DOI: 10.1016/j.atmosenv.2017.06.021
Scopus记录号: 2-s2.0-85020818223
论文题名: Isotopic signatures of anthropogenic CH4 sources in Alberta, Canada
作者: Lopez M ; , Sherwood O ; A ; , Dlugokencky E ; J ; , Kessler R ; , Giroux L ; , Worthy D ; E ; J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 164 起始页码: 280
结束页码: 288
语种: 英语
英文关键词: AirCore
; Methane isotopic signature
; Oil and natural gas industry
; Plume mapping
Scopus关键词: Gas industry
; Gases
; Isotopes
; Methane
; Natural gas
; Oil tanks
; Petroleum reservoir engineering
; Air-core
; Ambient measurement
; Anthropogenic sources
; Atmospheric measurement
; Isotopic signatures
; Oil and natural gas
; Source discrimination
; Thermogenic origin
; Gas emissions
; ethane
; fossil fuel
; isotope
; methane
; natural gas
; anthropogenic source
; atmospheric plume
; atmospheric pollution
; carbon emission
; ethane
; gas industry
; industrial emission
; isotopic analysis
; measurement method
; methane
; methanogenesis
; microbial activity
; oil industry
; pollutant source
; stable isotope
; air sampling
; Alberta
; Article
; atmosphere
; beef cattle
; landfill
; methanogenesis
; oil industry
; plume
; priority journal
; Alberta
; Canada
; Bos
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: A mobile system was used for continuous ambient measurements of stable CH4 isotopes (12CH4 and 13CH4) and ethane (C2H6). This system was used during a winter mobile campaign to investigate the CH4 isotopic signatures and the C2H6/CH4 ratios of the main anthropogenic sources of CH4 in the Canadian province of Alberta. Individual signatures were derived from δ13CH4 and C2H6 measurements in plumes arriving from identifiable single sources. Methane emissions from beef cattle feedlots (n = 2) and landfill (n = 1) had δ13CH4 signatures of −66.7 ± 2.4‰ and −55.3 ± 0.2‰, respectively. The CH4 emissions associated with the oil or gas industry had distinct δ13CH4 signatures, depending on the formation process. Emissions from oil storage tanks (n = 5) had δ13CH4 signatures ranging from −54.9 ± 2.9‰ to −60.6 ± 0.6‰ and non-detectable C2H6, characteristic of secondary microbial methanogenesis in oil-bearing reservoirs. In contrast, CH4 emissions associated with natural gas facilities (n = 8) had δ13CH4 signatures ranging from −41.7 ± 0.7‰ to −49.7 ± 0.7‰ and C2H6/CH4 molar ratios of 0.10 for raw natural gas to 0.04 for processed/refined natural gas, consistent with thermogenic origins. These isotopic signatures and C2H6/CH4 ratios have been used for source discrimination in the weekly atmospheric measurements of stable CH4 isotopes over a two-month winter period at the Lac La Biche (LLB) measurement station, located in Alberta, approximately 200 km northeast of Edmonton. The average signature of −59.5 ± 1.4‰ observed at LLB is likely associated with transport of air after passing over oil industry sources located south of the station. © 2017 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82400
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Environment and Climate Change Canada, Climate Research Division, Climate Chemistry Research Section, 4905 Dufferin St., Toronto, Ontario, Canada; Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, United States; US National Oceanic and Atmospheric Administration, Earth System Research Laboratory, Boulder, CO, United States; Laboratoire des Sciences du Climat et de l'Environnement (LSCE), Unité mixte CNRS-CEA-UVSQ, Gif-sur-Yvette, France
Recommended Citation:
Lopez M,, Sherwood O,A,et al. Isotopic signatures of anthropogenic CH4 sources in Alberta, Canada[J]. Atmospheric Environment,2017-01-01,164