Determination of exposure to cobalt and nickel in the atmosphere in the hard metal industry

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<title>Determination of exposure to cobalt and nickel in the atmosphere in the hard metal industry</title>
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<title>The Annals of occupational hygiene</title>
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<name type="personal" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080168735">
<namePart>Kusaka, Yukinori</namePart>
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<dateIssued encoding="marc">1992</dateIssued>
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<abstract displayLabel="Summary">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</abstract>
<note type="statement of responsibility">Y. Kusaka... [et al.]</note>
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<topic>Higiene industrial</topic>
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<topic>Contaminantes químicos</topic>
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<topic>Partículas ambientales</topic>
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<topic>Polvo</topic>
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<topic>Níquel</topic>
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<topic>Cobalto</topic>
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<topic>Contaminación atmosférica</topic>
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<topic>Métodos de análisis</topic>
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<topic>Rayos X</topic>
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<text>nº 5, October 1992 ; p. 497-507</text>
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