SYSTEM FOR CHARACTERISING PARTICLES IN THE FORM OF AN AEROSOL IN AN AMBIENT GAS AND ASSOCIATED METHOD

摘要

The invention relates to a system (S) for characterising the particles of an aerosol, characterised in that it comprises: - a sampler (E) suitable for collecting an ambient gas likely to comprise particles in aerosol form; - a device (D) for characterising the particles by laser-induced plasma spectrometry, suitable for generating a jet of particles with the collected particles and analysing them by interaction with a laser beam; - at least one means (M) for diluting the concentration of the particles in aerosol form in the ambient gas collected by the sampler, such that the focal volume (VF) of the laser beam only comprises one individual particle of the jet. The invention also relates to a method for implementing the system.