YLEPB-106-047

106

1,075 千元

2017/08/22

2018/08/21

李居昌

雲林縣環境保護局

周英尉

祥威環境科技股份有限公司

環境監測及檢測

揮發性有機物、氯乙烯、硫代二乙酸、開徑式霍式紅外光譜儀

VOCs, OP-FTIR, VCM, TdGA

陳怡安

07-7152892#514

annchen@leder.com.tw

本計畫針對離島工業區之氯乙烯監測，透過連續監測及配合多點次的採樣監測規劃，可分別瞭解污染物濃度之時間及空間變化，進而釐清可能污染來源，並可促使污染源進行相關管制及減量作業，以降低民眾的疑慮。 計畫內容包括紅外線連續監測作業、揮發性有機氣體採樣分析作業，及繫留氣球空氣污染物觀測與採樣檢測等相關作業。建立鄰近離島工業區敏感點氯乙烯環境監測濃度，並以FTIR架設警戒線，持續進行六輕廠周界空氣污染物的監控與追蹤，確保居民生活品質；逐月的揮發性有機氣體採樣分析，確認離島工業區影響程度，進而達到促使污染源改善；施放繫留氣球，建立工業區周界不同高層之氣象條件，利於解析空氣污染物於各高層之狀態。本計畫成果摘要如下所示： (一)紅外線連續監測作業 以紅外線連續監測儀器架設於許厝分校，針對工業區常見物種、毒性物種及TdGA代謝/干擾物種，進行長時間的監控。監控結果測得16個污染物，主要測得烷烯類，測得物種皆低於周界標準。除了氨來自於工業區外，主要測值可能受測線周邊畜牧業影響，其餘污染物多來自於工業區，又TdGA代謝/干擾物種測得氯乙烯及1,2-二氯乙烷，測得期間多為相關製程歲修時間。 (二)揮發性有機氣體採樣分析作業 逐月於工業區周界敏感點依據NIEA A715.15B執行揮發性有機氣體採樣分析，逐月檢測結果顯示測得物種數與六輕的距離之間大致上有一定趨勢，以距離六輕<5km 所測得的VOCs物種較多，出現頻率部分，以丙酮為最多檢測出之物種，而其他較為常見的VOCs物種依序為甲醇、丙烷、2-丁酮、甲苯、氯甲烷，又TdGA代謝/干擾物種測得氯乙烯、1,2-二氯乙烷及丙烯腈，測得位置配合氣象相對於採樣點主要來自工業區之方向。檢測數據結果統計廠區外檢測出最大濃度之物種為許厝分校所檢測出的甲醇321.0 ppb、廠區內VCM廠所檢測出甲醇113.0 ppb，測得物種皆低於周界標準。 (三)繫留氣球空氣污染物觀測與採樣檢測 施放繫留氣球，掌握六輕區域高層氣流的情況，以建立離島工業區不同高層氣象資訊，應用於污染物分析。施放12次繫留氣球，觀測結果顯示於500-700 m有氣流分層現象，無法以地面測站氣象資料代表煙流流向，黑碳地面濃度普遍較高，顯示有地面排放源，高空黑碳濃度變化不明顯，而臭氧在煙流通過之高度會有下降趨勢，可能與煙流產生滴定作用。 透過於工業區周圍敏感區域架設連續監測設備形成警戒線進行長時間線狀監控，並佈署網格狀採樣點及不同高度逐月檢測有害污染物濃度。監檢測結果主要測得烷烯類，各物種結合氣象數據顯示，測得TdGA代謝/干擾物濃度結合氣象數據顯示來自於工業區，且風速較低時，故推測可能為鄰近測點之工廠儲槽逸散或是來自工廠排放，又常於製程歲修期間測得製程相關物種，推測為歲修期間儲槽開蓋逸散或是清洗管道所排放。施放繫留氣球得知混合層高度，工業區中有效煙囪高度均在混合層高度以下，說明煙道排放之空氣污染物容易在垂直方向上擴散到混合層高度，擴散良好，故鄰近工業區敏感點檢測結果各污染物濃度皆遠低於周界標準。

揮發性有機物、氯乙烯、硫代二乙酸、開徑式霍式紅外光譜儀

106 年度雲林縣離島工業區氯乙烯排放監(檢)測與調查計畫.pdf

9MB

結案報告

2019/3/1 上午 12:00:00

This project is aimed at the monitoring of vinyl chloride in the outlying island industrial zone. Through continuous monitoring and multi-point sampling and monitoring plan, it can be separately understood the time and space changes of pollutant concentration, and then clarified possible sources of pollution, and promote pollution sources. Eventually, controlling and reduce pollutant source to comfort public concerns of pollutant issues. The project was implemented on August 22nd, 2017. It includes infrared continuous monitoring, sampling and analysis of volatile organic gases, and related operations such as air pollutant observation and sampling detection of captive balloons. Through the effective implementation of this project, the monitoring concentration of vinyl chloride in sensitive areas of the outlying island industrial zone has been established, and the warning line has been set up by FTIR to continuously monitor and track the air pollutants in the perimeter of No. 6 Naphtha Cracker Complex to ensure the quality of life of residents; The sampling analysis of volatile organic gases in the month confirms the level of influence of the outlying island industrial area, and then promotes the improvement of pollution sources; the application of captive balloons to establish meteorological conditions at different upper levels of the industrial zone is conducive to the analysis of the state of air pollutants at various high levels. As of August 21st, 2018, the summary of the results of this project is as follows: 一、Infrared continuous monitoring As of 269 days of the monitoring at Qiaotou Primary School from August 21st, 2018, Xinji line is adjacent to the perimeter of the No. 6 Naphtha Cracker Complex. It is obviously affected by the industrial zone that 16 substances were measured those were 1,3-butadiene and ethylene, Ethyl, n-butane, difluoromethane, propylene, propane, methanol, ammonia, , vinyl chloride, n-heptane, styrene, m-Xylene, o-Xylene, p-Xylene, methylene chloride and 1,2- Dichloroethane all of which have not exceeded the perimeter Standard. During the monitoring period, all pollutants had not exceeded the perimeter standard, and no abnormally high values occurred. TdGA metabolite/interference substance such as vinyl chloride was measured at the Xinji campus during the monitoring period. 二、Volatile organic gas sampling analysis Every month, in the environmental hotspots and sensitive points that may be affected by the outlying islands industrial area, the volatile organic compounds were sampled and analyzed monthly. Eleven times of sampling and analysis were completed as of the end of August. TdGA metabolites/inference were measured 1,2-dichloroethane, vinyl chloride and acrylo nitrile during the monitoring period. To resulting compounds with the highest concentration detected from the outside of the plant area was 321.0 ppb of methanol detected by Qiaotou Primary School and 113.0 ppb of methanol detected by VCM plant in the zone. The measured species had not exceed the perimeter standard.nt in the zone. The measured species had not exceed the perimeter standard. 三、Tethered balloon for air pollutant observation and sampling detection The mooring balloon has been cast for the high-level airflow in the No. 6 Naphtha Cracker Complex that is mastered to establish different high-level meteorological information for pollutants in the outlying island industrial zone. In 12 times of observations, there is a phenomenon of airflow stratification at a height of 500-750m. The lower layer is the wind direction from southwest to northwest, and the upper layer is generally southerly. The wind direction generally turns with altitude, and the wind direction observation from the ground is difficult to represent 150-250m and above of wind direction

VOCs, OP-FTIR, VCM, TdGA