抄録
Secondary organic aerosol (SOA) accounts for a major mass fraction of aerosol that influences global climate and air quality. Although considerable progress has been made in the understanding of SOA formation processes, accurate prediction of SOA formation remains a major challenge due to the incompleteness in understanding major precursors of SOA and their reactions in the atmosphere. This review outlines recent studies on missing potential sources of SOA, especially intermediate volatility organic compounds (IVOC). Polycyclic Aromatic Hydrocarbons (PAH) have acquired increasing attention as a potentially important class of IVOC that contributes to SOA formation. Additionally, studies on SOA formation from alkane and phenolic compounds are reviewed as other significant classes of IVOC.
