Characterizing emission and breathing-zone concentrations following exposure cases to fluororesin-based waterproofing spray mists.

Détails

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Etat: Public
Version: Author's accepted manuscript
Licence: Non spécifiée
ID Serval
serval:BIB_A18D696F16AC
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Characterizing emission and breathing-zone concentrations following exposure cases to fluororesin-based waterproofing spray mists.
Périodique
Journal of occupational and environmental hygiene
Auteur(s)
Vernez D.S., Droz P.O., Lazor-Blanchet C., Jaques S.
ISSN
1545-9624 (Print)
ISSN-L
1545-9624
Statut éditorial
Publié
Date de publication
09/2004
Peer-reviewed
Oui
Volume
1
Numéro
9
Pages
582-592
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
Measurements and simulations were performed to assess workers' exposure to solvent vapors and aerosols during the waterproofing of a tiled surface. This investigation followed two recent incidents in the same company where workers experienced acute respiratory illness after spraying a stain-repellent resin containing fluorinated polymers on stone-tiled walls and floors. Because the waterproofing activity had been done for years at the tile company without encountering any exposure problems prior to these cases, it was strongly suspected that the incidents were linked to a recent change in the composition of the coating mixture. Experimental measurements and simulations indicated that the emission rate of particles smaller than 10 microm may be estimated at 0.66 mg/sec (SD 0.10) for the old resin and at 0.37 mg/sec (SD 0.04) for the new one. The measurement of the solvent emission rate from surfaces coated with the two resins indicated that shortly after spraying, the emission was in the range of 18 to 20 mg/sec x m2 and was similar for both products. Solvent and overspray emission rates were introduced in a two-zone compartment model. The results obtained in the near-field indicate significant exposure to overspray mist (7 and 34 mg/m3 for new resin) and solvent vapors (80 to 350 ppm for the new resin). It was also shown that the introduction of the new resin tended to significantly decrease the levels of solvents and particulates in the workers' breathing zone. These results strongly suggest that cases of acute respiratory illness are related to the specific toxicity of the fluorinated polymer itself. The fact that the same polymer is used in various commercial products raises concern regarding other possible occupational and domestic exposures.
Mots-clé
Acrylic Resins, Adult, Aerosols, Construction Materials, Fluorocarbon Polymers/toxicity, Humans, Inhalation Exposure, Male, Occupational Exposure, Particle Size, Respiratory Tract Diseases/chemically induced, Solvents, Volatilization, Water
Pubmed
Web of science
Création de la notice
10/02/2009 12:14
Dernière modification de la notice
20/08/2020 6:09
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