A Method for Measuring 1,2-Dichloropropane in Workplace Air by Thermal Desorption - Gas Chromatography/Flame Ionization Detector

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  • FURUSE Mitsuya
    Work Environment Research Group, National Institute of Occupational Safety and Health
  • HAGIWARA Masayoshi
    Work Environment Research Group, National Institute of Occupational Safety and Health
  • ONO-OGASAWARA Mariko
    Work Environment Research Group, National Institute of Occupational Safety and Health
  • KANNO Seiichiro
    Work Environment Research Group, National Institute of Occupational Safety and Health

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Other Title
  • 加熱脱着—ガスクロマトグラフ法による1,2-ジクロロプロパンの分析法
  • 加熱脱着-ガスクロマトグラフ法による1,2-ジクロロプロパンの分析法
  • カネツ ダッチャク-ガスクロマトグラフホウ ニ ヨル 1,2-ジクロロプロパン ノ ブンセキホウ

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Abstract

An analytical method was developed for the quantification of a low level of 1,2-dichloropropane in workplace air using a sampler containing 200 mg Porapak QS and thermal desorption - gas chromatography/flame ionization detector analysis. Air was drawn into the sampler to sample 1,2-Dichloropropane at a flow rate of 200 mL/min for 10 min. <br>The breakthrough time was longer than 60 min. The thermal desorption efficiency was close to 100%, and the recovery rate of 1,2-dichloropropane did not decrease after storage for 10 days at room temperature. The calibration curve was linear in the range 2.41 to 151 ppb of 1,2-dichloropropane concentration in the air. The lower limit of quantitation of this method is 1.30 ppb for a sampling volume of 2 L, which is lower than 1/10 of the target value of 35 ppb.<br> 1,3-dichloropropane can be analyzed by the present method.

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