DOI: 10.1016/j.atmosenv.2015.06.043
Scopus记录号: 2-s2.0-84936759211
论文题名: Investigating the water-soluble organic functionality of urban aerosols using two-dimensional correlation of solid-state 13C NMR and FTIR spectral data
作者: Duarte R ; M ; B ; O ; , Freire S ; M ; S ; C ; , Duarte A ; C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 116 起始页码: 245
结束页码: 252
语种: 英语
英文关键词: CP-MAS 13C NMR spectroscopy
; FTIR-ATR spectroscopy
; Two-dimensional correlation spectroscopy
; Urban organic aerosols
; Water-soluble organic matter
Scopus关键词: Aerosols
; Biogeochemistry
; Biological materials
; Carbon
; Combustion
; Functional groups
; Magic angle spinning
; Nuclear magnetic resonance spectroscopy
; Organic compounds
; Attenuated total reflectance
; Cross polarization magic-angle spinnings
; Fourier transform infra reds
; FTIR-ATR spectroscopy
; Nuclear magnetic resonance(NMR)
; Organic aerosol
; Two-dimensional correlation spectroscopy
; Water-soluble organic matter
; Fourier transform infrared spectroscopy
; carboxylic acid
; hydroxyl group
; lignin
; organic matter
; aerosol
; aerosol composition
; air temperature
; carbon isotope
; carboxylic acid
; combustion
; correlation
; data set
; FTIR spectroscopy
; hydrocarbon
; hydrophobicity
; hydroxyl radical
; nuclear magnetic resonance
; solubilization
; spectroscopy
; two-dimensional modeling
; urban atmosphere
; aerosol
; air temperature
; Article
; biomass
; carbon nuclear magnetic resonance
; combustion
; correlation analysis
; infrared spectroscopy
; priority journal
; season
; solid state
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: Two-dimensional (2D) correlation spectroscopy, applied to one-dimensional solid-state cross polarization magic angle spinning (CP-MAS) 13C nuclear magnetic resonance (NMR), Fourier transform infrared coupled to attenuated total reflectance (FTIR-ATR), and the combination of CP-MAS 13C NMR and FTIR-ATR data, has been used to glean new structural information on the most hydrophobic water-soluble organic matter (WSOM) from fine urban air particles collected during different seasons. CP-MAS 13C NMR analysis confirmed that unsubstituted saturated aliphatics, aromatics, oxygenated aliphatics, and carboxylic acids accounted for most (84-92%) of the characterized carbon functional groups. Applying 2D correlation spectroscopy to CP-MAS 13C NMR and FTIR-ATR spectra indicates an increase in the contribution of hydroxyl and carboxylic groups to the aliphatic component with increasing air temperature, suggesting the photo-chemical origin of these WSOM structures. Urban samples from colder periods are clearly impacted by biomass combustion sources, although the presence of aged and processed organic aerosols cannot be ruled out. Using 2D FTIR-13C NMR hetero-spectral correlation spectroscopy, it has been demonstrated that the studied WSOM samples consists of at least two different classes of compounds: (i) an aliphatic component rich in both carboxylic and hydroxyl functional groups, and (ii) lignin-derived structures. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81617
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemistry and CESAM, University of Aveiro, Aveiro, Portugal
Recommended Citation:
Duarte R,M,B,et al. Investigating the water-soluble organic functionality of urban aerosols using two-dimensional correlation of solid-state 13C NMR and FTIR spectral data[J]. Atmospheric Environment,2015-01-01,116