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@ARTICLE{Rollins:5758,
      author       = {Rollins, A. W. and Kiendler-Scharr, A. and Fry, J. L. and
                      Brauers, T. and Brown, S. S. and Dorn, H.-P. and Dubé, W.
                      P. and Fuchs, H. and Mensah, A. and Mentel, T. F. and
                      Rohrer, F. and Tillmann, R. and Wegener, R. and Wooldridge,
                      P. J. and Cohen, R.C.},
      title        = {{I}soprene oxidation by nitrate radical: alkyl nitrate and
                      secondary organic aerosol yields},
      journal      = {Atmospheric chemistry and physics},
      volume       = {9},
      issn         = {1680-7316},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {PreJuSER-5758},
      pages        = {6685 - 6703},
      year         = {2009},
      note         = {The Berkeley authors were supported by NSF ATM-0639847 and
                      NSF ATM-0511829. The authors would like to thank the SAPHIR
                      NO<INF>3</INF> intercomparison campaign team for organizing
                      and administering the experiments in June 2007 at
                      Forschungszentrum Julich. This work was a joint activity of
                      the European Community Network of Excellence ACCENT, grant
                      no. GOCE CT-2004-505337 and the EUROCHAMP project.},
      abstract     = {Alkyl nitrates and secondary organic aerosol (SOA) produced
                      during the oxidation of isoprene by nitrate radicals has
                      been observed in the SAPHIR ( Simulation of Atmospheric
                      PHotochemistry In a large Reaction Chamber) chamber. A 16 h
                      dark experiment was conducted with temperatures at 289-301
                      K, and maximum concentrations of 11 ppb isoprene, 62.4 ppb
                      O-3 and 31.1 ppb NOX. We find the yield of nitrates is 70
                      +/- $8\%$ from the isoprene + NO3 reaction, and the yield
                      for secondary dinitrates produced in the reaction of primary
                      isoprene nitrates with NO3 is 40 +/- $20\%.$ We find an
                      effective rate constant for reaction of NO3 with the group
                      of first generation oxidation products to be 7 x 10(-14)
                      molecule(-1) cm(3) s(-1). At the low total organic aerosol
                      concentration in the chamber (max=0.52 mu g m(-3)) we
                      observed a mass yield (Delta SOA mass/Delta isoprene mass)
                      of $2\%$ for the entire 16 h experiment. However a
                      comparison of the timing of the observed SOA production to a
                      box model simulation of first and second generation
                      oxidation products shows that the yield from the first
                      generation products was $<0.7\%$ while the further oxidation
                      of the initial products leads to a yield of $14\%$ ( defined
                      as Delta SOA/Delta isoprene(2X) where Delta isoprene(2X) is
                      the mass of isoprene which reacted twice with NO3). The SOA
                      yield of $14\%$ is consistent with equilibrium partitioning
                      of highly functionalized C-5 products of isoprene
                      oxidation.},
      keywords     = {J (WoSType)},
      cin          = {ICG-2},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB791},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK406},
      shelfmark    = {Meteorology $\&$ Atmospheric Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000270131400003},
      url          = {https://juser.fz-juelich.de/record/5758},
}