Triboemission of nanoparticle aerosols: a new experimental approach and modelling

Abstract

Contamination of breathable air by particulate matter has becoming one of the challenging problems in urban agglomeration. Apart from nanoparticle generation by diesel engines, there is a number of non-exhaust sources, many of which related to triboemision due to abrasion and wearing of pavements, brake pads, tires and other materials and elements. This work describes a new technique, which has been developed for quanti-tative characterization of nanoparticle aerosols though experimental simulation on various scales from basic laboratory-scale tests to in situ real-life test. A new method for analysis of the nanoparticle emission rate has been developed on the basis of the model of bal-ance of nanoparticle flows. The model has been tested using natural airborne nanoparticles and artificial aerosols.