Changes in aerosol/gas-phase distribution ratio of semi-volatile products

Α-pinene is an important precursor of secondary organic aerosol (SOA) in the atmosphere. However, the effects of NOx on the SOA derived from α-pinene photooxidation are still not fully understood. the temporal evolution of SOA formation from α-pinene photooxidation with different initial NOx concentrations was investigated in a photooxidation chamber.