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Volume 67, Issue 2
  • ISSN: 2056-5135


The Euro 7 exhaust emissions regulation will be important both from the perspective of how it further improves air quality, but also of certain greenhouse gas emissions and the economics of the internal combustion engine. This paper sets out the ongoing importance of ozone to urban air quality, and how tailpipe volatile organic compound (VOC) emissions contribute to that as well as having direct human health effects through inhalation. The paper then sets out a novel method for the measurement of speciated VOCs and nitrous oxide (NO) at the tailpipe in real-world conditions, and presents initial results across a range of modern light-duty vehicles. Based on the results, it may be the case that VOCs should be a higher priority for future regulation than NO, although more research is required to achieve a consensus on typical real-world NO emissions.


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  1. Samaras Z., and Hausberger S. ‘Preliminary Findings on Possible Euro 7 Emission Limits for LD and HD Vehicles’, Online AGVES Meeting, 27th October, 2020, Consortium for ultra Low Vehicle Emissions, Aachen, Germany, 2020 LINK [Google Scholar]
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  3. Molden N. S., and Booker D. D. Emissions Analytics Ltd, UK, ‘Apparatus and Method for Sampling an Exhaust Gas’, World Patent Appl. 2022/223959 [Google Scholar]

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  • Article Type: Research Article
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