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@ARTICLE{Pang:1016824,
      author       = {Pang, Jacky Y. S. and Berg, Florian and Novelli, Anna and
                      Bohn, Birger and Färber, Michelle and Carlsson, Philip T.
                      M. and Dubus, René and Gkatzelis, Georgios and Rohrer,
                      Franz and Wedel, Sergej and Wahner, Andreas and Fuchs,
                      Hendrik},
      title        = {{A}tmospheric photooxidation and ozonolysis of sabinene:
                      reaction rate coefficients, product yields, and chemical
                      budget of radicals},
      journal      = {Atmospheric chemistry and physics},
      volume       = {23},
      number       = {19},
      issn         = {1680-7316},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2023-03808},
      pages        = {12631 - 12649},
      year         = {2023},
      abstract     = {The oxidation of sabinene by the hydroxyl radical (OH) and
                      ozone (O3) was investigated under atmospherically relevant
                      conditions in the atmospheric simulation chamber SAPHIR
                      (Simulation of Atmospheric Photochemistry In a Large
                      Reaction Chamber) at Forschungszentrum Jülich, Germany. The
                      rate coefficients of the reactions of sabinene with OH and
                      with O3 were determined. The temperature dependence between
                      284 to 340 K of the rate coefficient of the reaction of
                      sabinene with OH, kSAB+OH, was measured for the first time
                      using an OH reactivity instrument, resulting in an Arrhenius
                      expression of
                      (1.67 ± 0.16) × 10−11 × exp((575 ± 30)/T) cm3 s−1.
                      The values agree with those determined in chamber
                      experiments in this work and reported in the literature for
                      ∼ 298 K within the uncertainties of measurements. The
                      ozonolysis reaction rate coefficient of sabinene (kSAB+O3)
                      determined in chamber experiments at a temperature of
                      (278 ± 2) K is
                      (3.4 ± 0.8) × 10−17 cm3 s−1, which is
                      $58 \%$ lower than the value reported in the literature
                      for room temperature. The measurement of products from the
                      oxidation of sabinene by OH resulted in an acetone yield of
                      $(21 ± 15) \%,$ a formaldehyde yield of
                      $(46 ± 25) \%,$ and a sabinaketone yield of
                      $(18 ± 16) \%.$ All yields determined in the chamber
                      experiments agree well with values from previous laboratory
                      studies within their uncertainties. In addition, the
                      formaldehyde yield determined in this study is consistent
                      with that predicted by the sabinene OH-oxidation mechanism
                      which was devised from quantum chemical calculations by Wang
                      and Wang (2018), whereas the acetone yield is about
                      $15 \%$ higher than that predicted by the mechanism. In
                      the ozonolysis experiments, the analysis of product
                      measurements results in an acetone yield of
                      $(5 ± 2) \%,$ a formaldehyde yield of
                      $(48 ± 15) \%,$ a sabinaketone yield of
                      $(31 ± 15) \%,$ and an OH radical yield of
                      $(26 ± 29) \%.$ The OH radical yield is lower than
                      expected from the theoretical mechanism in Wang and Wang
                      (2017), but the value still agrees within the uncertainty.
                      An analysis of the chemical budget of OH radicals was
                      performed for the chamber experiments. The analysis reveals
                      that the destruction rate of the OH radical matches the
                      production rate of OH, suggesting that there is no
                      significant missing OH source for example from isomerization
                      reactions of peroxy radicals for the experimental conditions
                      in this work.},
      cin          = {IEK-8},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013},
      pnm          = {2111 - Air Quality (POF4-211)},
      pid          = {G:(DE-HGF)POF4-2111},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001161793600001},
      doi          = {10.5194/acp-23-12631-2023},
      url          = {https://juser.fz-juelich.de/record/1016824},
}