大気圧イオン化質量分析法による室内空気中微量アセトンの定量

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タイトル別名
  • Determination of trace amounts of acetone in room air by atmospheric pressure ionization MS.
  • タイキアツ イオンカ シツリョウ ブンセキホウ ニヨル シツナイ クウキチュウ

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抄録

Determination of trace amounts of acetone at (sub-ppm level) in air by atmospheric pressure ionization mass spectrometry (API-MS) was studied. Air samples were directly introduced to the ion source of the instrument without pre-concentration. This technique (positive mode) is also used for real-time analysis of air samples with rapid scanning, and has been shown to be highly sensitive for acetone (at sub-ppm levels). The peaks at m/z 19, 37, 55, 73, 91, corresponded to protonated water clusters of (H2O)H+, (H2O)2H+, (H2O)3H+, (H2O)4H+, and (H2O)5H+, respectively. The peak at m/z 47 was due to (C2H5OH)H+, and that at 59 due to ((CH3)2CO)H+ (acetone). They showed good repeatability with a relative standard deviation of less than about 5%. The API-MS voltage response produced a straight line in the approximate range 0.01 to 0.1 ppm of acetone in air.

収録刊行物

  • 分析化学

    分析化学 44 (12), 1055-1057, 1995

    公益社団法人 日本分析化学会

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