DOI: 10.1016/j.atmosenv.2019.117196
论文题名: Quantifying atmospheric reactive nitrogen concentrations, dry deposition, and isotope dynamics surrounding a Marcellus Shale well pad
作者: Coughlin J.G. ; Elliott E.M. ; Rose L.A. ; Pekney N.J. ; Reeder M.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 223 语种: 英语
英文关键词: Ammonia
; Atmospheric chemistry
; Dynamics
; Extraction
; Gas emissions
; Isotopes
; Natural gas
; Nitrogen
; Nitrogen oxides
; Roads and streets
; Shale
; Shale gas
; Background subtraction method
; Best management practices
; Marcellus shales
; Natural gas extraction
; Nitrogen deposition
; Reactive nitrogen
; Stable isotopes
; Unconventional natural gas
; Natural gas wells
; ammonia
; fossil fuel
; natural gas
; nitric acid
; nitrogen oxide
; ozone
; stable isotope
; concentration (composition)
; dry deposition
; emission inventory
; isotopic analysis
; natural gas
; nitric oxide
; quantitative analysis
; source apportionment
; air monitoring
; air sampling
; ambient air
; atmospheric deposition
; chemoluminescence
; combustion
; comparative study
; dry deposition
; fracking
; highway
; isotope analysis
; meteorology
; nitrogen concentration
; nitrogen deposition
; priority journal
; wind speed
学科: Atmospheric chemistry
; Marcellus shale
; Nitrogen deposition
; Reactive nitrogen
; Stable isotope
中文摘要: Unconventional natural gas (UNG) extraction activities have become important contributors to regional NOx emissions inventories. Currently, there is a knowledge gap in the amount of total N deposition surrounding well pads undergoing UNG extraction despite the fact that some areas with extensive natural gas extraction activity are already in exceedance of nitrogen critical loads. In this study, we measured the magnitude of total dry N deposition from NO2, HNO3, and NH3 attributable to the development of two UNG wells at a Marcellus Shale well pad study site. This study documents concentrations, deposition fluxes, and isotope values of NO2, HNO3, O3, and NH3 up- and down-wind along a 750-m well pad passive sampling transect across a 16-acre well pad containing two unconventional wells during all phases of development and extraction comprising fifteen distinct sampling periods. An access road transect was also utilized to explore reactive N dynamics in a near-road environment on the well pad where NO2 concentration and isotope dynamics were highly correlated with daily traffic count (r2 = 0.78–0.88, p < 0.01). An onsite chemiluminescent NO2 source apportionment model was compared against δ15N–NO2 and δ18O–NO2 source apportionment models (r2 = 0.57 and 0.82 respectively), demonstrating the possible utility of δ18O–NO2 as a source apportionment tool in near-source environments. In addition, the δ15N–NO2 source apportionment method compared well against a background-subtraction method (slope = 0.82, r2 = 0.88, p < 0.001) during non-wintertime conditions and was used to find N loadings directly attributable to well pad activities. In total, the total N deposition across the transect, attributable to well pad activities, utilizing industry's best management practices, ranged from 0.16 to 0.55 kg N ha−1 yr−1. This magnitude of well pad attributable N deposition is high enough to result in exceedances of nitrogen critical loads in areas with high well count densities and high baseline N deposition. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160554
Appears in Collections: 气候变化与战略
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作者单位: Department of Geology and Environmental Science, University of Pittsburgh, Pittsburgh, PA, United States; Department of Forest Resources, University of Minnesota, Saint Paul, MN, United States; U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, PA, United States; AECOM, Pittsburgh, PA, United States
Recommended Citation:
Coughlin J.G.,Elliott E.M.,Rose L.A.,et al. Quantifying atmospheric reactive nitrogen concentrations, dry deposition, and isotope dynamics surrounding a Marcellus Shale well pad[J]. Atmospheric Environment,2020-01-01,223