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@ARTICLE{Shah:889781,
      author       = {Shah, Rishabh U. and Coggon, Matthew M. and Gkatzelis,
                      Georgios and McDonald, Brian C. and Tasoglou, Antonios and
                      Huber, Heinz and Gilman, Jessica and Warneke, Carsten and
                      Robinson, Allen L. and Presto, Albert A.},
      title        = {{U}rban {O}xidation {F}low {R}eactor {M}easurements
                      {R}eveal {S}ignificant {S}econdary {O}rganic {A}erosol
                      {C}ontributions from {V}olatile {E}missions of {E}merging
                      {I}mportance},
      journal      = {Environmental science $\&$ technology},
      volume       = {54},
      number       = {2},
      issn         = {1520-5851},
      address      = {Columbus, Ohio},
      publisher    = {American Chemical Society},
      reportid     = {FZJ-2021-00394},
      pages        = {714 - 725},
      year         = {2020},
      note         = {Kein Post-Print vorhanden},
      abstract     = {Mobile sampling studies have revealed enhanced levels of
                      secondary organic aerosol (SOA) in source-rich urban
                      environments. While these enhancements can be from rapidly
                      reacting vehicular emissions, it was recently hypothesized
                      that nontraditional emissions (volatile chemical products
                      and upstream emissions) are emerging as important sources of
                      urban SOA. We tested this hypothesis by using gas and
                      aerosol mass spectrometry coupled with an oxidation flow
                      reactor (OFR) to characterize pollution levels and SOA
                      potentials in environments influenced by traditional
                      emissions (vehicular, biogenic), and nontraditional
                      emissions (e.g., paint fumes). We used two SOA models to
                      assess contributions of vehicular and biogenic emissions to
                      our observed SOA. The largest gap between observed and
                      modeled SOA potential occurs in the morning-time urban
                      street canyon environment, for which our model can only
                      explain half of our observation. Contributions from VCP
                      emissions (e.g., personal care products) are highest in this
                      environment, suggesting that VCPs are an important missing
                      source of precursors that would close the gap between
                      modeled and observed SOA potential. Targeted OFR oxidation
                      of nontraditional emissions shows that these emissions have
                      SOA potentials that are similar, if not larger, compared to
                      vehicular emissions. Laboratory experiments reveal large
                      differences in SOA potentials of VCPs, implying the need for
                      further characterization of these nontraditional emissions.},
      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       = {31851821},
      UT           = {WOS:000509419700008},
      doi          = {10.1021/acs.est.9b06531},
      url          = {https://juser.fz-juelich.de/record/889781},
}