DOI: 10.1016/j.atmosenv.2017.10.016
Scopus记录号: 2-s2.0-85032213271
论文题名: Concentration, size distribution and dry deposition of amines in atmospheric particles of urban Guangzhou, China
作者: Liu F ; , Bi X ; , Zhang G ; , Peng L ; , Lian X ; , Lu H ; , Fu Y ; , Wang X ; , Peng P ; , Sheng G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 171 起始页码: 279
结束页码: 288
语种: 英语
英文关键词: Amines
; Ammonium
; Dry deposition
; Size distribution
; WSOC
; WSON
Scopus关键词: Carbon
; Chlorine compounds
; Deposition
; Gas chromatography
; Organic carbon
; Organic compounds
; Particles (particulate matter)
; Silicon compounds
; Size distribution
; Ammonium
; Dry deposition
; Dry deposition fluxes
; Gas chromatography-mass spectrometers
; Secondary organic aerosols
; Water-soluble organic carbon
; WSOC
; WSON
; Amines
; aliphatic amine
; amine
; benzene
; butylamine
; chloride
; dibutylamine
; diethylamine
; dimethylamine
; ethylamine
; heterocyclic amine
; methylamine
; morpholine
; organic carbon
; organic nitrogen
; propylamine
; pyrrolidine derivative
; sulfone
; unclassified drug
; ammonium
; concentration (composition)
; dry deposition
; organic carbon
; organic nitrogen
; organic nitrogen compound
; particle size
; particulate matter
; size distribution
; urban atmosphere
; urban pollution
; Article
; atmospheric deposition
; autumn
; China
; comparative study
; concentration (parameters)
; controlled study
; derivatization
; dry deposition
; mass fragmentography
; maximum concentration
; particle size
; particulate matter
; priority journal
; secondary organic aerosol
; thermodynamics
; urban area
; China
; Guangdong
; Guangzhou
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: Size-segregated PM10 samples were collected in Guangzhou, China during autumn of 2014. Nine amines, including seven aliphatic amines and two heterocyclic amines, were detected using a gas chromatography-mass spectrometer after derivatization by benzenesulfonyl chloride. The total concentration of the nine amines (Ʃamines) was 79.6–140.9 ng m−3 in PM10. The most abundant species was methylamine (MA), which had a concentration of 29.2–70.1 ng m−3. MA, dimethylamine (DMA), diethylamine (DEA) and dibutylamine (DBA) were the predominant amines in the samples and accounted for approximately 80% of Ʃamines in each size segment. Two heterocyclic amines, pyrrolidine (PYR) and morpholine (MOR), were detected in all samples and had average concentrations of 1.14 ± 0.37 and 1.89 ± 0.64 ng m−3, respectively, in particles with aerodynamic diameters < 3 μm. More than 80% of Ʃamines were found in particles with diameters <1.5 μm, indicating that amines are mainly enriched in fine particles. All amines exhibited a bimodal distribution with a fine mode at 0.49–1.5 μm and a coarse mode at 7.2–10 μm. The maximum contributions of amines to particles (0.21%) and amines-N to water-soluble organic nitrogen (WSON) (3.1%) were found at the sizes < 0.49 μm. The maximum contribution of amines-C to water-soluble organic carbon (WSOC) was 1.6% over the size range of 0.95–1.5 μm. The molar ratio of Ʃamines to ammonium ranged from 0.0068 to 0.0107 in particles with diameters <1.5 μm, and the maximum ratio occurred in the smallest particles (diameter< 0.49 μm). The average dry deposition flux and velocity of Ʃamines in PM10 were 7.9 ± 1.6 μg m−2 d−1 and 0.084 ± 0.0021 cm s−1, respectively. The results of this study provide essential information on the contribution of amines to secondary organic aerosols and dry removal mechanisms in urban areas. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82192
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; Graduate University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Liu F,, Bi X,, Zhang G,et al. Concentration, size distribution and dry deposition of amines in atmospheric particles of urban Guangzhou, China[J]. Atmospheric Environment,2017-01-01,171