Contribution of oxidized organic compounds to nanoparticle growth

Abstract

Nucleation and subsequent growth of particles was studied in the CLOUD7 chamber experiment at Cern. Experiments were performed in varying concentrations of sulphuric acid, ammonia, dimethylamine and α-pinene, and using both ozone and hydroxyl radicals as oxidizers. Particle growth rates were determined at size ranges <1.5 nm, 1.5-3 nm, and >3nm. Comparison of the growth to the amount oxidized organics in the mass range 300-450 amu was made. © 2013 AIP Publishing LLC.