Humic-like substances global levels and extraction methods in aerosols

Naoya Katsumi, Shuhei Miyake, Hiroshi Okochi, Yukiya Minami, Hiroshi Kobayashi, Shungo Kato, Ryuichi Wada, Masaki Takeuchi, Kei Toda, Kazuhiko Miura

研究成果: Article

抜粋

The abundance of humic-like substances in the atmosphere has received considerable attention since these substances play an important role in various atmospheric processes. The wide variety of quantitative techniques used to study humic-like substances produce dissimilar results, making data comparison difficult. Also, global background concentrations and the transfer of atmospheric humic-like substances are poorly known. Here, we compared resins to extract humic-like substances in aerosols, and we measured contents in aerosols from Mt. Fuji. Results show that diethylaminoethyl cellulose resins extracted more humic-like substances than the diethylaminoethyl resin (hydroxylated methacrylic polymer). The mean humic-like substances concentrations in the free troposphere in East Asia is similar to that in Europe, suggesting that the global background level of humic-like substances is 0.05 μg C m−3, based on the humic-like substances concentrations on Mt. Fuji and Mt. Sonnblick. Humic-like substances concentrations, especially fulvic acids concentration, at the summit of Mt. Fuji increased when air masses came from the continent along with the carbon monoxide and ozone.

元の言語English
ページ(範囲)1023-1029
ページ数7
ジャーナルEnvironmental Chemistry Letters
17
発行部数2
DOI
出版物ステータスPublished - 2019 6 15

ASJC Scopus subject areas

  • Environmental Chemistry

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  • これを引用

    Katsumi, N., Miyake, S., Okochi, H., Minami, Y., Kobayashi, H., Kato, S., Wada, R., Takeuchi, M., Toda, K., & Miura, K. (2019). Humic-like substances global levels and extraction methods in aerosols. Environmental Chemistry Letters, 17(2), 1023-1029. https://doi.org/10.1007/s10311-018-00820-6