Would be good to have more info as combustion cars are planned to be replaced by E-cars. Tyre wear is considered to contribute 3-7% to PM. Should rise as E cars are heavier and can accelerate faster.
https://www.sciencedirect.com/search/advanced?qs=tyre%20wear%20PM&show=25&sortBy=relevance
Dear Kole Pieter Jan,
In my group we already distinguish tailpipe and non-exhaust emissions in PM. I can send papers if you are interested. This will, however, be a challenge in the ultrafine fraction because of the low mass and lack of suitable tracers to distinguish tyre wear from exhaust particles.
Regards, Roy
This is a very interesting topic. I wonder if micro-Raman spectroscopy could help in the determination of the composition of particles. It worth to try, at least plastic (nylon) fibers could easily be identified.
We actually work on similar topic, where we have divided urban road emissions into exhaust and non-exhaust emissions. We measure exhaust emissions directly from the tail pipe, whereas non-exhaust emissions especially resuspendable road dust is collected, segregated based on size and sent for chemical analysis for understanding the composition. We consider brake and tyre wear & tear emissions as part of the resuspended road dust.
For more information and methodology on sample collection, please look into my recent publication in "journal of Transport & Health" available on my page. Soon, we will publish an article chemical characteristics of non-exhaust.
I am currently teaming up with a Group in Germany. They are using ESEM and are able to separate tire and exhaust particulates by the particle shape. We har tested the combination of ESEM and trace analysis. Seem to work nicely. We are planning to develop this further as a Ph.D. project at NMBU.
Dear Roy Harrison
I would be interested in reading the papers you are speaking about (regarding distinguisk tailpipe and non exhaust emissions in PM). Could you please send them to me?
Best regards
fred
Dear Kole Pieter Jan,
not directly the focus on tire wear emissions... But, the attached presentation puts together some challenges to be considered when determining brake wear PN/PM emission factors on an inertia dynamometer. Based on this, we are currently developing measurement concepts to determine tire wear PN/PM emission factors under real driving conditions.
Kind regards
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