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

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)1023-1029
ページ数7
ジャーナルEnvironmental Chemistry Letters
17
2
DOI
出版ステータスPublished - 2019 6月 15

ASJC Scopus subject areas

  • 環境化学

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