Articles | Volume 24, issue 19
https://doi.org/10.5194/acp-24-11045-2024
https://doi.org/10.5194/acp-24-11045-2024
Research article
 | 
02 Oct 2024
Research article |  | 02 Oct 2024

Online characterization of primary and secondary emissions of particulate matter and acidic molecules from a modern fleet of city buses

Liyuan Zhou, Qianyun Liu, Christian M. Salvador, Michael Le Breton, Mattias Hallquist, Jian Zhen Yu, Chak K. Chan, and Åsa M. Hallquist

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Cited articles

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Our research on city bus emissions reveals that alternative fuels (compressed natural gas and biofuels) reduce fresh particle emissions compared to diesel. However, all fuels lead to secondary air pollution. Aiming at guiding better environmental policies, we studied 76 buses using advanced emission measurement techniques. This work sheds light on the complex effects of bus fuels on urban air quality, emphasizing the need for comprehensive evaluations of future transportation technologies.
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