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Quantification of Imidazole Compounds in Ambient Aerosols at Suburban and Forest Sites in Western Japan


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Title: Quantification of Imidazole Compounds in Ambient Aerosols at Suburban and Forest Sites in Western Japan
Authors: Takao, Yuji / Atarashi, Takumi / Kubo, Takashi / Nagae, Masaki / Nakayama, Tomoki
Issue Date: Dec-2019
Publisher: Korean Society for Atmospheric Environment
Citation: Asian Journal of Atmospheric Environment, 13(4), pp.259-265; 2020
Abstract: Ambient aerosol particles at forest and suburban sites in western Japan were analyzed for imidazole compounds, such as 4 (5)-Methylimidazole (4-MI), 1-ethylimidazole (1-EI), 2-ethylimidazole (2-EI), and imidazole-2-carboxaldehyde (IC). The aerosols were collected on quartz fiber filters and extracted by the solid phase extraction method. The extract was analyzed by HPLC/Q-TOF-MS using an ion-pairing agent. The concentration of 4-MI in winter was higher than those in summer at the forest site; its concentration was highest among the analyzed imidazoles. The concentration of 4-MI in the suburban site was several times higher than the forest site. Anthropogenic activities, such as vehicle emissions, are considered to be the major source of 4-MI in this region.
Keywords: Imidazole compounds / Methylimidazole / Ambient / Quantification / HPLC/ Q-TOF-MS / Ion-pairing agent / Aerosol particle
URI: http://hdl.handle.net/10069/39680
ISSN: 19766912
DOI: 10.5572/ajae.2019.13.4.259
Rights: © 2019 by Asian Journal of Atmospheric Environment. This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/39680

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