| DOI: | 10.1016/j.atmosenv.2015.03.029
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| Scopus记录号: | 2-s2.0-84926350734
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| 论文题名: | Plume mapping and isotopic characterisation of anthropogenic methane sources |
| 作者: | Zazzeri G; , Lowry D; , Fisher R; E; , France J; L; , Lanoisellé M; , Nisbet E; G
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| 刊名: | Atmospheric Environment
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| ISSN: | 0168-2563
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| EISSN: | 1573-515X
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| 出版年: | 2015
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| 卷: | 110 | | 起始页码: | 151
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| 结束页码: | 162
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| 语种: | 英语
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| 英文关键词: | Methane isotopes
; Picarro mobile
; Plume mapping
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| Scopus关键词: | Absorption spectroscopy
; Atmospheric chemistry
; Budget control
; Coal mines
; Gas chromatography
; Gas emissions
; Global positioning system
; Isotopes
; Land fill
; Light measurement
; Mapping
; Mass spectrometry
; Spectroscopy
; Uncertainty analysis
; Atmospheric methanes
; Cavity ring down spectroscopies
; Gas chromatography-isotope-ratio mass spectrometries
; Isotopic measurement
; Methane isotopes
; Picarro mobile
; Relative uncertainty
; Stable-isotope analysis
; Methane
; carbon 13
; methane
; natural gas
; stable isotope
; anemometer
; anthropogenic source
; atmospheric gas
; atmospheric plume
; coal mine
; emission inventory
; GPS
; isotopic analysis
; landfill
; methane
; air monitoring
; air sampling
; anemometry
; Article
; coal mining
; continuous flow gas chromatography isotope ratio mass spectrometry
; controlled study
; exhaust gas
; gas
; global positioning system
; isotope analysis
; landfill
; mass fragmentography
; North Sea
; plume dispersion
; pollution monitoring
; priority journal
; United Kingdom
; Atlantic Ocean
; North Sea
; United Kingdom
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| Scopus学科分类: | Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
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| 英文摘要: | Methane stable isotope analysis, coupled with mole fraction measurement, has been used to link isotopic signature to methane emissions from landfill sites, coal mines and gas leaks in the United Kingdom. A mobile Picarro G2301 CRDS (Cavity Ring-Down Spectroscopy) analyser was installed on a vehicle, together with an anemometer and GPS receiver, to measure atmospheric methane mole fractions and their relative location while driving at speeds up to 80 kph. In targeted areas, when the methane plume was intercepted, air samples were collected in Tedlar bags, for δ13C-CH4 isotopic analysis by CF-GC-IRMS (Continuous Flow Gas Chromatography-Isotope Ratio Mass Spectrometry). This method provides high precision isotopic values, determining δ13C-CH4 to ±0.05 per mil. The bulk signature of the methane plume into the atmosphere from the whole source area was obtained by Keeling plot analysis, and a δ13C-CH4 signature, with the relative uncertainty, allocated to each methane source investigated. Both landfill and natural gas emissions in SE England have tightly constrained isotopic signatures. The averaged δ13C-CH4 for landfill sites is-58±3‰. The δ13C-CH4 signature for gas leaks is also fairly constant around-36±2‰, a value characteristic of homogenised North Sea supply. In contrast, signatures for coal mines in N. England and Wales fall in a range of-51.2±0.3‰ to-30.9±1.4‰, but can be tightly constrained by region. The study demonstrates that CRDS-based mobile methane measurement coupled with off-line high precision isotopic analysis of plume samples is an efficient way of characterising methane sources. It shows that isotopic measurements allow type identification, and possible location of previously unknown methane sources. In modelling studies this measurement provides an independent constraint to determine the contributions of different sources to the regional methane budget and in the verification of inventory source distribution. © 2015 Elsevier Ltd. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/81790
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Royal Holloway, University of London, United Kingdom; University of East Anglia, United Kingdom
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| Recommended Citation: | |
Zazzeri G,, Lowry D,, Fisher R,et al. Plume mapping and isotopic characterisation of anthropogenic methane sources[J]. Atmospheric Environment,2015-01-01,110
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