TY - JOUR
T1 - Humic-like substances global levels and extraction methods in aerosols
AU - Katsumi, Naoya
AU - Miyake, Shuhei
AU - Okochi, Hiroshi
AU - Minami, Yukiya
AU - Kobayashi, Hiroshi
AU - Kato, Shungo
AU - Wada, Ryuichi
AU - Takeuchi, Masaki
AU - Toda, Kei
AU - Miura, Kazuhiko
N1 - Funding Information:
This research was carried out by cooperation from the NPO Mount Fuji Research Station (MFRS) and supported by Grant-in-Aid for Scientific Research (No. 16K21427) from the Japan Society for the Promotion of Science and Waseda University Grant for Special Research Projects (Project Number: 2016S-068).
Publisher Copyright:
© 2018, Springer Nature Switzerland AG.
PY - 2019/6/15
Y1 - 2019/6/15
N2 - 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.
AB - 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.
KW - Diethylaminoethyl resin
KW - Free troposphere
KW - Humic-like substances
KW - Water-soluble organic carbon
UR - http://www.scopus.com/inward/record.url?scp=85055084910&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055084910&partnerID=8YFLogxK
U2 - 10.1007/s10311-018-00820-6
DO - 10.1007/s10311-018-00820-6
M3 - Article
AN - SCOPUS:85055084910
SN - 1610-3653
VL - 17
SP - 1023
EP - 1029
JO - Environmental Chemistry Letters
JF - Environmental Chemistry Letters
IS - 2
ER -