111

3,100 千元

固定污染源管制

2022/02/16

2022/12/31

王永立

環檢所

黃韋中

工業技術研究院

大氣空氣

排放管道、周界空氣、丙二醇甲醚、丙二醇甲醚醋酸酯、二乙二醇單丁醚、二丙二醇甲醚、乙二醇丁醚、乙二醇乙醚、乙二醇乙醚醋酸酯、乙二醇甲醚、乙二醇甲醚醋酸酯

stack, ambient air, propylene glycol methyl ether, propylene glycol methyl ether acetate, diethylene glycol butyl ether, diethylene glycol methyl ether, 2-butoxyethanol, 2-ethoxyethanol, ethylene glycol monoethyl ether acetate, 2-methoxyethanol, 2-methoxyethyl acetate

王永立

06-3636796#

ywang@itri.org.tw

本計畫目標為開發排放管道及周界中，丙二醇甲醚、丙二醇甲醚醋酸酯、二乙二醇單丁醚、二丙二醇甲醚、乙二醇丁醚、乙二醇乙醚、乙二醇乙醚醋酸酯、乙二醇甲醚、乙二醇甲醚醋酸酯等有機空氣污染物調查技術開發。針對排放管道及周界空氣中之目標化合物，使用甲醇吸收液採樣後，再以氣相層析質譜儀 (GC/MS) 或氣相層析火焰離子化偵測器 (GC/FID) 分析。 本計畫針對丙二醇甲醚、丙二醇甲醚醋酸酯、二乙二醇單丁醚、乙二醇丁醚、乙二醇乙醚、乙二醇乙醚醋酸酯、乙二醇甲醚、乙二醇甲醚醋酸酯，使用同時具定性及定量功能的GC/MS分析。而二丙二醇甲醚 (CAS NO. 34590-94-8) 是由四個同分異構物 (CAS NO. 13429-07-7, CAS NO. 20324-32-7, CAS NO. 13588-28-8, CAS NO. 55956-21-3) 所組成的混合物，每個同分異構物具有兩個不對稱碳原子 (asymmetric carbon)，造成每個同分異構物皆具有四種組態異構物 (configurational isomers)。因此不同來源的二丙二醇甲醚標準品，可能因製程不同，具有不同的同分異構物組成比例，進而出現不同層析峰。根據OSHA 101，二丙二醇甲醚的定量，可使用GC/FID分析，再由加總各同分異構物的層析峰面積完成，因為各同分異構物的層析峰積分面積在GC/FID的Response是等量的，因此本計畫針對二丙二醇甲醚的分析，皆使用GC/FID進行。 根據實驗結果，排放管道方面，丙二醇甲醚、丙二醇甲醚醋酸酯、二乙二醇單丁醚、二丙二醇甲醚、乙二醇丁醚、乙二醇乙醚、乙二醇乙醚醋酸酯、乙二醇甲醚、乙二醇甲醚醋酸酯之方法偵測極限 (採氣量100 L，5 L/min × 20 min，等速吸引採樣)，分別為0.038 ppmv、0.027 ppmv、0.024 ppmv、0.018 ppmv、0.018 ppmv、0.040 ppmv、0.024 ppmv、0.054 ppmv、及0.029 ppmv。周界空氣方面，丙二醇甲醚、丙二醇甲醚醋酸酯、二乙二醇單丁醚、二丙二醇甲醚、乙二醇丁醚、乙二醇乙醚、乙二醇乙醚醋酸酯、乙二醇甲醚、乙二醇甲醚醋酸酯之方法偵測極限 (採氣量60 L，1 L/min × 60 min)，分別為31.9 ppbv、21.4 ppbv、20.1 ppbv、13.9 ppbv、15.5 ppbv、33.5 ppbv、20.1 ppbv、47.2 ppbv、及25.7 ppbv。而丙二醇甲醚 (GC/MS) 之準確度為108.11 %，精密度為2.51 % (@5 mg/L) 以及準確度為96.79 %，精密度為3.93 % (@2 mg/L)；丙二醇甲醚醋酸酯 (GC/MS) 之準確度為103.91 %，精密度為2.17 % (@5 mg/L) 以及準確度為100.36 %，精密度為3.14 % (@2 mg/L)；二乙二醇單丁醚 (GC/MS) 之準確度為99.43 %，精密度為3.49 % (@5 mg/L) 以及準確度為94.86 %，精密度為4.13 % (@2 mg/L)；二丙二醇甲醚 (GC/FID) 之準確度為99.06 %，精密度為2.92 % (@5 mg/L) 以及準確度為99.29 %，精密度為3.00 % (@2 mg/L)；乙二醇丁醚 (GC/MS) 之準確度為105.80 %，精密度為2.18 % (@5 mg/L) 以及準確度為96.71 %，精密度為4.14 % (@2 mg/L)；乙二醇乙醚 (GC/MS) 之準確度為99.23 %，精密度為2.40 % (@5 mg/L) 以及準確度為96.14 %，精密度為4.08 % (@2 mg/L)；乙二醇乙醚醋酸酯 (GC/MS) 之準確度為104.00 %，精密度為2.52 % (@5 mg/L) 以及準確度為100.79 %，精密度為3.91 % (@2 mg/L)；乙二醇甲醚 (GC/MS) 之準確度為109.40 %，精密度為3.12 % (@5 mg/L) 以及準確度為97.71 %，精密度為3.20 % (@2 mg/L)；乙二醇甲醚醋酸酯 (GC/MS) 之準確度為102.03 %，精密度為1.97 % (@5 mg/L) 以及準確度為99.43 %，精密度為2.99 % (@2 mg/L。 本計畫亦運用上述調查技術開發之採樣及分析條件，完成國內排放管道或周界空氣至少6場次現場調查。此外，本計畫在10月及11月舉行2場次技術擴散課程，並提出調查技術草案。

排放管道、周界空氣、丙二醇甲醚、丙二醇甲醚醋酸酯、二乙二醇單丁醚、二丙二醇甲醚、乙二醇丁醚、乙二醇乙醚、乙二醇乙醚醋酸酯、乙二醇甲醚、乙二醇甲醚醋酸酯

FY111環檢所成果報告(定稿本).pdf

17MB

2023/1/30 上午 12:00:00

The objective of this project was to develop sampling and analytical methods for organic air pollutants, including propylene glycol methyl ether (PGME), propylene glycol methyl ether acetate (PGMEA), diethylene glycol butyl ether (BDG), diethylene glycol methyl ether (DPM), 2-butoxyethanol, 2-ethoxyethanol, ethylene glycol monoethyl ether acetate (EGEEA), 2-methoxyethanol, and 2-methoxyethyl acetate (EGMEA) in stacks and ambient air. All the target compounds in stacks or ambient air were sampled using methanol and then analyzed by GC/MS or GC/FID. In this project, PGME, PGMEA, BDG, 2-butoxyethanol, 2-ethoxyethanol, EGEEA, 2-methoxyethanol, and EGMEA were analyzed using GC/MS with both qualitative and quantitative analyses. DPM (CAS NO. 34590-94-8) is mixture of 4 structural isomers (CAS NO. 13429-07-7, CAS NO. 20324-32-7, CAS NO. 13588-28-8, CAS NO. 55956-21-3). Each isomer has two asymmetrical carbon atoms, and this each isomer has 4 configurational isomers. Therefore, DPM standard products from different sources may have different isomer ratios due to different manufacturing processes, and thus appear different chromatographic peaks. According to OSHA 101, quantification of DPM can be done by summing the peak areas of the isomers using GC/FID, since the response of all the isomers of DPM are identical. All DPM samples in this project were analyzed by GC/FID. Based on experimental results, as for stacks, the detection limits of PGME, PGMEA, BDG, DPM, 2-butoxyethanol, 2-ethoxyethanol, EGEEA, 2-methoxyethanol, and EGMEA were 0.038 ppmv, 0.027 ppmv, 0.024 ppmv, 0.018 ppmv, 0.018 ppmv, 0.040 ppmv, 0.024 ppmv, 0.054 ppmv and 0.029 ppmv, respectively (sampling volume was 100L, 5 L/min × 20 min, isokinetic sampling). As for ambient air, the detection limits of PGME, PGMEA, BDG, DPM, 2-butoxyethanol, 2-ethoxyethanol, EGEEA, 2-methoxyethanol, and EGMEA were 31.9 ppbv, 21.4 ppbv, 20.1 ppbv, 13.9 ppbv, 15.5 ppbv, 33.5 ppbv, 20.1 ppbv, 47.2 ppbv, and 25.7 ppbv, respectively (sampling volume was 60L, 1 L/min × 60 min, constant flow). The accuracy and precision of PGME (using GC/MS) were 108.112.51% (@5 mg/L), and 96.793.93% (@2 mg/L). The accuracy and precision of PGMEA (using GC/MS) were 103.912.17% (@5 mg/L), and 100.363.14% (@2 mg/L). The accuracy and precision of BDG (using GC/MS) were 99.433.49% (@5 mg/L), and 94.864.13% (@2 mg/L). The accuracy and precision of DPM (using GC/FID) were 99.062.92% (@5 mg/L), and 99.293.00% (@2 mg/L). The accuracy and precision of 2-butoxyethanol (using GC/MS) were 105.802.18% (@5 mg/L), and 96.714.14% (@2 mg/L). The accuracy and precision of 2-ethoxyethanol (using GC/MS) were 99.232.40% (@5 mg/L), and 96.144.08% (@2 mg/L). The accuracy and precision of EGEEA (using GC/MS) were 104.002.52% (@5 mg/L), and 100.793.91% (@2 mg/L). The accuracy and precision of 2-methoxyethanol (using GC/MS) were 109.403.12% (@5 mg/L), and 97.713.20% (@2 mg/L). The accuracy and precision of EGMEA (using GC/MS) were 102.031.97% (@5 mg/L), and 99.432.99% (@2 mg/L). The sampling and analytical methods developed in this project were proven to be practical by surveying at least 6 field samplings (stacks or ambient air). Besides, two technical communication seminars were taken place in September and October. All the study results were reported in the technical drafts for EPA’s reference.

stack, ambient air, propylene glycol methyl ether, propylene glycol methyl ether acetate, diethylene glycol butyl ether, diethylene glycol methyl ether, 2-butoxyethanol, 2-ethoxyethanol, ethylene glycol monoethyl ether acetate, 2-methoxyethanol, 2-methoxyethyl acetate