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@ARTICLE{Schramm:857256,
      author       = {Schramm, Sébastien and Zannoni, Nora and Gros, Valérie
                      and Tillmann, Ralf and Kiendler-Scharr, Astrid and
                      Sarda-Estève, Roland and Bridoux, Maxime},
      title        = {{N}ew application of direct analysis in real time
                      high-resolution mass spectrometry for the untargeted
                      analysis of fresh and aged secondary organic aerosols
                      generated from monoterpenes},
      journal      = {Rapid communications in mass spectrometry},
      volume       = {33},
      number       = {S1},
      issn         = {0951-4198},
      address      = {New York, NY},
      publisher    = {Wiley Interscience},
      reportid     = {FZJ-2018-06485},
      pages        = {50-59},
      year         = {2019},
      abstract     = {RationaleSecondary organic aerosols (SOAs) represent a
                      significant portion of total atmospheric aerosols. They are
                      generated by the oxidation of volatile organic compounds
                      (VOCs), and particularly biogenic VOCs (BVOCs). The analysis
                      of such samples is usually performed by targeted methods
                      that often require time‐consuming preparation steps that
                      can induce loss of compounds and/or sample
                      contaminations.MethodsRecently, untargeted methods using
                      high‐resolution mass spectrometry (HRMS) have been
                      successfully employed for a broad characterization of
                      chemicals in SOAs. Herein we propose a new application of
                      the direct analysis in real time (DART) ionization method
                      combined with HRMS to quickly detect several hundred
                      chemicals in SOAs collected on a quartz filter without
                      sample preparation or separation techniques.ResultsThe
                      reproducibility of measurements was good, with several
                      hundred elemental compositions common to three different
                      replicates. The relative standard deviations of the
                      intensities of the chemical families ranged from $6\%$ to
                      $35\%,$ with sufficient sensitivity to allow the unambiguous
                      detection of 4 ng/mm2 of pinic acid. The presence of
                      oligomers and specific tracers was highlighted by MSn
                      (n ≤ 4) experiments, an achievement that is difficult
                      to attain with other ultrahigh‐resolution mass
                      spectrometers. Contributions of this untargeted DART‐HRMS
                      method were illustrated by the analysis of fresh and aged
                      SOAs from different gaseous precursors such as limonene, a
                      β‐pinene/limonene mixture or scots pines
                      emissions.ConclusionsThe results show that it is possible to
                      use DART‐HRMS for the identification of tracers of
                      specific aging reactions, or for the identification of
                      aerosols from specific biogenic precursors.},
      cin          = {IEK-8},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-8-20101013},
      pnm          = {243 - Tropospheric trace substances and their
                      transformation processes (POF3-243)},
      pid          = {G:(DE-HGF)POF3-243},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29971833},
      UT           = {WOS:000478091100008},
      doi          = {10.1002/rcm.8228},
      url          = {https://juser.fz-juelich.de/record/857256},
}