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

• Takao, Yuji

• Atarashi, Takumi

• Kubo, Takashi

• Nagae, Masaki

• Nakayama, Tomoki

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.

Asian Journal of Atmospheric Environment, 13(4), pp.259-265; 2020

Journal

• Asian Journal of Atmospheric Environment

  Asian Journal of Atmospheric Environment 13 (4), 259-265, 2019-12

  Korean Society for Atmospheric Environment

Keywords

• Imidazole compounds
• Methylimidazole
• Ambient
• Quantification
• HPLC/ Q-TOF-MS
• Ion-pairing agent
• Aerosol particle

Details

• CRID: 1050568772217285504
• NII Article ID: 120006988292
• ISSN: 19766912
• ISSN: 22871160
• DOI: 10.5572/ajae.2019.13.4.259
• HANDLE: 10069/39680
• Web Site: https://nagasaki-u.repo.nii.ac.jp/records/512
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN