DOI: 10.1007/s10533-017-0301-5
Scopus记录号: 2-s2.0-85011826557
论文题名: Mining the isotopic complexity of nitrous oxide: a review of challenges and opportunities
作者: Ostrom N.E. ; Ostrom P.H.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 132, 期: 3 起始页码: 359
结束页码: 372
语种: 英语
英文关键词: Calibration
; Clumped isotopes
; Isotopomer
; Nitrous oxide
; Site preference
Scopus关键词: carbon isotope
; complexity
; greenhouse gas
; international agreement
; isotopic analysis
; isotopic composition
; literature review
; mass spectrometry
; mining
; mitigation
; nitrogen cycle
; nitrogen isotope
; nitrous oxide
; source-sink dynamics
; stable isotope
英文摘要: Nitrous oxide (N2O) is an important focus of international greenhouse gas accounting agreements and mitigation of emissions will likely depend on understanding the mechanisms of its formation and reduction. Consequently, applications of stable isotope techniques to understand N2O cycling are proliferating and recent advances in technology are enabling (1) increases in the frequency of isotope analyses and (2) analyses not previously possible. The two isotopes of N and 3 isotopes of O combine to form a total of 12 possible isotopic molecules of N2O. Consequently, this remarkably simple molecule contains a wealth of isotopic information in the form of bulk (δ15N, δ18O), position dependent (site preference), mass independent (Δ17O) and multiply-substituted or clumped isotope compositions. With recent developments in high-mass resolution double sector instruments all 12 isotopic molecules will likely be resolved in the near future. Advances in spectroscopic instruments hold the promise of substantial increases in sample throughput; however, spectroscopic analyses require corrections due to interferences from other gases and frequent and accurate calibration. Mass spectrometric approaches require mass overlap corrections that are not uniform between research groups and interlaboratory comparisons remain imprecise. The continued lack of attention to calibration by both funding agencies and investigators can only perpetuate disagreement between laboratories in reported isotope values for N2O that, in turn, will compromise global assessments of N2O sources and sinks based on isotope ratios. This review discusses the challenges and opportunities offered by the isotopic complexity of N2O. © 2017, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83304
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Department of Integrative Biology, Ecology and Evolutionary Biology and Behavior Program, and DOE Great Lakes Bioenergy Research Center, Michigan State University, 288 Farm Lane, East Lansing, MI, United States
Recommended Citation:
Ostrom N.E.,Ostrom P.H.. Mining the isotopic complexity of nitrous oxide: a review of challenges and opportunities[J]. Biogeochemistry,2017-01-01,132(3)