Centro de Documentacion de Fundación MAPFRE - Determination of exposure to cobalt and nickel in the atmosphere in the hard metal industry

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. Título. III. Título: The Annals of occupational hygiene.