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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 田維誠(Wei-Cheng Tian) | |
dc.contributor.author | Kuan-Ju Chiu | en |
dc.contributor.author | 邱冠儒 | zh_TW |
dc.date.accessioned | 2021-06-16T09:28:23Z | - |
dc.date.issued | 2017 | |
dc.date.submitted | 2017-04-10 | |
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Greenberg, Automated in situ gas chromatographic-mass spectrometric analysis of ppt level volatile organic trace gases using multistage solid-adsorbent trapping. Journal of Chromatography A, 1994. 677(1): p. 123-132. 18. Gorecki, T. and J. Pawliszyn, Sample introduction approaches for solid phase microextraction/rapid GC. Analytical Chemistry, 1995. 67(18): p. 3265-3274. 19. 蔡蘊明. 氣相層析儀簡介. 1999; Available from: http://www.ch.ntu.edu.tw/~chemedu3/Lecture/GC.htm. 20. Terry, S.C., J.H. Jerman, and J.B. Angell, A gas chromatographic air analyzer fabricated on a silicon wafer. IEEE Transactions on Electron Devices, 1979. 26(12): p. 1880-1886. 21. Lu, C.-J., et al., First-generation hybrid MEMS gas chromatograph. Lab on a Chip, 2005. 5(10): p. 1123-1131. 22. Contreras, J.A., et al., Hand-portable gas chromatograph-toroidal ion trap mass spectrometer (GC-TMS) for detection of hazardous compounds. 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Dooper, Automatic system for rapid analysis of volatile compounds by purge‐and‐cold‐trapping/capillary gas chromatography. Journal of High Resolution Chromatography, 1985. 8(11): p. 755-763. 41. Wikipedia. Nafion. Available from: https://en.wikipedia.org/wiki/Nafion. 42. Foulger, B. and P. Simmonds, Drier for field use in the determination of trace atmospheric gases. Analytical chemistry, 1979. 51(7): p. 1089-1090. 43. Burns, W.F., et al., Problems with a Nafion® membrane dryer for drying chromatographic samples. Journal of Chromatography A, 1983. 269: p. 1-9. 44. Bloemen, H., H. Bos, and H. Dooper, Measuring VOC for the study of atmospheric processes. Int. Laboratory, 1990. 20: p. 23-26. 45. Schmidt-Rohr, K. and Q. Chen, Parallel cylindrical water nanochannels in Nafion fuel-cell membranes. Nature materials, 2008. 7(1): p. 75-83. 46. Kusoglu, A. and A.Z. Weber, Water Transport and Sorption in Nafion Membrane, in Polymers for Energy Storage and Delivery: Polyelectrolytes for Batteries and Fuel Cells. 2012, American Chemical Society. p. 175-199. 47. Noh, H., Parylene Microcolumn for Miniature Gas Chromatograph, in Mechanical Engineering. 2004, Georgia Institute of Technology. 48. Greenspan, L., Humidity fixed points of binary saturated aqueous solutions. Journal of research of the national bureau of standards, 1977. 81(1): p. 89-96. 49. 黃柏愷, 整合揮發性有機化合物氣體微感測器與改良式攜帶型氣相層析儀之研究. 國立臺灣大學電機資訊學院電子工程學研究所碩士論文, 2015. 50. Majsztrik, P., A. Bocarsly, and J. Benziger, Water permeation through Nafion membranes: the role of water activity. The Journal of Physical Chemistry B, 2008. 112(51): p. 16280-16289. 51. Fuller, T.F., Solid-polymer-electrolyte fuel cells. 1992, Lawrence Berkeley Lab., CA (United States). | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/59571 | - |
dc.description.abstract | 近年來人們為了追求更好的生活,應用於環境監測與檢測人體呼吸之氣體檢測技術日益受到重視。在環境中根據不同的汙染物揮發性有機氣體 (VOCs) 特性及濃度,受曝者輕則身體不適,重則致命;在人體呼吸中氣體檢測技術亦可提供一早期診斷工具使病患提早治療。然而在此兩應用中水氣是影響檢測的因素,對於氣體檢測技術中的氣相層析儀之關鍵組件皆有一定影響。
氣體樣品中的水氣去除方式有許多種,然而不同的方式有對應的問題存在。本研究中利用市售之全氟磺酸聚四氟乙烯共聚物 (Nafion®) 薄膜作為水氣選擇性通透膜,搭配鍍有聚一氯對二甲苯 (Parylene C) 之聚二甲基矽氧烷 (PDMS) 為流道結合而成一除水裝置。除水裝置由PDMS之上下流道中間夾入一層Nafion®薄膜所組成,整體裝置體積10 cm × 5 cm × 3 cm,流道寬度為1 mm,流道之水氣交換區域面積為1 mm × 60 mm。依據採樣流量、乾空氣流量與濕度梯度差之不同,設計之除水裝置能使樣品濕度下降20% ~ 70%。以微型氣相層析儀進行實驗,在流速100 ml/min 及50 ml/min之採樣流量下,無論如何調變乾燥空氣流量其除水效果皆無顯著差異。以潮濕之六種標準品與除水後之六種標準品訊號相比,水氣訊號雖仍存在但訊號明顯下降,且除水後之丙酮訊號可明顯辨認,潮濕標準品則否。在長期使用下,潮濕樣品使系統訊號逐採樣次數而遞減最終下降至初始訊號之20% 後飽和;除水後之樣品以同一實驗流程操作則在60% 時達到飽和。將水氣交換區域提升二倍對於末端之水氣訊號變化並無顯著差異。本實驗成功將Nafion®結合低成本技術製造一可用於微型氣相層析儀之初代除水裝置,實驗中可將濕度約85%之水氣降為30%。未來可以將除水裝置進一步微小化並提高除水效率為目標。 | zh_TW |
dc.description.abstract | In recent years, detection technologies for environment monitoring and human breath analysis have become increasingly crucial. In the ambient, there exists various volatile organic compounds (VOCs) that can probably cause the illness or even death of the human. From human breath analysis, the composition of VOCs in the exhaled air can be an early diagnostic indicator for personal health status. When performing VOCs detection, water vapor can interfere the performance of a detection such as a gas chromatography (GC).
Several methods are applied to remove the water vapor, but they all can not solve the issues for our applications. Nafion® is selected as a selective water diffusion membrane in this study. By combining a Nafion® membrane with parylene C and PDMS, a complete dehydrator is formed to remove water vapor. The dehydrator is assembled by a Nafion® membrane sandwiched between two PDMS flow channels. The volume of the whole dehydrator is 10 cm × 5 cm × 3 cm, with a channel width of 1 mm, and a water exchange area of 60 mm 1 mm. This device is proved to lower the relative humidity (R.H.) from 20% to 70% based on the optimization of sampling flow rate, dry air flow rate and gradient of R.H. With our design of experiments, it is observed that the humidified sample mixture (water vapor with 6 VOCs) lower the intensity of the signal to 20% of the original signal while the dehydrated sample mixture decrease the intensity of the signal to 60% of the original signal. It is demonstrated that we have successfully developed a cost effective dehydrator prototype for a micro GC system and the water vapor in a compound mixture can be reduced from 85% to 30%. Further miniaturization and enhanced dehydration is analyzed and can be explored in the future. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T09:28:23Z (GMT). No. of bitstreams: 1 ntu-106-R03945015-1.pdf: 4292806 bytes, checksum: 8a0f124c25af5602134965ea073f8df1 (MD5) Previous issue date: 2017 | en |
dc.description.tableofcontents | 口試委員審定書 I
致謝 II 中文摘要 III Abstract IV 目錄 V 表目錄 VII 圖目錄 VIII 第一章:緒論 1 1.1. 研究動機 1 1.2. 氣體檢測裝置介紹 3 1.2.1. 氣相層析儀 3 1.2.2. 電子鼻 9 1.3. 應用於氣相層析儀之除水技術介紹 10 1.3.1. 乾燥劑 10 1.3.2. 冷凝濃縮 14 1.3.3. Nafion®薄膜除水 14 1.4. 論文架構 16 第二章:理論與模擬 17 2.1. 薄膜滲透理論 17 2.2. Nafion® 之水氣滲透 19 2.3. 除水裝置設計與模擬 21 第三章:實驗系統架設 26 3.1. 除水裝置製程 26 3.1.1. 微雕技術用於製程開發 26 3.1.2. PDMS鑄模 28 3.1.3. Parylene C 蒸鍍 28 3.1.4. 元件後製程處理 29 3.1.4. 部件組裝 32 3.2. 儀器校正與實驗系統架設 35 3.2.1. 氣體生成系統 36 3.2.2. 微型氣相層析儀 39 3.2.3. 微型氣相層析儀採樣系統 40 第四章:微型除水裝置量測結果與討論 43 4.1. 除水裝置特性量測 43 4.1.1. 以氣體生成系統進行水氣去除效果量測 43 4.1.2. 微型氣相層析儀下之除水裝置特性量測 45 4.1.3. 常用參數之除水效果與ANOVA分析 46 4.2. 有機氣體吸附性量測 50 4.3. 單標除水效果量測 51 4.4. 混標除水效果量測 55 4.5. 兩倍流道長與除水效果 57 4.6. 高濕度樣品採樣後系統穩定性與除水採樣後系統穩定性比較 59 第五章:結論與未來展望 61 5.1. 結論 61 5.2. 未來展望 62 Reference 63 | |
dc.language.iso | zh-TW | |
dc.title | 開發Nafion®除水裝置並應用於微型氣相層析儀 | zh_TW |
dc.title | Development of Nafion® Dehydrator for Micro Gas Chromatography | en |
dc.type | Thesis | |
dc.date.schoolyear | 105-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 呂家榮(Chia-Jung Lu),沈弘俊(Horn-Jiunn Sheen) | |
dc.subject.keyword | 微型氣相層析儀,除水,納菲薄膜R,濕氣,聚二甲基矽氧烷, | zh_TW |
dc.subject.keyword | micro gas chromatography,dehydration,NafionR,moisture,PDMS, | en |
dc.relation.page | 66 | |
dc.identifier.doi | 10.6342/NTU201700745 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2017-04-11 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 生醫電子與資訊學研究所 | zh_TW |
顯示於系所單位: | 生醫電子與資訊學研究所 |
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