% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Komenda:13462,
      author       = {Komenda, M. and Parusel, E. and Wedel, A. and Koppmann, R.},
      title        = {{M}easurements of biogenic {VOC} emissions : sampling,
                      analysis and calibration},
      journal      = {Atmospheric environment},
      volume       = {35},
      issn         = {1352-2310},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-13462},
      pages        = {2069 - 2080},
      year         = {2001},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We describe an experimental sq stem and techniques for
                      sampling and analyzing biogenic emissions of volatile
                      organic compounds (VOC). The system uses a Teflon chamber to
                      enclose a single branch of a tree. Temperature,
                      photosynthetic active radiation (PAR), relative humidity and
                      carbon dioxide concentration are continuously monitored with
                      a time resolution of five minutes. VOCs are sampled on tubes
                      containing solid adsorbents (Tenax TA and Carbotrap) with a
                      time resolution of 1 h. Composition and concentration of VOC
                      emissions are measured with a gas chromatographic system
                      equipped with a flame ionization detector (FID) for
                      quantitative and a mass spectrometer (MS) for qualitative
                      analysis. To calibrate the system, a diffusion source was
                      built to produce standard mixtures of up to 36 different
                      compounds with mixing ratios at low concentrations and high
                      accuracy. The diffusion rates were monitored over 17 months
                      and shelved variations between 0.2 and $7.6\%$ for
                      monoterpenes (expect for alpha -phellandrene, alpha
                      -terpinene and gamma -terpinene) and between 10.6 and
                      $22.6\%$ for sesquiterpenes. FID response factors calculated
                      from calibration measurements were corrected using
                      correction factors based on the effective carbon number
                      concept. The individual response factors of 23 compounds
                      were combined to a mean response factor (RFm) with a value
                      of 23,100 muV s ng(-1) and a standard deviation of $9\%.$
                      The system described here was used to measure VOC emission
                      rates of Scots pine (Pinus sylvestris) in 1998 and 1999. (C)
                      2001 Elsevier Science Ltd. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {ICG-II},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB48},
      pnm          = {Troposphärische Chemie},
      pid          = {G:(DE-Juel1)FUEK74},
      shelfmark    = {Environmental Sciences / Meteorology $\&$ Atmospheric
                      Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000168287300003},
      doi          = {10.1016/S1352-2310(00)00502-1},
      url          = {https://juser.fz-juelich.de/record/13462},
}