濃縮を前処理とするガスクロマトグラフィーによる大気中の極微量悪臭成分のキャラクタリゼーションに関する試み

抄録

The characterization of the trace odorants (ppt-ppb level) in air by gas chromatography using the preconcentration methods, such as the cold trapping with liquid oxygen and the trapping at room temperature with porous polymer beads were investigated. The trace odorants (147 odorants) were characterized as to the following eight groups (Table 1, 2) i.e., Group (I): Sulfur compounds; Group (II): Lower aliphatic amines; Group (III): Carbonyl compounds; Group (IV): Hydrocarbons; Group (V): Lower aliphatic mono alcohols; Group (VI): Phenols; Group (VII): Lower fatty acids; Group (VIII): Indoles. The conditions for the systematic gas chromatography of each groups are listed in Table 2 to 10. Theconcentration volume, detection limits, analytical times (including sampling times) and accuracy were as follows: concentration volume, (1-50) liter; detection limits, (0.05-2) ppb; analytical times, less than 40 min;accuracy, less than about 10%.