关键词：气溶胶；空气污染控制；大气化学
摘 要：This report explores the volatility of primary organic aerosol (POA) emitted from light duty gasoline-powered vehicles at atmospherically relevant concentrations using state of the science instrumentation. Existing POA partitioning models were tested through analysis of emissions changes that result from perturbations to the dilution air used during vehicle sampling. Measurements were re-interpreted with the application of new theoretical models that can be extended to regional-scale modeling applications.