气候变化领域集成服务门户(CCPortal): Molecular characterization of polar organic aerosol constituents in off-road engine emissions using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS): implications for source apportionment

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DOI	10.5194/acp-19-13945-2019
	Molecular characterization of polar organic aerosol constituents in off-road engine emissions using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS): implications for source apportionment
	Cui M.; Li C.; Chen Y.; Zhang F.; Li J.; Jiang B.; Mo Y.; Li J.; Yan C.; Zheng M.; Xie Z.; Zhang G.; Zheng J.
发表日期	2019
ISSN	16807316
起始页码	13945
结束页码	13956
卷号	19 期号:22
英文摘要	The molecular compositions of polar organic compounds (POCs) in particles emitted from various vessels and excavators were characterized using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), and possible molecular structures of POCs were proposed. POCs were extracted with purified water and sorted by elemental composition into three groups: CHO, CHON, and S-containing compounds (CHONS and CHOS). The results show the following. (i) CHO (accounting for 49% of total POCs in terms of peak response) was the most abundant group for all tested off-road engines, followed by CHON (33 %) and CHOS (35 %) for diesel and HFO (heavy-fueloil)- fueled off-road engines. (ii) The abundance and structure of the CHON group in water extracts were different in terms of engine type and load. The relative peak response of CHON was the highest for excavator emissions in working mode, compared to the idling and moving modes. Furthermore, dinitrophenol and methyl dinitrophenol were potentially the most abundant emission species for high-rated speed excavators, while nitronaphthol and methyl nitronaphthol were more important for low-rated speed vessels. (iii) The composition and structure of the S-containing compounds were directly influenced by fuel oil characteristics (sulfur content and aromatic ring), with more condensed aromatic rings in the S-containing compounds proposed in HFO-fueled vessel emissions. More abundant aliphatic chains were inferred in diesel equipment emissions. Overall, higher fractions of condensed hydrocarbons and aromatic rings in POCs emitted from vessels using HFO cause strong optical absorption capacity. Different structures in POCs could provide a direction for qualitative and quantitative analysis of organic compounds as tracers to distinguish these emissions from diesel or HFO-fueled off-road engines. © Author(s) 2019.
语种	英语
scopus关键词	aerosol; FTIR spectroscopy; molecular analysis; organic compound; polar meteorology; source apportionment; tracer; traffic emission
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144034
作者单位	College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; School of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China; SKL-ESPC and BIC-EAST, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Centre for Materials and Coastal Research, Institute of Coastal Research, Helmholtz-Zentrum Geesthacht, Geesthacht, 21502, Germany
推荐引用方式 GB/T 7714	Cui M.,Li C.,Chen Y.,et al. Molecular characterization of polar organic aerosol constituents in off-road engine emissions using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS): implications for source apportionment[J],2019,19(22).
APA	Cui M..,Li C..,Chen Y..,Zhang F..,Li J..,...&Zheng J..(2019).Molecular characterization of polar organic aerosol constituents in off-road engine emissions using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS): implications for source apportionment.Atmospheric Chemistry and Physics,19(22).
MLA	Cui M.,et al."Molecular characterization of polar organic aerosol constituents in off-road engine emissions using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS): implications for source apportionment".Atmospheric Chemistry and Physics 19.22(2019).