DOI: 10.1002/2016GL068207
论文题名: Photochemical processing of diesel fuel emissions as a large secondary source of isocyanic acid (HNCO)
作者: Link M.F. ; Friedman B. ; Fulgham R. ; Brophy P. ; Galang A. ; Jathar S.H. ; Veres P. ; Roberts J.M. ; Farmer D.K.
刊名: Geophysical Research Letters
ISSN: 0094-9068
EISSN: 1944-8799
出版年: 2016
卷: 43, 期: 8 起始页码: 4033
结束页码: 4041
语种: 英语
英文关键词: diesel emissions
; isocyanic acid
; photochemistry
Scopus关键词: Diesel fuels
; Engines
; Mass spectrometry
; Photochemical reactions
; Colorado state universities
; Diesel emission
; Engine operating conditions
; Ionization time of flight mass spectrometries
; Isocyanic acids
; Photochemical processing
; Photochemical production
; Photochemical sources
; Fuels
英文摘要: Isocyanic acid (HNCO) is a well-known air pollutant that affects human health. Biomass burning, smoking, and combustion engines are known HNCO sources, but recent studies suggest that secondary production in the atmosphere may also occur. We directly observed photochemical production of HNCO from the oxidative aging of diesel exhaust during the Diesel Exhaust Fuel and Control experiments at Colorado State University using acetate ionization time-of-flight mass spectrometry. Emission ratios of HNCO were enhanced, after 1.5 days of simulated atmospheric aging, from 50 to 230 mg HNCO/kg fuel at idle engine operating conditions. Engines operated at higher loads resulted in less primary and secondary HNCO formation, with emission ratios increasing from 20 to 40 mg HNCO/kg fuel under 50% load engine operating conditions. These results suggest that photochemical sources of HNCO could be more significant than primary sources in urban areas. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84968779798&doi=10.1002%2f2016GL068207&partnerID=40&md5=c4ab2e923fadddaa574c2dabb72aee68
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10031
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Chemistry, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Link M.F.,Friedman B.,Fulgham R.,et al. Photochemical processing of diesel fuel emissions as a large secondary source of isocyanic acid (HNCO)[J]. Geophysical Research Letters,2016-01-01,43(8).