Abstract
Thanks to continuous improvements, equivalent methods and techniques for measuring particulate matter in the real traffic conditions have been created [2–10, 14–19]. Despite the very small emissions of these compounds, it is possible to measure them in variable traffic conditions [11, 13]. In this chapter, on the basis of a verification of the optical method (measuring exhaust gas opacity) conducted for different types of motor vehicles, it is shown that such measurements are subject to significant error and do not provide conclusive results. It should be noted that the measured value of the opacity of the exhaust gas may correspond to value of particle concentration (not emission) in the exhaust gas, but only for large particles which, by absorbing light, reduce the energy reaching the detector of the device. Ambiguity of the results is caused by their insufficient resolution and the lack of a proportional relationship between the mass of a particle and its size.
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Merkisz, J., Pielecha, J. (2015). Determination of Particulate Matter Equivalents. In: Nanoparticle Emissions From Combustion Engines. Springer Tracts on Transportation and Traffic, vol 8. Springer, Cham. https://doi.org/10.1007/978-3-319-15928-7_6
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DOI: https://doi.org/10.1007/978-3-319-15928-7_6
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