Secondary organic aerosol formation from OH-initiated oxidation of m-xylene: effects of relative humidity on yield and chemical composition
Qun Zhang,Yongfu Xu,and Long Jia
Qun Zhang
State Key Laboratory of Atmospheric Boundary Layer Physics and
Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of
Sciences, Beijing 100029, China
Department of Atmospheric Chemistry and Environmental Sciences,
College of Earth Sciences, University of Chinese Academy of Sciences,
Beijing 100049, China
State Key Laboratory of Atmospheric Boundary Layer Physics and
Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of
Sciences, Beijing 100029, China
Department of Atmospheric Chemistry and Environmental Sciences,
College of Earth Sciences, University of Chinese Academy of Sciences,
Beijing 100049, China
State Key Laboratory of Atmospheric Boundary Layer Physics and
Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of
Sciences, Beijing 100029, China
Department of Atmospheric Chemistry and Environmental Sciences,
College of Earth Sciences, University of Chinese Academy of Sciences,
Beijing 100049, China
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The negative effects of relative humidity (RH) on secondary organic aerosol (SOA) formation from m-xylene under low NOx conditions were observed. The mechanisms of the RH effects of SOA yields have been sufficiently discussed. The decrease of SOA formation at high RH may be mainly attributed to the suppression of oligomers and the further particle-phase reaction of highly oxygenated organic molecules. The faster wall loss of SOA precursors at higher RH may also influence the SOA yield.
The negative effects of relative humidity (RH) on secondary organic aerosol (SOA) formation from...
