Effects of building recirculation rates on secondary organic aerosols generated by indoor chemistry

This study examines the effect of building recirculation rates on the concentrations of secondary organic aerosol (SOA) resulting from reactions between indoor limonene and ozone. The experiments were conducted in a large environmental chamber As the recirculation rates increased, the surface removal rate of both ozone and SOA increased and the size-distribution of the particle number-concentration shifted towards larger particles and a broader spread in the distribution .The results have health implications in so far as particle size determines to some extent where a particle deposits in the respiratory tract.