% 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{vonCzapiewski:34302,
      author       = {von Czapiewski, K. and Czuba, E. and Huang, L. and Ernst,
                      M. H. and Norman, A. L. and Koppmann, R. and Rudolph, J.},
      title        = {{I}sotopic composition of non-methane hydrocarbons in
                      emissions from biomass burning},
      journal      = {Journal of atmospheric chemistry},
      volume       = {43},
      issn         = {0167-7764},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {PreJuSER-34302},
      pages        = {45 - 60},
      year         = {2002},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The stable carbon isotope ratios of nonmethane hydrocarbons
                      (NMHC) and methyl chloride emitted from biomass burning were
                      determined by analyzing seven whole air samples collected
                      during different phases of the burning process as part of a
                      laboratory study of wood burning. The average of the stable
                      carbon isotope ratios of emitted alkanes, alkenes and
                      aromatic compounds is identical to that of the burnt fuel;
                      more than $50\%$ of the values are within a range of
                      +/-1.5parts per thousand of the composition of the burnt
                      fuel wood. Thus for the majority of NMHC emitted from
                      biomass burning stable carbon isotope ratio of the burnt
                      fuel a good first order approximation for the isotopic
                      composition of the emissions.Of the more than twenty
                      compounds we studied, only methyl chloride and ethyne
                      differed in stable carbon isotope ratios by more than a few
                      per mil from the composition of the fuel. Ethyne is enriched
                      in C-13 by approximately 20-30parts per thousand, and most
                      of the variability can be explained by a dependence on flame
                      temperature. The delta(13)C values decrease by 0.019parts
                      per thousand/K (+/- 0 0053parts per thousand/K) with
                      increasing temperature.Methyl chloride is highly depleted in
                      C-13, on average by 25parts per thousand. However the
                      results cover a wide range of nearly 30parts per thousand.
                      Specifically, in two measurements with wood from Eucalyptus
                      (Eucalyptus delegatensis) as fuel we observed the emission
                      of extremely light methyl chloride (-68.5parts per thousand
                      and -65.5parts per thousand). This coincides with higher
                      than average emission ratios for methyl chloride (15.5 x
                      10(-5) and 18 x 10(-5) mol CH3Cl/ mol CO2). These high
                      emission ratios are consistent with the high chlorine
                      content of the burnt fuel, although, due to the limited
                      number of measurements, it would be premature to generalize
                      these findings. The limited number of observations also
                      prevents any conclusion on a systematic dependence between
                      chlorine content of the fuel, emission ratios and stable
                      carbon isotope ratio of methyl chloride emissions. However,
                      our results show that a detailed understanding of the
                      emissions of methyl chloride from chloride rich fuels is
                      important for understanding its global budget. It is also
                      evident that the usefulness of stable carbon isotope ratios
                      to constrain the global budget of methyl chloride will be
                      complicated by the very large variability of the stable
                      carbon isotope ratio of biomass burning emissions.
                      Nevertheless, ultimately the large fractionation may provide
                      additional constraints for the contribution of biomass
                      burning emissions to the atmospheric budget of methyl
                      chloride.},
      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    = {Environmental Sciences / Meteorology $\&$ Atmospheric
                      Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000176760900003},
      doi          = {10.1023/A:1016105030624},
      url          = {https://juser.fz-juelich.de/record/34302},
}