Angular and fibrous particles in lung are markers of job categories.
Copyright (c) 1997 Elsevier Science B.V. All rights reserved.
The lung concentration of angular and fibrous particles has been measured when cases are stratified into their job categories ; 21 miners (metallic mines such as gold, zinc and copper), 18 iron foundrymen, 22 non-iron foundrymen, four welders, three sand-blast workers, four construction workers, three technicians and professionals, seven workers in other trades excluding welding.
Twelve asbestos miners representing a positive exposure to asbestos and 20 people representing a background population were added to the previous groups.
Material and methods
Particles, both angular and fibrous, were extracted from lung parenchyma by a bleach digestion method, mounted on copper microscopic grids by a carbon replica technique and analyzed by transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS).
Quartz concentration was also determined by X-ray diffraction (XRD) on a silver membrane filter after the extraction from the lung parenchyma.
(1) The highest concentrations of quartz were found in mines (metallic mines), iron foundrymen and sand-blast workers.
Notable amounts quartz were found in welders and professionals. (2) The highest concentrations of short fibres were found in non-iron foundrymen, asbestos miners and construction workers. (3) The highest concentrations of long fibres were found in non-iron foundry men and asbestos miners. (...)
Mots-clés Pascal : Fibre minérale, Particule, Poumon, Homme, Exposition professionnelle, Médecine travail, Marqueur biologique, Poste travail, Activité professionnelle, Industrie extractive, Industrie métallurgique, Histoire professionnelle
Mots-clés Pascal anglais : Mineral fiber, Particle, Lung, Human, Occupational exposure, Occupational medicine, Biological marker, Workplace layout, Professional activity, Mining industry, Metallurgical industry
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0088451
Code Inist : 002B03L03. Création : 14/05/1998.