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@ARTICLE{Wildt:151893,
      author       = {Wildt, J. and Mentel, T. F. and Kiendler-Scharr, A. and
                      Hoffmann, T. and Andres, S. and Ehn, M. and Kleist, E. and
                      Müsgen, Peter and Rohrer, F. and Rudich, Y. and Springer,
                      M. and Tillmann, R. and Wahner, A.},
      title        = {{S}uppression of new particle formation from monoterpene
                      oxidation by ${NO}\<sub\>x\</sub\>$},
      journal      = {Atmospheric chemistry and physics},
      volume       = {14},
      number       = {6},
      issn         = {1680-7324},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2014-01743},
      pages        = {2789 - 2804},
      year         = {2014},
      abstract     = {The impact of nitrogen oxides (NOx = NO + NO2) on new
                      particle formation (NPF) and on photochemical ozone
                      production from real plant volatile organic compound (BVOC)
                      emissions was studied in a laboratory setup. At high NOx
                      conditions ([BVOC] / [NOx] < 7, [NOx] > 23 ppb) new particle
                      formation was suppressed. Instead, photochemical ozone
                      formation was observed resulting in higher hydroxyl radical
                      (OH) and lower nitrogen monoxide (NO) concentrations. When
                      [NO] was reduced back to levels below 1 ppb by OH reactions,
                      NPF was observed. Adding high amounts of NOx caused NPF to
                      be slowed by orders of magnitude compared to analogous
                      experiments at low NOx conditions ([NOx] ~300 ppt), although
                      OH concentrations were higher. Varying NO2 photolysis
                      enabled showing that NO was responsible for suppression of
                      NPF. This suggests that peroxy radicals are involved in NPF.
                      The rates of NPF and photochemical ozone production were
                      related by power law dependence with an exponent approaching
                      −2. This exponent indicated that the overall peroxy
                      radical concentration must have been similar when NPF
                      occurred. Thus, permutation reactions of first-generation
                      peroxy radicals cannot be the rate limiting step in NPF from
                      monoterpene oxidation. It was concluded that permutation
                      reactions of higher generation peroxy-radical-like
                      intermediates limit the rate of new particle formation.In
                      contrast to the strong effects on the particle numbers, the
                      formation of particle mass was substantially less sensitive
                      to NOx concentrations. If at all, yields were reduced by
                      about an order of magnitude only at very high NOx
                      concentrations.},
      cin          = {IBG-2 / IEK-8},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-2-20101118 / I:(DE-Juel1)IEK-8-20101013},
      pnm          = {89582 - Plant Science (POF2-89582) / 233 - Trace gas and
                      aerosol processes in the troposphere (POF2-233)},
      pid          = {G:(DE-HGF)POF2-89582 / G:(DE-HGF)POF2-233},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000334104700004},
      doi          = {10.5194/acp-14-2789-2014},
      url          = {https://juser.fz-juelich.de/record/151893},
}