg and dioxins) at background sites in Taiwan and remote islands, including Mazu, Mt. Bamboo, Mt. Lulin, Hengchun, Dongsha, and Nansha. A total of 21 IOPs were conducted and each IOP lasted for at least 7 days. Concentrations of atmospheric Hg and dioxins were 1.09-4.34 ng m-3 and 0.22 and 184 fg-I-TEQ m-3, respectively. Concentrations of both pollutants showed seasonal variations, usually lower in summer but higher in winter and spring. The seasonal variation in pollutant concentrations was related to the seasonal variation in air mass origins. In summer, the prevailing southwest monsoon brought clean marine air masses with lower concentrations of mercury and dioxins. On the other hand, in winter and spring the prevailing northeast monsoon brought continental air masses, which contained higher HAPs concentrations, indicating the influence of long-range transport. This project also investigated the chemical composition, including water-soluble ions and metal elements, of Mt. Lulin aerosol samples (PM2.5 and PM2.5-10). In 2010, SO42- and NO3- were the major anions, while NH4+ was the major cation. Fe, Al, and Mg were the major metal elements. Pb was the most frequently detected hazardous metal element. Concentrations of K+ increased significantly during the Southeast Asian biomass burning season in spring.

英文關鍵字

long-range transport, atmospheric mercury, dioxins, aerosol, water-soluble ions, metal elements.