DOI: 10.1016/j.atmosenv.2016.10.030
Scopus记录号: 2-s2.0-84992376533
论文题名: Enhanced concentrations of reactive nitrogen species in wildfire smoke
作者: Benedict K ; B ; , Prenni A ; J ; , Carrico C ; M ; , Sullivan A ; P ; , Schichtel B ; A ; , Collett J ; L ; , Jr
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 148 起始页码: 8
结束页码: 15
语种: 英语
英文关键词: Ammonia
; Biomass burning
; Emissions
; Reactive nitrogen
Scopus关键词: Ammonia
; Fires
; Gas dynamics
; Mixing
; Nitrogen compounds
; Particulate emissions
; Smoke
; Atmospheric science
; Biomass-burning
; Colorado state universities
; Gas-phase species
; Measurement sites
; Reactive nitrogen
; Reactive nitrogen species
; Smoldering combustion
; Nitrogen
; acetaldehyde
; ammonia
; ammonium nitrate
; calcium ion
; carbon monoxide
; hydrogen cyanide
; isocyanate
; isoprene
; levoglucosan
; nitrogen derivative
; nitrogen oxide
; organonitrogen derivative
; pinene
; reactive nitrogen species
; sodium
; sulfate
; air quality
; ammonia
; atmospheric plume
; atmospheric pollution
; biomass burning
; concentration (composition)
; high temperature
; nitrogen
; particulate matter
; smoke
; wildfire
; Article
; biomass
; catalyst
; combustion
; concentration process
; controlled study
; environmental monitoring
; fire
; high temperature
; particulate matter
; plume
; priority journal
; smoke
; summer
; wildfire
; Colorado
; Fort Collins
; United States
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: During the summer of 2012 the Hewlett Gulch and High Park wildfires burned an area of 400 km2 northwest of Fort Collins, Colorado. These fires both came within 20 km of the Department of Atmospheric Science at Colorado State University, allowing for extensive measurements of smoke-impacted air masses over the course of several weeks. In total, smoke plumes were observed at the measurement site for approximately 125 h. During this time, measurements were made of multiple reactive nitrogen compounds, including gas phase species NH3, NOx, and HNO3, and particle phase species NO3 − and NH4 +, plus an additional, unspeciated reactive nitrogen component that is measured by high temperature conversion over a catalyst to NO. Concurrent measurements of CO, levoglucosan and PM2.5 served to confirm the presence of smoke at the monitoring site. Significant enhancements were observed for all of the reactive nitrogen species measured in the plumes, except for NH4 + which did not show enhancements, likely due to the fresh nature of the plume, the presence of sufficient regional ammonia to have already neutralized upwind sulfate, and the warm conditions of the summer measurement period which tend to limit ammonium nitrate formation. Excess mixing ratios for NH3 and NOx relative to excess mixing ratios of CO in the smoke plumes, ΔNH3/ΔCO (ppb/ppb) and ΔNOx/ΔCO (ppb/ppb), were determined to be 0.027 ± 0.002 and 0.0057 ± 0.0007, respectively. These ratios suggest that smoldering combustion was the dominant source of smoke during our plume interceptions. Observations from prior relevant laboratory and field measurements of reactive nitrogen species are also briefly summarized to help create a more comprehensive picture of reactive nitrogen and fire. © 2016 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82386
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Science, Colorado State University, Campus Delivery 1371, Fort Collins, CO, United States; National Park Service, Air Resources Division, Lakewood, CO, United States; New Mexico Institute of Mining and Technology, Socorro, NM, United States; National Park Service, Air Resources Division, Fort Collins, CO, United States
Recommended Citation:
Benedict K,B,, Prenni A,et al. Enhanced concentrations of reactive nitrogen species in wildfire smoke[J]. Atmospheric Environment,2017-01-01,148