Adsorption of Gaseous Organic Compounds onto PM2.5 During Air Sampling

DOI Web Site 参考文献10件
  • UETA Ikuo
    Department of Applied Chemistry, University of Yamanashi, 4-3-11 Takeda, Kofu 400-8511, Japan
  • SUZUKI Hyuma
    Department of Applied Chemistry, University of Yamanashi, 4-3-11 Takeda, Kofu 400-8511, Japan
  • KOYAMA Tomoya
    Department of Applied Chemistry, University of Yamanashi, 4-3-11 Takeda, Kofu 400-8511, Japan
  • SAITO Yoshihiro
    Department of Applied Chemistry and Life Science, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Japan

抄録

<p>For the quantitative determination of organic compounds in particulate matter less than 2.5 μm (PM2.5), it is first collected on a filter paper using a high-volume air sampler and the organic compounds are eluted with an organic solvent. However, a positive error occurs in the quantitative results owing to the adsorption of gaseous organic compounds onto the filter paper and PM2.5. This study investigates the adsorption of gaseous organic compounds onto PM2.5. The adsorption of these compounds was evaluated by air sampling using two filter papers: one on which the target organic compounds were spiked (upstream filter) and another on which PM2.5 was adsorbed (downstream filter). Results obtained using n-alkanes clearly indicated a large amount of gaseous n-C26 adsorption onto PM2.5. In contrast, octadecyl benzene, which has a boiling point similar to that of n-C26H54, did not show specific adsorption onto PM2.5. These results suggested that the adsorption of gaseous organic compounds onto PM2.5 may be affected by the volatility and chemical structure of the organic compound. Furthermore, in the component analysis of organic compounds in PM2.5, a large positive error may occur for a specific organic compound with low volatility due to its gas adsorption onto PM2.5.</p>

収録刊行物

  • CHROMATOGRAPHY

    CHROMATOGRAPHY advpub (0), 2024-04-05

    クロマトグラフィー科学会

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