DOI: 10.1016/j.atmosenv.2013.11.023
Scopus记录号: 2-s2.0-84889597626
论文题名: Chemical characterisation of semi-volatile and aerosol compounds from the photooxidation of toluene and NOx
作者: White S ; J ; , Jamie I ; M ; , Angove D ; E
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 83 起始页码: 237
结束页码: 244
语种: 英语
英文关键词: Aromatic photooxidation
; Humidity
; Isotopologues
; Organic aerosol
Scopus关键词: Aerosols
; Aromatic compounds
; Atmospheric humidity
; Carboxylic acids
; Chemical compounds
; Functional groups
; Gas chromatography
; Gases
; Photooxidation
; Toluene
; Chamber experiments
; Chemical compositions
; Gas chromatography-mass spectrometries (GC-MS)
; Isotopologues
; Nuclear magnetic resonance(NMR)
; Organic aerosol
; Relative response
; Secondary organic aerosols
; Extraction
; carbonyl derivative
; carboxylic acid
; functional group
; glass fiber
; glyoxylic acid
; hydroxylamine
; n o bistrimethylsilyl trifluoroacetamide
; nitric oxide
; o 2,3,4,5,6 pentafluorobenzylhydroxylamine
; pyruvic acid
; toluene
; trifluoroacetamide derivative
; unclassified drug
; volatile agent
; water
; adhesion
; aerosol
; carboxylic acid
; chemical composition
; filter
; functional group
; humidity
; isotopic analysis
; nuclear magnetic resonance
; photooxidation
; smog
; toluene
; water vapor
; article
; carbon nuclear magnetic resonance
; chemical analysis
; chemical composition
; concentration (parameters)
; controlled study
; filter
; gas
; humidity
; hydrolysis
; isotope labeling
; mass fragmentography
; photooxidation
; priority journal
; proton nuclear magnetic resonance
; secondary organic aerosol
; smog
; 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: The chemical composition of a gas phase and secondary organic aerosol (SOA) mixture from toluene photooxidation in NOx was determined. Aerosol from toluene photooxidation was generated in a smog chamber and was collected onto glass fibre filters along with those gas phase compounds which adhered to the filter. The filter bound organic material was extracted, derivatised with O-2,3,4,5,6-pentafluorobenzyl hydroxylamine (PFBHA) and N,O-bistrimethylsilyl-trifluoroacetamide (BSTFA), then analysed using gas chromatography-mass spectrometry (GC-MS). Compound identification was aided by the use of isotopically-labelled toluene. The effect of humidity on product formation was investigated by raising water vapour concentration in one experiment.Sixty compounds were identified, of which twenty had not been identified from toluene photooxidation previously. Small carboxylic acids and dicarbonyls provided the highest proportion of identifiable compounds by relative response. The use of water to extract the filter samples resulted in much higher relative responses for oxocarboxylic acids, such as glyoxylic acid and pyruvic acid, than has been observed in previous studies. The formation of levulinic acid was determined to be due to the reaction of water with aromatic photooxidation products in the gas phase or particle phase of the chamber experiment. Nuclear magnetic resonance (NMR) was used to determine the functional groups of water-extracted organic material, which indicated that the water-soluble components were comprised of compounds which contain similar functional groups, primarily alcohols and carboxylic acids. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80830
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemistry and Biomolecular Sciences, Macquarie University, NSW 2109, Australia; CSIRO Energy Technology, PO Box 52, North Ryde, NSW 1670, Australia
Recommended Citation:
White S,J,, Jamie I,et al. Chemical characterisation of semi-volatile and aerosol compounds from the photooxidation of toluene and NOx[J]. Atmospheric Environment,2014-01-01,83