DOI: 10.1002/jgrd.50722
论文题名: Volatile organic compound distributions during the NACHTT campaign at the Boulder Atmospheric Observatory: Influence of urban and natural gas sources
作者: Swarthout R.F. ; Russo R.S. ; Zhou Y. ; Hart A.H. ; Sive B.C.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 18 起始页码: 10614
结束页码: 10637
语种: 英语
英文关键词: emission fluxes
; hydroxyl radical reactivity
; natural gas
; regional air quality
; vertical profiles
; volatile organic compounds
Scopus关键词: Air quality
; Gas chromatography
; Mixing
; Natural gas
; Natural gas well production
; Observatories
; Paraffins
; Particulate emissions
; Propane
; Volatile organic compounds
; Emission fluxes
; Hydroxyl radicals
; Natural-gas production
; Non-methane hydrocarbons
; Petrochemical industry
; Regional air quality
; Total OH reactivities
; Vertical profile
; Urban growth
; air quality
; alkane
; atmospheric chemistry
; atmospheric pollution
; dimethylsulfide
; estimation method
; gas production
; mixing
; natural gas
; petrochemical industry
; urban area
; volatile organic compound
; Colorado
; United States
英文摘要: A comprehensive suite of volatile organic compounds (VOCs) was measured at the semirural Boulder Atmospheric Observatory (BAO) in northeast Colorado during the Nitrogen, Aerosol Composition, and Halogens on a Tall Tower (NACHTT) campaign during the winter of 2011. A signature of elevated nonmethane hydrocarbon (NMHC) mixing ratios was observed throughout the campaign. The C2 -C5 alkane mixing ratios were an order of magnitude greater than the regional background. Light alkane mixing ratios were similar to those at urban sites impacted by petrochemical industry emissions with ethane and propane reaching maximums of over 100 ppbv. The mean (± standard deviation) calculated total OH reactivity (7.0 ± 5.0 s-1) was also similar to urban sites. Analysis of VOC wind direction dependence, emission ratios with tracer compounds, and vertical profiles up to 250 m implicated regional natural gas production activities as the source of the elevated VOCs to the northeast of BAO and urban combustion emissions as the major VOC source to the south of BAO. Elevated acetonitrile and dimethyl sulfide mixing ratios were also associated with natural gas emissions. Fluxes of natural gas associated NMHCs were determined to estimate regional emission rates which ranged from 40 ± 14 Gg yr-1 for propane to 0.03 ± 0.01 Gg yr -1 for n-nonane. These emissions have the potential to impact downwind air quality as natural gas associated NMHCs comprised ≈24% of the calculated OH reactivity. The measurements described here provide a baseline for determining the efficacy of future policies designed to control emissions from natural gas production activities. Key Points A comprehensive suite of VOCs was measured near active natural gas productionNatural gas production resulted in elevated mixing ratios of C2-C8 alkanes.Regional emission fluxes and hydroxyl radical reactivity were estimated ©2013. American Geophysical Union. All Rights Reserved. 资助项目: ANT-1127774
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63314
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Natural Resources and Earth Systems Science Program, University of New Hampshire, Durham, NH, United States; Department of Chemistry, Appalachian State University, Boone, NC, United States; Kleinschmidt Associates Maine, Pittsfield, United States; Department of Chemistry, University of New Hampshire, Durham, NH, United States; Environmental Science Program, Appalachian State University, 525 Rivers St., Boone, NC 28608, United States
Recommended Citation:
Swarthout R.F.,Russo R.S.,Zhou Y.,et al. Volatile organic compound distributions during the NACHTT campaign at the Boulder Atmospheric Observatory: Influence of urban and natural gas sources[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(18)