Gasoline cars produce more carbonaceous particulate matter than modern filter-equipped diesel cars.
- Platt SM Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, CH-5232, Villigen, Switzerland.
- El Haddad I Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, CH-5232, Villigen, Switzerland. imad.el-haddad@psi.ch.
- Pieber SM Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, CH-5232, Villigen, Switzerland.
- Zardini AA European Commission Joint Research Centre, Directorate for Energy, Transport and Climate, Sustainable Transport Unit, 21027, Ispra, (VA), Italy.
- Suarez-Bertoa R European Commission Joint Research Centre, Directorate for Energy, Transport and Climate, Sustainable Transport Unit, 21027, Ispra, (VA), Italy.
- Clairotte M European Commission Joint Research Centre, Directorate for Energy, Transport and Climate, Sustainable Transport Unit, 21027, Ispra, (VA), Italy.
- Daellenbach KR Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, CH-5232, Villigen, Switzerland.
- Huang RJ Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, CH-5232, Villigen, Switzerland.
- Slowik JG Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, CH-5232, Villigen, Switzerland.
- Hellebust S Aix Marseille Univ, CNRS, LCE, Marseille, France.
- Temime-Roussel B Aix Marseille Univ, CNRS, LCE, Marseille, France.
- Marchand N Aix Marseille Univ, CNRS, LCE, Marseille, France.
- de Gouw J NOAA Earth System Research Laboratory, Boulder, CO, USA.
- Jimenez JL CIRES, University of Colorado, Boulder, CO, USA.
- Hayes PL Département de Chimie, Université de Montréal, Montréal, Québec, Canada.
- Robinson AL Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA, 15213, USA.
- Baltensperger U Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, CH-5232, Villigen, Switzerland.
- Astorga C European Commission Joint Research Centre, Directorate for Energy, Transport and Climate, Sustainable Transport Unit, 21027, Ispra, (VA), Italy.
- Prévôt ASH Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, CH-5232, Villigen, Switzerland. andre.prevot@psi.ch.
- 2017-07-15
Published in:
- Scientific reports. - 2017
English
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 (NOX). Higher SOA formation from gasoline cars and primary emission reductions for diesels implies gasoline cars will increasingly dominate vehicular total carbonaceous PM, though older non-DPF-equipped diesels will continue to dominate the primary fraction for some time. Supported by state-of-the-art source apportionment of ambient fossil fuel derived PM, our results show that whether gasoline or diesel cars are more polluting depends on the pollutant in question, i.e. that diesel cars are not necessarily worse polluters than gasoline cars.
- Language
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- English
- Open access status
- gold
- Identifiers
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- DOI 10.1038/s41598-017-03714-9
- PMID 28706240
- Persistent URL
- https://sonar.ch/global/documents/77362
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