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

Equivalence factors for respirable- and total-dust sampling systems

Abstract

In industrial hygiene, "inhalables dusts" are increasingly replacing the concept of so-called "total dusts" when it comes to monitoring the exposure of workers to dusts that penetrate the respiratory system. While frequently used in the past, the total dust concept has always been tainted by a certain scientific ambiguity and a lack of definition, making it difficult to establish the relationship between analysis results and workers’ health. To ensure continuity in the evaluation of worker exposure and to obtain representative data from Québec industries, the results of an inhalable dust sampler were therefore compared with those of the total dust sampler currently used in Québec. On average, measurements of inhalable dust concentrations appear twice as high as traditional measurement results for total dusts. This project was also aimed at exploring the feasibility of a single sampling strategy for measuring inhalable, thoracic and breathable dusts with the Sierra cascade impactor. This feasibility was confirmed with the addition of a filter at the mouth of the device; however, it does not lend itself to routine use.

Additional Information

Type: Project
Number: 0094-8540
Status: Completed
Year of completion: 1999
Team:
  • Guy Perrault (IRSST)
  • Daniel Drolet (IRSST)
  • Yves Cloutier (IRSST)