Airborne Particles Emission and Generation Mechanisms of Brakes and Engine

Dear Colleagues,

Particulate matter (PM) in the atmosphere is one of the five main risks for human health. Vehicular emissions have been recognized as a significant contributor of PM in cities. Sources of vehicular PM emissions are classified as exhaust and non-exhaust sources. Exhaust particles are generated from the incomplete fuel combustion and volatilization of lubricating oil. Non-exhaust particles are generated from brake wear, tire wear, and road surface wear. Due to the increasingly strict emission regulations, the contributions of non-exhaust particle emissions to the total traffic-related particle emissions will increase further in the future.  It has been reported that the non-exhaust particle emissions are almost equal to the exhaust particle emissions. Thus, it is important to investigate the emission and generation mechanism of brake wear particles and engine combustion particles,  including the physicochemical characteristics of particles, emission factors, adverse health effects of brake wear particles, and engine emission particles. Both experimental and simulation studies of this topic are welcome. 

Dr. Long Wei
Guest Editor

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