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@ARTICLE{Tan:875172,
      author       = {Tan, Zhaofeng and Hofzumahaus, Andreas and Lu, Keding and
                      Brown, Steven S. and Holland, Frank and Huey, Lewis Gregory
                      and Kiendler-Scharr, Astrid and Li, Xin and Liu, Xiaoxi and
                      Ma, Nan and Min, Kyung-Eun and Rohrer, Franz and Shao, Min
                      and Wahner, Andreas and Wang, Yuhang and Wiedensohler,
                      Alfred and Wu, Yusheng and Wu, Zhijun and Zeng, Limin and
                      Zhang, Yuanhang and Fuchs, Hendrik},
      title        = {{N}o {E}vidence for a {S}ignificant {I}mpact of
                      {H}eterogeneous {C}hemistry on {R}adical {C}oncentrations in
                      the {N}orth {C}hina {P}lain in {S}ummer 2014},
      journal      = {Environmental science $\&$ technology},
      volume       = {54},
      number       = {10},
      issn         = {1520-5851},
      address      = {Columbus, Ohio},
      publisher    = {American Chemical Society},
      reportid     = {FZJ-2020-01854},
      pages        = {5973–5979},
      year         = {2020},
      abstract     = {The oxidation of nitric oxide to nitrogen dioxide by
                      hydroperoxy (HO2) and organic peroxy radicals (RO2) is
                      responsible for the chemical net ozone production in the
                      troposphere and for the regeneration of hydroxyl radicals,
                      the most important oxidant in the atmosphere. In Summer
                      2014, a field campaign was conducted in the North China
                      Plain, where increasingly severe ozone pollution has been
                      experienced in the last years. Chemical conditions in the
                      campaign were representative for this area. Radical and
                      trace gas concentrations were measured, allowing for
                      calculating the turnover rates of gas-phase radical
                      reactions. Therefore, the importance of heterogeneous HO2
                      uptake on aerosol could be experimentally determined. HO2
                      uptake could have suppressed ozone formation at that time
                      because of the competition with gas-phase reactions that
                      produce ozone. The successful reduction of the aerosol load
                      in the North China Plain in the last years could have led to
                      a significant decrease of HO2 loss on particles, so that
                      ozone-forming reactions could have gained importance in the
                      last years. However, the analysis of the measured radical
                      budget in this campaign shows that HO2 aerosol uptake did
                      not impact radical chemistry for chemical conditions in
                      2014. Therefore, reduced HO2 uptake on aerosol since then is
                      likely not the reason for the increasing number of ozone
                      pollution events in the North China Plain, contradicting
                      conclusions made from model calculations reported in the
                      literature.},
      cin          = {IEK-8},
      ddc          = {333.7},
      cid          = {I:(DE-Juel1)IEK-8-20101013},
      pnm          = {243 - Tropospheric trace substances and their
                      transformation processes (POF3-243)},
      pid          = {G:(DE-HGF)POF3-243},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {32343120},
      UT           = {WOS:000537151000008},
      doi          = {10.1021/acs.est.0c00525},
      url          = {https://juser.fz-juelich.de/record/875172},
}