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DOI10.1016/j.atmosenv.2021.118543
Origins of free and combined amino acids in the aerosols at an inland urban site in Japan
Matsumoto K.; Kim S.; Hirai A.
发表日期2021
ISSN1352-2310
卷号259
英文摘要A year-round observation of the free amino acids (FAA) and combined amino acids (CAA) in coarse and fine aerosols were conducted at an urban site in Japan. The averaged concentrations of the total FAA and total CAA measured in this study were 149.9 and 237.6 pmolN m−3, respectively, in coarse aerosols, and 177.9 and 562.2 pmolN m−3, respectively, in fine aerosols. The concentrations of the total CAA were higher than those of the total FAA in both mode ranges. The CAA were mainly partitioned into the fine-mode range, whereas the FAA were contained in both mode ranges with a similar concentration level. Only 8.1% of the water-soluble organic nitrogen (WSON) in fine aerosols was explained by these amino acids, although a significant contribution (26.4%) of them to the WSON was found in coarse aerosols. Correlation and factor analyses including these amino acids and other chemical species in the aerosols and gas phase were conducted to discuss potential sources of these amino acids. Plant debris and their associated materials, sea-salt, and Asian dust particles would be important potential sources of the coarse-mode FAA. The most dominant FAA in coarse aerosols was serine that is considered to be derived from sea-salt and Asian dust particles, whereas the other major FAA in coarse aerosols would be from plant debris and associated materials. The coarse-mode CAA can be also considered to be mainly from plant debris and associated materials. Glutamic acid and aspartic acid were dominant in the coarse-mode CAA, and estimated to be from these sources. Significant parts of the fine-mode FAA would be derived from the photochemical aging of the fine-mode CAA in polluted air masses from the Asian continent. Glycine and arginine were dominant in the fine-mode FAA, and estimated to be from the photochemical aging process. The fine-mode CAA is considered to be mainly from both the fossil fuel and biomass burning particles from both the Asian continental and local sources. Glutamic acid and glycine were dominant in the fine-mode CAA, and would be mainly from these sources, especially the Asian continental sources. Serine that is the most dominant compound in the fine-mode CAA, however, is considered to be derived from other unidentified sources. © 2021 Elsevier Ltd
关键词Coarse aerosolCombined amino acidFine aerosolFree amino acidSourceWater-soluble organic nitrogen
语种英语
scopus关键词Aerosols; Atmospheric chemistry; Chemical analysis; Debris; Dust; Fossil fuels; Urban growth; Amino-acids; Coarse aerosols; Coarse mode; Combined amino acid; Fine aerosols; Free amino acids; Source; Urban site; Water-soluble organic nitrogen; Water-soluble organics; Amino acids; amino acid; arginine; aspartic acid; combined amino acid; fossil fuel; glutamic acid; glycine; organic nitrogen; serine; unclassified drug; water; aerosol; aspartic acid; biomass burning; concentration (composition); dust; fossil fuel; organic nitrogen; urban site; aerosol; aging; air pollution; Article; biomass; correlation analysis; dust; factor analysis; Japan; urban area; Japan
来源期刊ATMOSPHERIC ENVIRONMENT
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/248357
作者单位Division of Life and Environmental Sciences, University of Yamanashi, Japan; Faculty of Life and Environmental Sciences, University of Yamanashi, Japan
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Matsumoto K.,Kim S.,Hirai A.. Origins of free and combined amino acids in the aerosols at an inland urban site in Japan[J],2021,259.
APA Matsumoto K.,Kim S.,&Hirai A..(2021).Origins of free and combined amino acids in the aerosols at an inland urban site in Japan.ATMOSPHERIC ENVIRONMENT,259.
MLA Matsumoto K.,et al."Origins of free and combined amino acids in the aerosols at an inland urban site in Japan".ATMOSPHERIC ENVIRONMENT 259(2021).
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