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

Aljawhary, D., Lee, A. K. Y., and Abbatt, J. P. D.: High-resolution chemical ionization mass spectrometry (ToF-CIMS): application to study SOA composition and processing, Atmos. Meas. Tech., 6, 3211–3224, https://doi.org/10.5194/amt-6-3211-2013, 2013. 
Arnold, F., Pirjola, L., Ronkko, T., Reichl, U., Schlager, H., Lahde, T., Heikkila, J., and Keskinen, J.: First online measurements of sulfuric acid gas in modern heavy-duty diesel engine exhaust: implications for nanoparticle formation, Environ. Sci. Technol., 46, 11227–11234, 2012. 
Bernhard, A. M., Peitz, D., Elsener, M., Wokaun, A., and Kröcher, O.: Hydrolysis and thermolysis of urea and its decomposition byproducts biuret, cyanuric acid and melamine over anatase TiO2, Appl. Catal. B-Environ., 115, 129–137, 2012. 
Book, E. K., Snow, R., Long, T., Fang, T., and Baldauf, R.: Temperature effects on particulate emissions from DPF-equipped diesel trucks operating on conventional and biodiesel fuels, J. Air Waste Manage., 65, 751–758, 2015. 
Brady, J. M., Crisp, T. A., Collier, S., Kuwayama, T., Forestieri, S. D., Perraud, V., Zhang, Q., Kleeman, M. J., Cappa, C. D., and Bertram, T. H.: Real-time emission factor measurements of isocyanic acid from light duty gasoline vehicles, Environ. Sci. Technol., 48, 11405–11412, https://doi.org/10.1021/es504354p, 2014. 
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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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