IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail

Effets respiratoires de l’exposition journalière aux particules respirables, fines et ultrafines dans divers milieux de travail


Short-term daily public exposure to fine particles (median diameter <2.5µm) and ultrafine particles (<0.1 µm) in ambient air has been linked to oxidative stress, bronchial irritation and inflammation, decreased lung capacity, respiratory symptoms and, especially, the exacerbation of chronic respiratory problems such as asthma and other obstructive lung disorders.

Although many workers are exposed to high concentrations of respirable particles larger than 4 µm – including fine and ultrafine particles (UFP) – the respiratory effects of daily exposure in industry have not been studied as much as the effects of chronic exposure.

Daily exposure may induce physiological effects (e.g. pulmonary inflammation and decreased lung functions) in some workers. If exposure is repeated over long periods, the effects may increase the risk of developing chronic respiratory problems.

This study aims to examine the relationships between the daily variation in worker exposure to fine/ultrafine particles in various work environments and the daily variation in pulmonary functions and inflammation. The results can be used to develop measures for limiting worker exposure and thus reducing lung damage.

Additional Information

Type: Project
Number: 2017-0007
Status: Ongoing
  • Audrey Smargiassi (Université de Montréal)
  • Maximilien Debia (Université de Montréal)
  • Eva Suarthana (Université de Montréal)