Depression of Ammonia Uptake to Sulfuric Acid Aerosols by

ARTICLE pubs.acs.org/est

Depression of Ammonia Uptake to Sulfuric Acid Aerosols by Competing Uptake of Ambient Organic Gases John Liggio,* Shao-Meng Li, Alexander Vlasenko, Craig Stroud, and Paul Makar Atmospheric Science and Technology Directorate, Science and Technology Branch, Environment Canada, 4905 Dufferin Street, Toronto, Ontario M3H 5T4, Canada

bS Supporting Information ABSTRACT: The neutralization of acidic aerosols by ammonia has been studied through experiments which combine ambient air with laboratory generated sulfuric acid aerosol. Results indicated that acidic aerosol mixed with organic free air and ammonia was neutralized on a time scale