Estimating effects of evaporation and condensation on volatile aerosols during inhalation exposures.
Evaporation and condensation can have significant effects on aerosols in inhalation exposure systems.
A detailed mathematical model is presented.
It is applicable to monodisperse particles and can accommodate materials which are not completely miscible in water.
Simplified equations derived from the model provide insight into the equilibrium state of a system and the characteristic times of its dynamics.
The characteristic time of transport of most of a particle's mass by evaporation and condensation is proportional to the square of the particle diameter and inversely proportional to the material's saturated vapor concentration.
When compared to the results obtained from the detailed mathematical model, predictions of the simplified equations are shown to give valuable insight into the types of changes which occur and their time-scales.
Mots-clés Pascal : Aérosol, Inhalation, Exposition professionnelle, Evaporation, Condensation, Modèle mathématique, Composé volatil, Médecine travail, Biophysique, Appareil respiratoire, Pollution
Mots-clés Pascal anglais : Aerosols, Inhalation, Occupational exposure, Evaporation, Condensation, Mathematical model, Volatile compound, Occupational medicine, Biophysics, Respiratory system, Pollution
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 92-0537564
Code Inist : 001D16C06. Création : 199406.