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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.
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.