大気粉じん中多環芳香族炭化水素類の多成分同時抽出における超臨界流体抽出法の適用 (<特集>環境ホルモンと分析化学)

• 小田 淳子

  岡山県環境保健センター

書誌事項

タイトル別名

• Application of supercritical fluid extraction for the analysis of polycyclic aromatic hydrocarbons in airborne particulates.
• 大気粉じん中多環芳香族炭化水素類の多成分同時抽出における超臨界流体抽出法の適用
• タイキ フンジン チュウ タカン ホウコウゾク タンカスイソルイ ノ タセイブン ドウジ チュウシュツ ニ オケル チョウリンカイ リュウタイ チュウシュツホウ ノ テキヨウ

抄録

An extraction and separation method using supercritical fluid extraction (SFE) has been investigated for the pretreatment of PAHs as well as benzo[a]pyrene (BaP) in airborne particulates, which is estimated to be one of the so-called endocrine disruptors. The instrumental parameters of SFE were considered for the quantitative SFE of 30 PAHs spiked in airborne particulates. The extraction efficiency of SFE with the optimized operating conditions was compared to that of the classical method using sonication extraction to be applied to real sample analysis. The extraction efficiencies for 30 representative PAHs were influenced by such factors as the extraction temperature, density of the extraction fluid, volume of the extraction fluid, the extraction time, elute solvent from an analyte trap and the extraction size of samples. It was shown that the combination of three different conditions of SFE and the use of 5% methanol-modified supercritical carbon dioxide lead to more efficient recoveries of PAHs from airborne particulates. The SFE recoveries for higher molecular-weight PAHs ( > 178 amu) than phenanthrene ranged from 70.3 to 103%, while those with sonication extraction ranged from 67.8 to 99.5%. The SFE results obtained from 31 samples of native particulates in air were also comparable to the sonication values in terms of the BaP concentrations and its correlation coefficient. The average of the SFE recoveries for the BaP concentrations was 120%, and the correlation coefficient was 1.00 versus to their values certified, respectively, with sonication procedure. The results of this work indicate that the proposed method with SFE is useful for the rapid and effective pretreatment of airborne particulates. The SFE condition optimized from the experimental results was as follows. Step-1: extraction fluid, pure CO₂; extraction temperature, 60°C; density, 0.65 g/ml; static/ dynamic extraction time, 2/10 min; extract trap temperature, - 5°C ; rinse trap temperature, 30°C; trap rinse, 1.6 ml of acetone. Step-2: extraction fluid, 5% methanol-modified CO₂; extraction temperature, 80°C ; density, 0.65 g/ml; static/dynamic extraction time, 2/20 min; extract trap temperature, 80°C. Step-3: extraction fluid, pure CO₂; extraction temperature, 80°C; density, 0.35 g/ml; static/dynamic extraction time, 2/5 min; extract trap temperature, 80°C ; rinse trap temperature, 40°C ; trap rinse, 1.6 ml of acetone.

収録刊行物

• 分析化学

  分析化学 48 (6), 595-607, 1999

  公益社団法人 日本分析化学会

キーワード

• polycyclic aromatic hydrocarbon
• supercritical fluid extraction
• airborne particulate
• extraction and separation
• extraction efficiency

詳細情報

• CRID: 1390001204052550016
• NII論文ID: 110002905733
• NII書誌ID: AN00222633
• DOI: 10.2116/bunsekikagaku.48.595
• COI: 1:CAS:528:DyaK1MXjvFGls7s%3D
• NDL書誌ID: 4757913
• ISSN: 05251931
• ISSN: http://id.crossref.org/issn/05251931
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4757913
• Web Site: http://www.jstage.jst.go.jp/article/bunsekikagaku1952/48/6/48_6_595/_pdf
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10894537
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • NDL-Digital
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可