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ECN publication
Ultrafine particles and carbon from road traffic emissions : a literature study [TNO-MA-161]
Published by: Publication date:
ECN 1-3-2000
ECN report number: Document type:
ECN-C--00-037 ECN publication
Number of pages: Full text:
38 Download PDF  

ECN and TNO carried out a literature search on the relation betweenultrafine particles/carbon emitted by road traffic and their off-road concentrations after dispersion. Background of the study is the correlation of respiratory health effects with the levels of particulate matter in urban environments. This association may be caused by various characteristics of the particulates: the number of ultrafine particles, the mass concentration of PM2.5 and PM10 or the chemical composition. In this report, an attempt is made to quantify the contribution of road traffic to the number of ultrafine particles and the amount of carbon. 'Black-smoke', for which a large national data set is available, was used as a proxy for carbon. A search was made for information on a relation between the number of ultrafine particles and levels of black smoke. Therefore the study was initiated along two lines, separately described in parts A and B: Part A is devoted to a description of the knowledge on ultrafine particles, while Part B is focused on a more quantitative assessment of carbon levels and emissions. The study was funded by the Ministry of Housing, Physical Planning and Environment and performed in the period November 1999 - February 2000. 37 refs.

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