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@ARTICLE{Mohn:155223,
      author       = {Mohn, Joachim and Wolf, Benjamin and Toyoda, Sakae and Lin,
                      Cheng-Ting and Liang, Mao-Chang and Brüggemann, Nicolas and
                      Wissel, Holger and Steiker, Amy E. and Dyckmans, Jens and
                      Szwec, Lars and Ostrom, Nathaniel E. and Casciotti, Karen L.
                      and Forbes, Matthew and Giesemann, Anette and Well, Reinhard
                      and Doucett, Richard R. and Yarnes, Chris T. and Ridley,
                      Anna R. and Kaiser, Jan and Yoshida, Naohiro},
      title        = {{I}nterlaboratory assessment of nitrous oxide isotopomer
                      analysis by isotope ratio mass spectrometry and laser
                      spectroscopy: current status and perspectives},
      journal      = {Rapid communications in mass spectrometry},
      volume       = {28},
      number       = {18},
      issn         = {0951-4198},
      address      = {New York, NY},
      publisher    = {Wiley Interscience},
      reportid     = {FZJ-2014-04397},
      pages        = {1995 - 2007},
      year         = {2014},
      abstract     = {RATIONALEIn recent years, research and applications of the
                      N2O site-specific nitrogen isotope composition have
                      advanced, reflecting awareness of the contribution of N2O to
                      the anthropogenic greenhouse effect, and leading to
                      significant progress in instrument development. Further
                      dissemination of N2O isotopomer analysis, however, is
                      hampered by a lack of internationally agreed gaseous N2O
                      reference materials and an uncertain compatibility of
                      different laboratories and analytical techniques.METHODSIn a
                      first comparison approach, eleven laboratories were each
                      provided with N2O at tropospheric mole fractions (target gas
                      T) and two reference gases (REF1 and REF2). The laboratories
                      analysed all gases, applying their specific analytical
                      routines. Compatibility of laboratories was assessed based
                      on N2O isotopocule data for T, REF1 and REF2. Results for T
                      were then standardised using REF1 and REF2 to evaluate the
                      potential of N2O reference materials for improving
                      compatibility between laboratories.RESULTSCompatibility
                      between laboratories depended on the analytical technique:
                      isotope ratio mass spectrometry (IRMS) results showed better
                      compatibility for δ15N values, while the performance of
                      laser spectroscopy was superior with respect to N2O site
                      preference. This comparison, however, is restricted by the
                      small number of participating laboratories applying laser
                      spectroscopy. Offset and two-point calibration correction of
                      the N2O isotopomer data significantly improved the
                      consistency of position-dependent nitrogen isotope data
                      while the effect on δ15N values was only
                      minor.CONCLUSIONSThe study reveals that for future research
                      on N2O isotopocules, standardisation against N2O reference
                      material is essential to improve interlaboratory
                      compatibility. For atmospheric monitoring activities, we
                      suggest N2O in whole air as a unifying scale anchor.
                      Copyright © 2014 John Wiley $\&$ Sons, Ltd.},
      cin          = {IBG-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {246 - Modelling and Monitoring Terrestrial Systems: Methods
                      and Technologies (POF2-246) / 255 - Terrestrial Systems:
                      From Observation to Prediction (POF3-255)},
      pid          = {G:(DE-HGF)POF2-246 / G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000340452600006},
      doi          = {10.1002/rcm.6982},
      url          = {https://juser.fz-juelich.de/record/155223},
}