DOI: 10.1016/j.atmosenv.2017.05.034
Scopus记录号: 2-s2.0-85020303179
论文题名: Influence of NH3 on secondary organic aerosols from the ozonolysis and photooxidation of Α-pinene in a flow reactor
作者: Babar Z ; B ; , Park J ; -H ; , Lim H ; -J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 164 起始页码: 71
结束页码: 84
语种: 英语
英文关键词: Brown carbon
; Flow reactor
; NH3
; Optical properties
; Secondary organic aerosol
; α-Pinene
Scopus关键词: Aerosols
; Atmospheric humidity
; Carbon
; Fourier transform infrared spectroscopy
; Free radicals
; Humidity control
; Monoterpenes
; Olefins
; Optical properties
; Ozone
; Photooxidation
; Residence time distribution
; Aging time
; Alpha-pinenes
; Brown carbons
; Flow reactors
; NH<sub>3</sub>
; OH radical
; Secondary organic aerosols
; UV-visible
; Atmospheric movements
; ammonia
; hydroxyl radical
; pinene
; aerosol
; aerosol formation
; ammonia
; brown carbon
; chemical reaction
; equipment
; optical property
; organic compound
; ozone
; photooxidation
; absorption
; ambient air
; aqueous solution
; Article
; batch reactor
; control
; controlled study
; environmental exposure
; humidity
; infrared spectroscopy
; ozonolysis
; photooxidation
; priority journal
; secondary organic aerosol
; temperature
; water vapor
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: This study presents detailed characterizations of a newly-developed flow reactor including (1) residence time distribution measurements, (2) relative humidity (RH) and temperature control, and (3) OH radical exposure range (i.e., atmospheric aging time). Hydroxyl (OH) radical exposures ranged from 8.20 × 1010 to 7.22 × 1011 molecules cm−3 s (0.5–4.9 d of atmospheric aging). In this study, the effects of NH3 gas on the secondary organic aerosol (SOA) formation of α-pinene by dark ozonolysis and photooxidation were investigated using the newly-developed flow reactor. For both dark α-pinene ozonolysis and photooxidation, higher SOA yields were observed in the presence of NH3 than in the absence of NH3. At RH of ∼50%, the SOA yield for ozonolysis and photooxidation in the presence of NH3 increased by 23% and 15% relative to those in the absence of NH3. Similar effects were observed at lower and higher RH conditions. Fourier transform infrared spectroscopy analysis confirmed the presence of nitrogen-containing functional groups in SOA formed in the presence of NH3. The α-pinene SOA formed in the presence of NH3 showed higher absorption and fluorescence for UV-visible radiation than those formed in the absence of NH3. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82526
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea; Mass Spectrometry Research Center, Korea Basic Science Institute, Ochang, South Korea
Recommended Citation:
Babar Z,B,, Park J,et al. Influence of NH3 on secondary organic aerosols from the ozonolysis and photooxidation of Α-pinene in a flow reactor[J]. Atmospheric Environment,2017-01-01,164