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@ARTICLE{Komenda:29245,
      author       = {Komenda, M. and Schaub, A. and Koppmann, R.},
      title        = {{D}escription and characterization of an on-line system for
                      long-term measurements of isoprene, methyl vinyl ketone, and
                      methacrolein in ambient air},
      journal      = {Journal of chromatography / A},
      volume       = {995},
      issn         = {0021-9673},
      address      = {New York, NY [u.a.]},
      publisher    = {Science Direct},
      reportid     = {PreJuSER-29245},
      pages        = {185 - 201},
      year         = {2003},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {In this work we present a detailed technical description of
                      the system that was set up for long-term on-line
                      measurements of isoprene and two of its major degradation
                      products, methyl vinyl ketone and methacrolein in order to
                      provide a better understanding of the role of forest stands
                      as a complex source of reactive trace gases into the
                      troposphere and to elucidate the role of forests as chemical
                      reactors. Volatile organic compounds (VOCs) are
                      preconcentrated on cartridges containing a package of two
                      solid adsorbents (Tenax TA and Carbopack X). Ozone removal
                      is performed prior to sampling by titration with nitrogen
                      monoxide. For the calibration and characterization of the
                      system, a diffusion source was built to produce standard gas
                      mixtures of up to 16 different compounds with mixing ratios
                      at tens ppt (parts per trillion) level mixing ratios and
                      high accuracy. The developed system allows a reliable
                      quantification of these VOCs (detection limit similar to10
                      ppt, reproducibility similar $to5\%)$ with a high temporal
                      resolution (similar to30 min) and has proven to be stable
                      and run automatically without major maintainence. (C) 2003
                      Elsevier Science B.V. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {ICG-II},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB48},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Biochemical Research Methods / Chemistry, Analytical},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000183025800019},
      doi          = {10.1016/S0021-9673(03)00518-1},
      url          = {https://juser.fz-juelich.de/record/29245},
}