Seasonal differences in formation processes of oxidized organic aerosol near Houston, TX
Qili Dai,Benjamin C. Schulze,Xiaohui Bi,Alexander A. T. Bui,Fangzhou Guo,Henry W. Wallace,Nancy P. Sanchez,James H. Flynn,Barry L. Lefer,Yinchang Feng,and Robert J. Griffin
State Environmental Protection Key Laboratory of Urban Ambient Air
Particulate Matter Pollution Prevention and Control, College of
Environmental Science and Engineering, Nankai University, Tianjin 300350,
China
Department of Civil and Environmental Engineering, Rice University,
Houston, TX 77005, USA
Benjamin C. Schulze
Department of Civil and Environmental Engineering, Rice University,
Houston, TX 77005, USA
now at: Department of Environmental Science and Engineering,
California Institute of Technology, Pasadena, CA 91125, USA
Xiaohui Bi
State Environmental Protection Key Laboratory of Urban Ambient Air
Particulate Matter Pollution Prevention and Control, College of
Environmental Science and Engineering, Nankai University, Tianjin 300350,
China
Department of Civil and Environmental Engineering, Rice University,
Houston, TX 77005, USA
State Environmental Protection Key Laboratory of Urban Ambient Air
Particulate Matter Pollution Prevention and Control, College of
Environmental Science and Engineering, Nankai University, Tianjin 300350,
China
Robert J. Griffin
Department of Civil and Environmental Engineering, Rice University,
Houston, TX 77005, USA
Department of Chemical and Biomolecular Engineering, Rice
University, Houston, TX 77005, USA
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The formation processes of secondary organic aerosol remain to be fully understood. We reported the measurement data from two field campaigns within Houston, TX, to investigate the effects of aqueous-phase chemistry and photochemistry in processing oxygenated organic aerosol (OOA) in winter and summer. Both photochemistry and aqueous-phase processing appear to facilitate more-oxidized OOA formation. The processing mechanism of less-oxidized OOA apparently depended on relative humidity.
The formation processes of secondary organic aerosol remain to be fully understood. We reported...
