气候变化领域集成服务门户(CCPortal): Dicarboxylic acids; oxocarboxylic acids and α-dicarbonyls in atmospheric aerosols from Mt. Fuji; Japan: Implication for primary emission versus secondary formation

CCPortal

DOI	10.1016/j.atmosres.2019.01.021
	Dicarboxylic acids; oxocarboxylic acids and α-dicarbonyls in atmospheric aerosols from Mt. Fuji; Japan: Implication for primary emission versus secondary formation
	Kunwar B.; Kawamura K.; Fujiwara S.; Fu P.; Miyazaki Y.; Pokhrel A.
发表日期	2019
ISSN	0169-8095
起始页码	58
结束页码	71
卷号	221
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 daytime 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. © 2019
英文关键词	Acid-catalyzed heterogeneous reaction; Diacids; Mt. Fuji; Oxoacids; α-Dicarbonyls
语种	英语
scopus关键词	Atmospheric aerosols; Atmospheric chemistry; Atmospheric thermodynamics; Boundary layers; Isoprene; Organic carbon; Troposphere; Diacids; Dicarbonyls; Heterogeneous reactions; Mt. Fuji; Oxo-acids; Oxalic acid; aerosol formation; carbonyl compound; carboxylic acid; catalysis; emission; heterogeneity; oxidation; troposphere; Chubu; Honshu; Japan; Mount Fuji
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162127
作者单位	Institute of Low Temperature Science, Hokkaido University, Sapporo, 060-0819, Japan; Chubu Institute for Advanced Studies, Chubu University, 1200 Matsumoto-cho, Kasugai, 487-8501, Japan; Graduate School of Environmental Sciences, Hokkaido University, Sapporo, 060-0810, Japan; Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072, China; Asian Research Centre, Kathmandu, Nepal
推荐引用方式 GB/T 7714	Kunwar B.,Kawamura K.,Fujiwara S.,et al. Dicarboxylic acids; oxocarboxylic acids and α-dicarbonyls in atmospheric aerosols from Mt. Fuji; Japan: Implication for primary emission versus secondary formation[J],2019,221.
APA	Kunwar B.,Kawamura K.,Fujiwara S.,Fu P.,Miyazaki Y.,&Pokhrel A..(2019).Dicarboxylic acids; oxocarboxylic acids and α-dicarbonyls in atmospheric aerosols from Mt. Fuji; Japan: Implication for primary emission versus secondary formation.Atmospheric Research,221.
MLA	Kunwar B.,et al."Dicarboxylic acids; oxocarboxylic acids and α-dicarbonyls in atmospheric aerosols from Mt. Fuji; Japan: Implication for primary emission versus secondary formation".Atmospheric Research 221(2019).