Gasoline cars produce more carbonaceous particulate matter than modern filter-equipped diesel cars.

ABSTRACT: Carbonaceous particulate matter (PM), comprising black carbon (BC), primary organic aerosol (POA) and secondary organic aerosol (SOA, from atmospheric aging of precursors), is a highly toxic vehicle exhaust component. Therefore, understanding vehicle pollution requires knowledge of both primary emissions, and how these emissions age in the atmosphere. We provide a systematic examination of carbonaceous PM emissions and parameterisation of SOA formation from modern diesel and gasoline cars at different temperatures (22, -7 °C) during controlled laboratory experiments. Carbonaceous PM emission and SOA formation is markedly higher from gasoline than diesel particle filter (DPF) and catalyst-equipped diesel cars, more so at -7 °C, contrasting with nitrogen oxides (NO_X). Higher SOA f

SUBMITTER: Platt SM 

PROVIDER: S-EPMC5509693 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature