title: Isotopocule analysis of biologically produced nitrous oxide in various environments.
abstract: Natural abundance ratios of isotopocules, molecules that have the same chemical constitution and configuration, but that only differ in isotope substitution, retain a record of a compound's origin and reactions. A method to measure isotopocule ratios of nitrous oxide (N2O) has been established by using mass analysis of molecular ions and fragment ions. The method has been applied widely to environmental samples from the atmosphere, ocean, fresh water, soils, and laboratory-simulation experiments. Results show that isotopocule ratios, particularly the15N-site preference (difference between isotopocule ratios14N15N16O/14N14N16O and15N14N16O/14N14N16O), have a wide range that depends on their production and consumption processes. Observational and laboratory studies of N2O related to biological processes are reviewed and discussed to elucidate complex material cycles of this trace gas, which causes global warming and stratospheric ozone depletion. © 2015 Wiley Periodicals, Inc. Mass Spec Rev 36:135-160, 2017.
authors: Department of Environmental Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan.
authors: Sakae
authors: S
authors: Toyoda
authors: Department of Environmental Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan.|Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan.|Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
authors: Naohiro
authors: N
authors: Yoshida
authors: Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-City, Tokyo 183-8509, Japan.
authors: Keisuke
authors: K
authors: Koba
mesh_terms: D000818:Animals; D001105:Archaea / Q000737:chemistry; D001419:Bacteria / Q000737:chemistry; D004784:Environmental Monitoring / Q000379:methods*; D005658:Fungi / Q000737:chemistry; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods*; D058465:Nitrification; D009587:Nitrogen Isotopes / Q000032:analysis; D009609:Nitrous Oxide / Q000032:analysis*; D012722:Sewage / Q000032:analysis; D012987:Soil / Q000737:chemistry; D014867:Water / Q000032:analysis
chemical_list: D009587:Nitrogen Isotopes; D012722:Sewage; D012987:Soil; D014867:Water; D009609:Nitrous Oxide
keywords: nitrogen cycle; stable isotopes; trace gas