Characteristics on Supercritical Fluid Extraction of Organochlorine Compounds in Model Solid Waste and Application to Real Sample

DOI 16 References
  • Kawamoto Katsuya
    Dept. of Architectural Environmental Engineering, Faculty of Engineering, Kanto Gakuin University

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Other Title
  • 超臨界流体抽出法による模擬廃棄物試料中有機塩素化合物の抽出特性と実試料への適用

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Abstract

The supercritical fluid extraction method using carbon dioxide was investigated from the viewpoint of the relationship between the recovery of organic pollutants in the model waste sample and extraction parameters. Chlorobenzenes were selected as target compounds because they are considered to be priority pollutants. Extraction was almost completed within 30 min under the flowrate of ca. 1ml/min on model sample. The pressure which determines the density of fluid under the constant temperature essentially affects extraction efficiency with increased recovery in the region of high pressure. However, extraction recovery does not simply depend on the increase of pressure, the effect of temperature is also observed. It is expected that the volatilization effect contributes to achieving high extraction efficiency for volatile and thermally stable compounds. Though the addition of a polar modifier increases extraction efficiency, the effect is influenced by interaction between the analyte-matrix complex and the bulk of supercritical fluid. The application of supercritical fluid extraction to real fly ash sample demonstrates that this method is not sufficient for accomplishing quantitative extraction. Further problems were also discussed.

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Details 詳細情報について

  • CRID
    1390282680273652224
  • NII Article ID
    10002472401
  • NII Book ID
    AN10414685
  • DOI
    10.3985/jswme.7.152
  • ISSN
    1883163X
    18831648
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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