EPA-107-1602-02-01

107

2,080 千元

2018/03/31

2018/12/31

王介亨

環檢所

陳正穎

錦雲技術開發有限公司

環境監測及檢測

石化工業、排放管道、有機空氣污染物、有害空氣污染物

Petrochemical Industry, Discharge Pipes, Organic Air Pollutants, Hazardous Air Pollutants

王介亨

03-4205633#

chwang1110@gmail.com

本計畫針對排放管道中1,4-二氧陸圜、1,3-丁二烯、醋酸乙烯酯、乙腈、苯甲氯、1,2-二溴乙烷、溴甲烷、氯甲烷、1,1-二氯乙烯、1,1,2-三氯乙烷、氯丙烯及1,4-二氯苯等空氣污染物之調查技術評估及開發。執行之初，曾嘗試以採樣袋採樣經由GC-FID分析上述12項空氣污染物，然而由於12項空氣污染物的特性不一，其中沸點範圍(-24~179 ℃)與飽和蒸氣壓(3796~1.03 mmHg) 差異甚大，而1,4-二氧陸圜及乙腈因在水中溶解性高，在排放管道中可能傾向以氣態、霧滴或粒狀物等型態存在，故此12種空氣污染物在採樣與分析時上必須設計合適的分析技術進行。 執行成果方面：開發完成1,3-丁二烯及醋酸乙烯酯以採樣袋採樣經由GC-FID分析方法；氯甲烷、溴甲烷、1,1-二氯乙烯、氯丙烯、1,1,2-三氯乙烷、1,2-二溴乙烷、苯甲氯及1,4-二氯苯等8項空氣污染物以採樣袋採樣經由GC-ECD分析方法；1,4-二氧陸圜和乙腈以試劑水等速吸引(10L/min)的方式採樣再以GC-FID進行分析。12種空氣污染物的檢測技術建立，包括方法之品保規範，包括檢量線、偵測極限、樣品保存、精密度、準確度等，並完成技術建議、實場測試和檢測技術擴散。 本研究針對12項目標物分別建立高、低濃度兩組檢量線，第一組濃度區間為0.67~10 ppm，檢量線結果，R2 =0.993~0.999；第二組濃度區間為3~50 ppm，檢量線結果，R2 =0.997~0.999，經預估確認後得12項目標物之偵測極限介於0.0128~0.527 ppm。樣品保存方面，利用採樣袋採樣之10項目標物中，除1,4-二氯苯保存期限僅4小時外，其餘9項目標物保存期限介於1~2天，1,4-二氧陸圜和乙腈利用試劑水等速吸引方式採樣，保存期限可達9天。精密度與準確度結果，12項目標物RSD值介於1.5~10.9%，回收率介於96.6~106.1%。 政策面執行上，本計畫所開發的採樣分析技術可對於石化業、電子業、化工業等產業使用12種污染物時提供排放管道中檢測技術。

石化工業、排放管道、有機空氣污染物、有害空氣污染物

107.12.18定稿-排放管道中1,4-二氧陸圜等12種化合物調查技術開發-期末報告(定稿).pdf

6MB

2019/1/1 上午 12:00:00

The main objective of this project is to develop sampling and analytical method for selected organic air pollutants (i.e., 1,4-dioxane, 1,3-butadiene, vinyl acetate, acetonitrile, benzyl chloride, 1,2-dibromoethane, bromomethane, chloromethane, 1,1-dichloroethylene, 1,1,2-trichloroethane, allyl chloride and 1,4-dichlorobenzene) in flue gas from stacks and provide testing methods for the Environmental Analysis Laboratory, EPA. In the early stage, we planned to analyze all the target organic air pollutants by combining sampling bags and gas chromatography - flame ionization detection (GC-FID). However, due to the large difference in boiling points from -24~179°C and volatility (vapor pressure from 3796 ~1.03 mmHg), as well as the co-existence in different phases of gas, mist or particulate matter in flue gas, we had to divide the target compouds into three separate groups with more tailored methods for each. For the first group of 8 compounds (benzyl chloride, 1,2-dibromoethane, bromomethane, chloromethane, 1,1-dichloroethylene, 1,1,2-trichloroethane, allyl chloride and 1,4-dichlorobenzene ether), they were analyzed by combining sampling bags and GC-electron capture detection (GC-ECD) for analysis. 1,3-butadiene and vinyl acetate formed a second group and were analysis by sampling bags and GC-FID analysis. The third group of highly dissolvable compounds of 1,4-dioxane and acetonitrile were sampled by impingers, followed by GC-FID analysis To test for linearity and construct calibration curves, we further divided the 12 target compounds into two concentration ranges of low and high. For the high range from 0.67 ~ 10 ppm, the R2 = 0.993~0.999, whereas for the low range from 3~50 ppm, the R2 = 0.997~0.999, both ranges showing very high linearity. The detection limits of the 12 target analytes are in the range 0.0128~0.527 ppm. The sample preservation test showed that for the 10 analytes using sampling bags except for 1,4-dioxane, which has a very short preservation time period no longer than 4 hours, the other 9 analytes showed much longer preservation time of 1~2 days. 1,4-dioxane and acetonitrile are water soluble and thus can be preserved in water after impinge sampling with a preservation time period longer than 9 days. The precision for the 12 target analytes are in the range1.5~10.9%. The recoveries are in the range 96.6~106.1%, demonstrating high accuracy. Having determined the suitability of the three analytical methods, criteria of quality assurance for the methods were then assessed, which include accuracy, detection limits, precision and linearity.

Petrochemical Industry, Discharge Pipes, Organic Air Pollutants, Hazardous Air Pollutants