Articles | Volume 16, issue 13
Atmos. Chem. Phys., 16, 8559–8570, 2016
https://doi.org/10.5194/acp-16-8559-2016
Atmos. Chem. Phys., 16, 8559–8570, 2016
https://doi.org/10.5194/acp-16-8559-2016

Research article 14 Jul 2016

Research article | 14 Jul 2016

Time-resolved characterization of primary particle emissions and secondary particle formation from a modern gasoline passenger car

Panu Karjalainen et al.

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We characterized time-resolved primary particulate emissions and secondary particle formation from a modern gasoline passenger car. In mass terms, the amount of secondary particles was 13 times the amount of primary particles. The highest emissions were observed after a cold start when the engine and catalyst performance were suboptimal. The key parameter for secondary particle formation was the amount of gaseous hydrocarbons in the exhaust.
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