Intercomparison of ammonia measurement techniques at an intensively managed grassland site ( Oensingen , Switzerland )

  title={Intercomparison of ammonia measurement techniques at an intensively managed grassland site ( Oensingen , Switzerland )},
  author={Marc Norman and Christoph Spirig and Val{\'e}ry Wolff and Ivonne Trebs and Christophe Fl{\'e}chard and Armin Wisthaler and Ralf Schnitzhofer and Armin Hansel and Albrecht Neftel},
As part of a field campaign in the framework of the NitroEurope project, three different instruments for atmospheric ammonia (NH 3) measurements were operated sideby-side on a managed grassland site in Switzerland: a modified Proton Transfer Reaction Mass Spectrometer (PTRMS), a GRadient of AErosol and Gases Online Registrator (GRAEGOR), and an Automated Ammonia Analyzer (AiRRmonia). The modified PTR-MS approach is based on chemical ionization of NH3 using O + 2 instead of H3O + as ionizing… CONTINUE READING
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