DOI: 10.1016/j.atmosenv.2017.05.010
Scopus记录号: 2-s2.0-85019240757
论文题名: Δ15N values of atmospheric N species simultaneously collected using sector-based samplers distant from sources – Isotopic inheritance and fractionation
作者: Savard M ; M ; , Cole A ; , Smirnoff A ; , Vet R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 162 起始页码: 11
结束页码: 22
语种: 英语
英文关键词: Ammonia
; Ammonium
; Atmospheric emissions
; Isotopes
; Nitrate
; Nitric acid
; Nitrogen
; Oxidized
; Particulate matter
; Precipitation
; Reduced
Scopus关键词: Ammonia
; Isotopes
; Nitrates
; Nitric acid
; Nitrogen
; Oxidation
; Precipitation (chemical)
; Secondary emission
; Temperature
; Temperature distribution
; Ammonium
; Atmospheric emission
; Oxidized
; Particulate Matter
; Reduced
; Atmospheric temperature
; ammonia
; nitrate
; nitric acid
; nitrogen
; nitrogen 15
; ammonia
; ammonium compound
; atmospheric chemistry
; emission
; isotopic analysis
; isotopic fractionation
; nitrate
; nitric acid
; nitrogen
; nitrogen isotope
; oxidation
; particulate matter
; precipitation (chemistry)
; reduction
; sampler
; theoretical study
; air pollution
; air sampler
; air sampling
; Article
; Canada
; equilibrium constant
; fractionation
; inheritance
; isotope ratio mass spectrometry
; mass spectrometry
; measurement precision
; metal industry
; oxidation
; particulate matter
; precipitation
; priority journal
; reproducibility
; temperature dependence
; temperature sensitivity
; Alberta
; Canada
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: The nitrogen isotope ratios (δ15N) of atmospheric N species are commonly suggested as indicators of N emission sources. Therefore, numerous research studies have developed analytical methodologies and characterized primary (gases) and secondary emission products (mostly precipitation and aerosols) from various emitters. These previous studies have generally collected either reduced or oxidized N forms, and sampled them separately prior to determining their δ15N values. Distinctive isotopic signals have been reported for emissions from various sources, and seasonality of the δ15N values has been frequently attributed to shifts in relative contributions from sources with different isotopic signals. However, theoretical concepts suggest that temperature effects on isotopic fractionation may also affect the δ15N values of atmospheric reaction products. Here we use a sector-based multi-stage filter system to simultaneously collect seven reduced and oxidized N species downwind from five different source types in Alberta, Canada. We report δ15N values obtained with a state-of-the-art gold-furnace pre-concentrator online with an isotope ratio mass spectrometer (IRMS) to provide representative results even for oxidized-N forms. We find that equilibrium isotope effects and their temperature dependence play significant roles in determining the δ15N values of the secondary emission products. In the end, seasonal δ15N changes here are mainly caused by temperature effects on fractionation, and the δ15N values of only two N species from one source type can be retained as potential fingerprints of emissions. © 2017 Natural Resources of Canada (Government of Canada) Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82487
Appears in Collections: 气候变化事实与影响
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作者单位: Geological Survey of Canada (Natural Resources Canada), 490 de la Couronne, Québec, QC, Canada; Environment and Climate Change Canada, Air Quality Research Division, 4905 Dufferin Street, Toronto, ON, Canada
Recommended Citation:
Savard M,M,, Cole A,et al. Δ15N values of atmospheric N species simultaneously collected using sector-based samplers distant from sources – Isotopic inheritance and fractionation[J]. Atmospheric Environment,2017-01-01,162