EPA154110004

110

3,110 千元

固定污染源管制

2021/01/21

2021/12/31

王永立

環檢所

陳重方

工業技術研究院

大氣空氣

排放管道、周界空氣、有害空氣污染物

stack, ambient air, hazardous air pollutants

李彥芬

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聯胺、次乙亞胺、三氯乙酸、2,4-二異氰酸甲苯等有害空氣污染物之調查技術。針對排放管道及周界空氣中之聯胺，使用含苯甲醛的甲醇吸收液採樣後 (衍生化反應)，再以HPLC/UV或LC/MS/MS分析；次乙亞胺，使用Folin’s reagent採樣後 (衍生化反應)，再以LC/MS/MS分析；三氯乙酸，使用甲醇吸收液採樣後，再以LC/MS/MS分析；2,4-二異氰酸甲苯，使用含1-(2-pyridyl)piperazine的甲苯吸收液採樣後 (衍生化反應)，再以LC/MS/MS分析。 根據實驗結果，排放管道方面，聯胺及三氯乙酸之方法偵測極限 (採氣量100 L，5 L/min × 20 min，等速吸引採樣)，分別為3.8×10-4 ppmv及1.422×10-3 ppmv；次乙亞胺及2,4-二異氰酸甲苯之方法偵測極限 (採氣量10 L，1 L/min × 10 min，定流率採樣)，分別為3.4×10-3 ppmv及4.96×10-5 ppmv。周界空氣方面，聯胺、次乙亞胺、三氯乙酸、2,4-二異氰酸甲苯之方法偵測極限 (採氣量60 L，1 L/min × 60 min)，分別為5.7×10-3 ppbv、0.296 ppbv、1.147 ppbv及4.0×10-3 ppbv。而聯胺 (HPLC/UV) 之準確度為95.99 %，精密度為3.74 % (@10 mg/L)；聯胺 (LC/MS/MS) 之準確度為103.9 %，精密度為4.3 % (@10 g/L)；次乙亞胺 (LC/MS/MS) 之準確度為96.1 %，精密度為2.1 % (@200 g/L) 以及準確度為104.6 %，精密度為2.9 % (@10 g/L)；三氯乙酸 (LC/MS/MS) 之準確度為101.1 %，精密度為2.2 % (@150 g/L) 以及準確度為99.7 %，精密度為4.0 % (@100 g/L)；2,4-二異氰酸甲苯 (LC/MS/MS) 之準確度為100.9 %，精密度為3.7 % (@20 g/L) 以及準確度為108.0 %，精密度為4.0 % (@5 g/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4場次現場調查。此外，本計畫在9月及10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、有害空氣污染物

FY110環檢所期末報告(定稿本).pdf

11MB

2022/1/1 上午 12:00:00

The objective of this project was to develop sampling and analytical methods for hazardous air pollutants, including hydrazine, ethyleneimine, trichloroacetic acid, and toluene-2,4-diisocyanate in stacks and ambient air. Hydrazine was sampled using methanol solvent with benzaldehyde as derivatizing agent (derivatization method) and then analyzed by HPLC/UV or LC/MS/MS. Ethyleneimine was sampled using folin’s reagent (derivatization method) and then analyzed by LC/MS/MS. Trichloroacetic acid was sampled using methanol solvent and then analyzed by LC/MS/MS. Toluene-2,4-diisocyanate was sampled using toluene solvent with 1-(2-pyridyl)piperazine as derivatizing agent (derivatization method) and then analyzed by LC/MS/MS. Based on experimental results, as for stacks, the detection limits of hydrazine and trichloroacetic acid were 3.8×10-4 ppmv and 1.422×10-3 ppmv, respectively (sampling volume was 100L, 5 L/min × 20 min, isokinetic sampling). And the detection limits of ethyleneimine and toluene-2,4-diisocyanate were 3.4×10-3 ppmv and 4.96×10-5 ppmv, respectively (sampling volume was 10L, 1 L/min × 10 min, constant flow). As for ambient air, the detection limits of hydrazine, ethyleneimine, trichloroacetic acid, and toluene-2,4-diisocyanate were 5.7×10-3 ppbv, 0.296 ppbv, 1.147 ppbv and 4.0×10-3 ppbv , respectively (sampling volume was 60L, 1 L/min × 60 min, constant flow). The accuracy and precision of hydrazine (HPLC/UV) was 95.993.74% (@10 mg/L). The accuracy and precision of hydrazine (LC/MS/MS) was 103.94.3% (@10 g/L). The accuracy and precision of ethyleneimine were 96.12.1% (@200 g/L), and 104.62.9% (@10 g/L). The accuracy and precision of trichloroacetic acid (LC/MS/MS) were 101.12.2% (@150 g/L), and 99.74.0% (@100 g/L). The accuracy and precision of toluene-2,4-diisocyanate (LC/MS/MS) were 100.93.7% (@20 g/L), and 108.04.0% (@5 g/L). The sampling and analytical methods developed in this project were proven to be practical by surveying at least 4 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, hazardous air pollutants