GSTDTAP  > 地球科学
DOI10.1016/j.atmosres.2019.01.021
Dicarboxylic acids, oxocarboxylic acids and alpha-dicarbonyls in atmospheric aerosols from Mt. Fuji, Japan: Implication for primary emission versus secondary formation
Kunwar, Bhagawati1,2; Kawamura, Kimitaka1,2; Fujiwara, Shintaro1,3; Fu, Pingqing1,4; Miyazaki, Yuzo1; Pokhrel, Ambarish1,5
2019-06-01
发表期刊ATMOSPHERIC RESEARCH
ISSN0169-8095
EISSN1873-2895
出版年2019
卷号221页码:58-71
文章类型Article
语种英语
国家Japan; Peoples R China; Nepal
英文摘要

Aerosol samples were collected at the summit of Mt. Fuji in July-August 2009 and analyzed for diacids and related compounds together with major ions to decipher the sources and formation process of organic aerosols in the free troposphere. Molecular distributions of diacids showed the predominance of oxalic acid (C-2) followed by succinic (C-4) and malonic (C-3) acids. The average concentration of total diacids is ten times higher in whole-day samples than night-only samples due to the uplift of planetary boundary layer in daytime, suggesting the day-time formation of diacids in the uplifted ground-level air mass along the mountain slope. A strong correlation is found between C-4 and levoglucosan in whole-day and nighttime samples. Liquid water content (LWC) shows strong correlations in nighttime with anthropogenic and biogenic secondary organic aerosol (SOA) tracers (e.g., adipic (0.90, p < 0.05) and phthalic acids (0.93, p < 0.05) and 3-methyl 2,3,4-trihydroxy-1-butene (0.95, p < 0.05), suggesting that aqueous-phase chemistry is important for the formation of water-soluble organic aerosols in the free troposphere. In whole-day samples, LWC is strongly correlated with organic carbon (r = 0.97, p < 0.05), and isoprene-SOA tracers such as methylthreitol (0.96, p < 0.05), methylerythritol (0.97, p < 0.05), 2-methylglyceric acid (0.94, p < 0.05) and glycolic acid (0.98, p < 0.05), suggesting that daytime SOAs are mainly from the oxidation of isoprene emitted from the regional forests on the foothill of Mt. Fuji. A strong correlation between LWC and glycolic acid further suggests that isoprene is the main precursor for the production of oxalic acid via glycolic acid as intermediate. This study supports the heterogeneous formation of diacids in the free troposphere.


英文关键词Diacids Oxoacids alpha-Dicarbonyls Acid-catalyzed heterogeneous reaction Mt. Fuji
领域地球科学
收录类别SCI-E
WOS记录号WOS:000460716200006
WOS关键词WESTERN NORTH PACIFIC ; ORGANIC AEROSOL ; KETOCARBOXYLIC ACIDS ; MARINE AEROSOLS ; OXALIC-ACID ; MOLECULAR-DISTRIBUTIONS ; OKINAWA ISLAND ; FATTY-ACIDS ; ISOTOPIC COMPOSITIONS ; SUBTROPICAL OKINAWA
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/183452
专题地球科学
作者单位1.Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido 0600819, Japan;
2.Chubu Univ, Chuhu Inst Adv Studies, 1200 Matsumoto Cho, Kasugai, Aichi 4878501, Japan;
3.Hokkaido Univ, Grad Sch Environm Sci, Sapporo, Hokkaido 0600810, Japan;
4.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China;
5.Asian Res Ctr, Kathmandu, Nepal
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Kunwar, Bhagawati,Kawamura, Kimitaka,Fujiwara, Shintaro,et al. Dicarboxylic acids, oxocarboxylic acids and alpha-dicarbonyls in atmospheric aerosols from Mt. Fuji, Japan: Implication for primary emission versus secondary formation[J]. ATMOSPHERIC RESEARCH,2019,221:58-71.
APA Kunwar, Bhagawati,Kawamura, Kimitaka,Fujiwara, Shintaro,Fu, Pingqing,Miyazaki, Yuzo,&Pokhrel, Ambarish.(2019).Dicarboxylic acids, oxocarboxylic acids and alpha-dicarbonyls in atmospheric aerosols from Mt. Fuji, Japan: Implication for primary emission versus secondary formation.ATMOSPHERIC RESEARCH,221,58-71.
MLA Kunwar, Bhagawati,et al."Dicarboxylic acids, oxocarboxylic acids and alpha-dicarbonyls in atmospheric aerosols from Mt. Fuji, Japan: Implication for primary emission versus secondary formation".ATMOSPHERIC RESEARCH 221(2019):58-71.
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