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Determination of exposure to cobalt and nickel in the atmosphere in the hard metal industry
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MAP20071017929
Determination of exposure to cobalt and nickel in the atmosphere in the hard metal industry / Y. Kusaka... [et al.]
Sumario: Cobalt and nickel, matrices of hard metal, have been shown to be respiratory sensitizers. Airborne dust at hard metal-griding worksites in a factory with a work-force of about 180 grinders was analysed for cobalt and nickel. The electron-microscopic X-ray microanalysis of airborne dust particles demonstrated that they had the same metallic components as hard metal products. Andersen sampling revealed that 66% of total dust was respirable (<7 microm). Consecutive personal sampling for individuals indicated log-normally distributed concentrations of total dust and cobalt. Of the workers surveyed, 12% (16 out of 133) were exposed to cobalt at more than 50 microm exp. (-3), while 1.5% (two out of 133) were exposed to nickel concentrations of more then 50 microm exp. (-3). A correlation between cobalt exposure concentrations and nickel concentrations for individuals was significant and positive
En: The Annals of occupational hygiene. - Oxford [etc.]. - nº 5, October 1992 ; p. 497-507
1. Higiene industrial ‌. 2. Contaminantes químicos ‌. 3. Partículas ambientales ‌. 4. Polvo ‌. 5. Níquel ‌. 6. Cobalto ‌. 7. Contaminación atmosférica ‌. 8. Métodos de análisis ‌. 9. Rayos X ‌. I. Kusaka, Yukinori ‌. II. Title. III. Título: The Annals of occupational hygiene.