Effect of Acidity on Secondary Organic Aerosol Formation from Isoprene
Citations Over TimeTop 1% of 2007 papers
Abstract
The effect of particle-phase acidity on secondary organic aerosol (SOA) formation from isoprene is investigated in a laboratory chamber study, in which the acidity of the inorganic seed aerosol was controlled systematically. The observed enhancement in SOA mass concentration is closely correlated to increasing aerosol acidity (R2 = 0.979). Direct chemical evidence for acid-catalyzed particle-phase reactions was obtained from the SOA chemical analyses. Aerosol mass concentrations for the 2-methyltetrols, as well as the newly identified sulfate esters, both of which serve as tracers for isoprene SOA in ambient aerosols, increased significantly with enhanced aerosol acidity. Aerosol acidities, as measured in nmol of H+ m(-3), employed in the present study are in the same range as those observed in tropospheric aerosol collected from the eastern U.S.
Related Papers
- → Global modeling of aerosol dynamics: Model description, evaluation, and interactions between sulfate and nonsulfate aerosols(2005)268 cited
- → A study on the relationship between mass concentrations, chemistry and number size distribution of urban fine aerosols in Milan, Barcelona and London(2007)164 cited
- → A study on the relationship between mass concentrations, chemistry and number size distribution of urban fine aerosols in Milan, Barcelona and London(2007)10 cited
- → OCCUPATIONAL EXPOSURE to 4,4′ -BIPYRIDYL VAPOR and AEROSOL DURING PARAQUAT MANUFACTURING(1993)3 cited
- Influence of A Sand-dust Weather Process on Aerosol Mass Concentration and Number Concentration in Tianjin,China(2013)