DOI: 10.1016/j.atmosenv.2017.06.013
Scopus记录号: 2-s2.0-85020711831
论文题名: Application of VUV-PIMS coupled with GC-MS in chemical characterization, identification and comparative analysis of organic components in both vehicular-derived SOA and haze particles
作者: Zhang P ; , Ma P ; , Zhang H ; , Shu J ; , Yang B ; , Li Z
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 164 起始页码: 250
结束页码: 258
语种: 英语
英文关键词: Derivatization
; Gasoline vehicle exhaust
; Haze
; OH/NO3/O3
; Secondary organic aerosols
Scopus关键词: Aerosols
; Air quality
; Chemical analysis
; Chromatography
; Crashworthiness
; Degradation
; Gas chromatography
; Ionization
; Mass spectrometers
; Mass spectrometry
; Oxidation
; Photoionization
; Volatile organic compounds
; Derivatizations
; Gasoline vehicle
; Haze
; OH/NO<sub>3</sub>/O<sub>3</sub>
; Secondary organic aerosols
; Gasoline
; gasoline
; hydroxyl radical
; volatile organic compound
; aerosol
; air quality
; comparative study
; degradation
; gas chromatography
; haze
; mass spectrometry
; oxidation
; traffic emission
; volatile organic compound
; air quality
; Article
; atmospheric pressure
; chemical composition
; chemical structure
; derivatization
; desorption
; exhaust gas
; haze
; humidity
; ion monitoring
; isomer
; limit of detection
; mass fragmentography
; organic chemistry
; oxidation
; ozonolysis
; particle size
; photooxidation
; precursor
; priority journal
; radical reaction
; retention time
; secondary organic aerosol
; Beijing [China]
; China
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: Gasoline vehicle exhaust is a significant source of volatile organic compounds (VOCs) in megacities. In this study, chemical characterization of secondary aerosol particles from the oxidation of gasoline vehicular exhaust by O3, OH, and NO3 radicals and the airborne aerosol particles collected during a heavy haze episode (23–25 December 2015) in Beijing were elaborately investigated. The secondary organic aerosols (SOAs) collected from the exhaust and airborne aerosol particles were characterized with a newly built vacuum ultraviolet photoionization mass spectrometer (VUV-PIMS) after thermal desorption, and identified by gas chromatography mass spectrometry (GC-MS). The obtained photoionization mass spectra revealed that the SOAs from the oxidation of gasoline vehicular exhaust and airborne aerosol particles possess a series of common characteristic mass peaks at m/z 98, 112, 126, and 140. The components at m/z 98, 112, 126, 140 were further identified to be carbonyl species after PFBHA derivatization followed by GC-MS analyses. The carbonyl species from exhaust SOAs were found to be responsible for 51.7%, 57.5%, 36.3%, and 27.9% of the chemical components in haze particles at m/z 98, 112, 126, and 140, respectively, which indicates that these SOA components from the oxidation of gasoline vehicular exhaust are a major factor that affects the air quality in Beijing. Among the exhaust SOAs, the carbonyl species detected simultaneously in two (P(O3/OH)) or three kinds of exhaust oxidation reactions (P(O3/NO3/OH)) make a significant contributions to these carbonyl species in haze particles (10.6% for m/z 98, 18.3% for m/z 112, 23.4% for m/z 126, and 20.5% for m/z 140). These results implies that the unsaturated VOCs (i.e. alkenes) from exhaust may be one kind of important SOA precursor and that their chemical degradation in the atmosphere may have an important impact on urban air quality in heavy polluted cities such as Beijing, especially during severe winter haze weather. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82394
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: State Key Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Zhang P,, Ma P,, Zhang H,et al. Application of VUV-PIMS coupled with GC-MS in chemical characterization, identification and comparative analysis of organic components in both vehicular-derived SOA and haze particles[J]. Atmospheric Environment,2017-01-01,164