globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2017.07.028
Scopus记录号: 2-s2.0-85025479842
论文题名:
Secondary formation of oxalic acid and related organic species from biogenic sources in a larch forest at the northern slope of Mt. Fuji
作者: Mochizuki T; , Kawamura K; , Miyazaki Y; , Wada R; , Takahashi Y; , Saigusa N; , Tani A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 166
起始页码: 255
结束页码: 262
语种: 英语
英文关键词: Larix kaempferi forest ; Oxalic acid ; Ozone ; Terpenes ; Unsaturated fatty acids ; Water-soluble organic aerosol
Scopus关键词: Aerosols ; Carbon ; Ecosystems ; Fatty acids ; Forestry ; Isoprene ; Monoterpenes ; Olefins ; Organic acids ; Organic carbon ; Ozone ; Terpenes ; Unsaturated fatty acids ; Volatile organic compounds ; Average concentration ; Larix kaempferi ; Low molecular weight ; Organic aerosol ; Positive correlations ; Secondary organic aerosols ; Temporal variation ; Water-soluble organic carbon ; Oxalic acid ; 1,2 dicarbonyl derivative ; 3 oxopropanoic acid ; 5 oxopentanoic acid ; 6 oxohexanoic acid ; 7 oxoheptanoic acid ; 8 oxooctanoic acid ; 9 oxononanoic acid ; adipic acid ; azelaic acid ; carboxylic acid derivative ; dicarboxylic acid derivative ; glutaric acid ; glyoxylic acid ; isoprene ; malonic acid ; organic carbon ; oxalic acid ; oxocarboxylic acid ; ozone ; pimeric acid ; pinene ; pyruvic acid ; sebacic acid ; suberic acid ; succinic acid ; succinic semialdehyde ; toluene ; unclassified drug ; unsaturated fatty acid ; volatile organic compound ; water soluble organic carbon ; aerosol ; carboxylic acid ; concentration (composition) ; coniferous forest ; fatty acid ; forest ecosystem ; oxalic acid ; oxidation ; ozone ; temporal variation ; terpene ; volatile organic compound ; acidity ; aqueous solution ; Article ; atmosphere ; circadian rhythm ; comparative study ; concentration (parameters) ; controlled study ; day length ; decomposition ; environmental temperature ; forest ; humidity ; Japan ; Larix ; Larix kaempferi ; mass concentration ratio ; molecular weight ; nonhuman ; oxidation ; population abundance ; priority journal ; secondary organic aerosol ; solar radiation ; summer ; suspended particulate matter ; synthesis ; weight, mass and size ; Chubu ; Fuji ; Honshu ; Japan ; Shizuoka [Chubu] ; Larix ; Larix kaempferi
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: To better understand the formation of water-soluble organic aerosols in the forest atmosphere, we measured low molecular weight (LMW) dicarboxylic acids, oxocarboxylic acids, α-dicarbonyls, unsaturated fatty acids (UFAs), and water-soluble organic carbon (WSOC) in aerosols from a Larix kaempferi forest located at the northern slope of Mt. Fuji, Japan, in summer 2012. Concentrations of dicarboxylic acids, oxocarboxylic acids, α-dicarbonyls, and WSOC showed maxima in daytime. Relative abundance of oxalic acid in LMW dicarboxylic acids was on average 52% and its average concentration was 214 ng m−3. We found that diurnal and temporal variations of oxalic acid are different from those of isoprene and α-pinene, whereas biogenic secondary organic aerosols (BSOAs) derived from isoprene and α-pinene showed similar variations with oxalic acid. The mass concentration ratios of oxalic acid/BSOAs were relatively constant, although a large variation in the concentrations of toluene that is an anthropogenic volatile organic compound was observed. These results suggest that formation of oxalic acid is associated with the oxidation of isoprene and α-pinene with O3 and other oxidants in the forest atmosphere. In addition, concentrations of UFAs were observed, for the first time, to decrease dramatically during daytime in the forest. Mass concentration ratios of azelaic acid to UFAs showed a positive correlation with O3, suggesting that UFAs are oxidized to yield azelaic acid, which may be further decomposed to oxalic acid in the forest atmosphere. We found that contributions of oxalic acid to WSOC are significantly high ranging from 3.7 to 9.7% (average 6.0%). This study demonstrates that forest ecosystem is an important source of oxalic acid and other dicarboxylic acids in the atmosphere. © 2017 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82672
Appears in Collections:气候变化事实与影响

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作者单位: Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan; Department of Natural and Environmental Science, Teikyo University of Science, Uenohara, Japan; National Institute for Environmental Studies, Tsukuba, Japan; Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka, Japan; Now at Chubu Institute for Advanced Studies, Chubu University, Kasugai, Japan

Recommended Citation:
Mochizuki T,, Kawamura K,, Miyazaki Y,et al. Secondary formation of oxalic acid and related organic species from biogenic sources in a larch forest at the northern slope of Mt. Fuji[J]. Atmospheric Environment,2017-01-01,166
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