DOI: 10.1016/j.atmosenv.2017.10.026
Scopus记录号: 2-s2.0-85032016845
论文题名: Enhanced levels of atmospheric low-molecular weight monocarboxylic acids in gas and particulates over Mt. Tai, North China, during field burning of agricultural wastes
作者: Mochizuki T ; , Kawamura K ; , Nakamura S ; , Kanaya Y ; , Wang Z
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 171 起始页码: 237
结束页码: 247
语种: 英语
英文关键词: Acetic acid
; Formic acid
; Gas/particle partitioning
; Lactic acid
; North East China
; Wheat straw burning
Scopus关键词: Acetic acid
; Agricultural wastes
; Agriculture
; Formic acid
; Gas dynamics
; Lactic acid
; Molecular weight
; Organic acids
; pH
; Potash
; Quartz
; Straw
; Capillary gas chromatography
; East China
; Gas/particle partitioning
; Low molecular weight
; Monocarboxylic acids
; Terrestrial ecosystems
; Volatile organic acid
; Wheat straws
; Gas chromatography
; acetic acid
; carbon monoxide
; carboxylic acid
; formic acid
; lactic acid
; acetic acid
; agricultural emission
; atmospheric chemistry
; atmospheric pollution
; biomass burning
; carboxylic acid
; formic acid
; gas
; molecular analysis
; particulate matter
; partitioning
; straw
; agricultural waste
; Article
; atmosphere
; capillary gas chromatography
; China
; controlled study
; environmental temperature
; gas
; humidity
; Japan
; limit of detection
; meteorology
; molecular weight
; oxidation
; particle size
; priority journal
; vapor pressure
; wind
; China
; North China Plain
; Shandong
; Tai Shan
; Triticum aestivum
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 understand the source and atmospheric behaviour of low molecular weight monocarboxylic acids (monoacids), gaseous (G) and particulate (P) organic acids were collected at the summit of Mt. Tai in the North China Plain (NCP) during field burning of agricultural waste (wheat straw). Particulate organic acids were collected with neutral quartz filter whereas gaseous organic acids were collected with KOH-impregnated quartz filter. Normal (C1-C10), branched (iC4-iC6), hydroxy (lactic and glycolic), and aromatic (benzoic) monoacids were determined with a capillary gas chromatography employing p-bromophenacyl esters. We found acetic acid as the most abundant gas-phase species whereas formic acid is the dominant particle-phase species. Concentrations of formic (G/P 1 570/1 410 ng m−3) and acetic (3 960/1 120 ng m−3) acids significantly increased during the enhanced field burning of agricultural wastes. Concentrations of formic and acetic acids in daytime were found to increase in both G and P phases with those of K+, a field-burning tracer (r = 0.32–0.64). Primary emission and secondary formation of acetic acid is linked with field burning of agricultural wastes. In addition, we found that particle-phase fractions (Fp = P/(G + P)) of formic (0.50) and acetic (0.31) acids are significantly high, indicating that semi-volatile organic acids largely exist as particles. Field burning of agricultural wastes may play an important role in the formation of particulate monoacids in the NCP. High levels (917 ng m−3) of particle-phase lactic acid, which is characteristic of microorganisms, suggest that microbial activity associated with terrestrial ecosystem significantly contributes to the formation of organic aerosols. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82161
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; Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan; Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; School of Food and Nutritional Sciences, University of Shizuoka, Shizuoka, Japan; Chubu Institute for Advanced Studies, Chubu University, Kasugai, Japan
Recommended Citation:
Mochizuki T,, Kawamura K,, Nakamura S,et al. Enhanced levels of atmospheric low-molecular weight monocarboxylic acids in gas and particulates over Mt. Tai, North China, during field burning of agricultural wastes[J]. Atmospheric Environment,2017-01-01,171