水熱分解ガスクロマトグラフィーによる道路上たい積粉じん中のフェノール樹脂の定量

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タイトル別名
  • Determination of phenolic resin concentration in particulate matter accumulated on roads by hydrothermal decomposition-GC.
  • スイネツ ブンカイ ガス クロマトグラフィー ニヨル ドウロジョウ タイセキ

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A new type of method for determining concentration of phenolic resin in accumulated particulate matter on roads by hydrothermal decomposition-gas chromatography (GC) with methylation was investigated.After extracting particulate matter samples with tetrahydrofuran in an ultrasonic wave generator, 9 μl of extract was encapsulated in a pyrex glass capsule of 18 mm length and 0.8 mm i.d.with 0.5 μl of tetramethyl ammonium hydroxide as the methylating agent. The capsule was put in a cup of ferromagnetic material having a curie point of 235°C, and hydrothermal decomposition with methylation was done for 9 sec using a curie-point pyrolyzer. The capsule, after the tip was chipped off, was put in a cup of ferromagnetic material having a curie-point of 445°C, and thermal desorption was done for 9 sec in a pyrolyzer. Hydrothermal desorped decompozates were analyzed by GC. A linear relation between the amount of anisole produced and the concentration of phenolic resin was obtained. Reproducibility of the produced amount of anisole was 3.6% at the relative standard deviation when 300 μg of phenolic resin was analyzed with 6 repeated measurements. The concentration of phenolic resin in accumulated particulate matter samples on roads was measured. As a result, phenolic resin of 120250 μg/g-dust was detected, and the concentration of asbestos estimated from the concentration of the phenolic resin particles was 0.044 to 0.092 wt%.

収録刊行物

  • 分析化学

    分析化学 45 (10), 915-920, 1996

    公益社団法人 日本分析化学会

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