DOI: 10.1016/j.atmosenv.2015.09.061
Scopus记录号: 2-s2.0-84942693470
论文题名: Dimethylamine as a major alkyl amine species in particles and cloud water: Observations in semi-arid and coastal regions
作者: Youn J ; -S ; , Crosbie E ; , Maudlin L ; C ; , Wang Z ; , Sorooshian A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 122 语种: 英语
英文关键词: Aerosol
; Amines
; Biomass burning
; Cloud water
; Dimethylamine
; Marine
; MOUDI
Scopus关键词: Amines
; Trace elements
; Biomass-burning
; Cloud water
; Dimethylamines
; Marine
; MOUDI
; Aerosols
; dimethylamine
; sulfate
; trace element
; vanadium
; water
; aerosol
; aerosol property
; ammonium compound
; biogenic emission
; biomass burning
; cloud water
; coastal zone
; concentration (composition)
; particle size
; semiarid region
; aerosol
; Article
; atmospheric deposition
; cloud
; coastal waters
; evaporation
; marine environment
; meteorological phenomena
; priority journal
; volatilization
; Arizona
; California
; Tucson
; United States
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: Aerosol and cloud water measurements of dimethylamine (DMA), the most abundant amine in this study, were conducted in semi-arid (Tucson, Arizona) and marine (Nucleation in California Experiment, NiCE; central coast of California) areas. In both regions, DMA exhibits a unimodal aerosol mass size distribution with a dominant peak between 0.18 and 0.56 μm. Particulate DMA concentrations increase as a function of marine biogenic emissions, sulfate, BVOC emissions, and aerosol-phase water. Such data supports biogenic sources of DMA, aminium salt formation, and partitioning of DMA to condensed phases. DMA concentrations exhibit positive correlations with various trace elements and most especially vanadium, which warrants additional investigation. Cloud water DMA levels are enhanced significantly during wildfire periods unlike particulate DMA levels, including in droplet residual particles, due to effective dissolution of DMA into cloud water and probably DMA volatilization after drop evaporation. DMA:NH4+ molar ratios peak between 0.18 and 1.0 μm depending on the site and time of year, suggesting that DMA competes better with NH3 in those sizes in terms of reactive uptake by particles. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81409
Appears in Collections: 气候变化事实与影响
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作者单位: Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, United States; Department of Atmospheric Sciences, University of Arizona, Tucson, AZ, United States; Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, United States
Recommended Citation:
Youn J,-S,, Crosbie E,et al. Dimethylamine as a major alkyl amine species in particles and cloud water: Observations in semi-arid and coastal regions[J]. Atmospheric Environment,2015-01-01,122