臺灣博碩士論文加值系統

氣相層析儀為一般常用對空氣中揮發及半揮發性有機化合物定量分析之工
具, 然而樣品的濃縮前處理手續, 最佳之分離條件及分離管柱之選擇均為
費時與複雜之程序, 若將氣相層析儀配合質譜儀之連線, 雖可同時做定量
及定性之分析且具極高之靈敏度, 然而質譜儀價格昂貴維護不易, 較不具
經濟性。以多行程長光徑系統配合霍氏紅外線光譜儀（ FT/IR )可同時並
快速分析混和氣體樣品中各成分的濃度, 本研究以十公尺長之多行程長光
徑系統配合FT/IR 針對十三種有機氯化合物( 1,2-二氯乙烷, 1,1,1-三氯
乙烷, 四氯乙烯, 三氯乙烯, 1,2-二氯丙烷, 1,3-二氯丙烷,四氯化碳,
氯彷, 二氯甲烷, 1,1-二氯乙烷, 反-1,2-二氯乙烯, 1,1,2, - 三氯乙
烷, 1,1,2,2 - 四氯乙烷) 做氣體分析, 發現單一成份樣品最低可偵測
至7ppm之濃度, 而對此十三種化合物其標準檢量曲線在濃度範圍約7ppm
至300ppm間均為線性, 而對混合物樣品, 亦可同時藉由各化合物在650
cm-1到 1000cm-1間C-Cl之特徵波長之吸收度參數, 依比爾定律經由 The
International Mathematics and Science Library (IMSL)之數學副程
式資料庫的輔助計算, 分析其中十種成分之濃度, 並比較其與氣相層析
儀- 火焰離子偵測器法所得之結果, 誤差均在 12%以內; 而其分析之靈敏
度和氣相層析儀- 火焰離子偵測器所得結果大致相同。

Gas chromatographic (GC)technique was one of the most popular
methods for the quantitative analysis of volatile or semi-
volatile organic compounds. However, the pretreatments of
concentrated sampling, the selection of columns, and the best
separation conditions for the GC technique were tedious and
complicated. Although the couple instruments of gas
chromatography with mass spectrometer (GC/MS) were used
successfully in both qualitative and quantitative analyses for
the muticomponent sample. The usage of the GC/MS was not
economical because of high costs and hard maintenance of mass
spectrometer. Fourier Transform Infrared Spectroscopy(FTIR)
with long path gas cell was an alternative technique for the
analysis of gas samples. In this investigation, thirteen
aliphatic chlorides : 1,2-Dichloroethane,
1,1,1-Trichloroethane, Tetrachloroethylene, Trichloroethylene,
1,2-Dichloropro-pane, 1,3-Dichloropropane , Carbon
tetrachloride, Chloroform, Dichloromethane, 1,1-Dichloroethane,
trans-1,2-Dichloroethylene, 1,1,2-Trichloroethane,
1,1,2,2-Tetrachloroethane were analyzed. The concentration of
single component compound was obtained by FTIR technique down
to 7 ppm. The multicomponent samples of ten aliphatic chlorides
mixtures were also analyzed simultaneous from FTIR method. The
results were calculated and compared with those from GC/FID
technique. They were consistent within 12% 。