Fluctuations of occupational exposure indices to mixtures

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      <subfield code="a">Fluctuations of occupational exposure indices to mixtures</subfield>
      <subfield code="c">S. Kumagai and I. Matsunaga</subfield>
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      <subfield code="a">In workplaces, two or more hazardous substances are often used simultaneously. Daily average exposure to each can vary considerably from day to day, and thus indices (E mix) combining exposures to all substances used must vary in a more complex manner. In this study, we examined the between-days distributions of E mix using occupational data for five workers exposed to two or more organic solvents, and found E mix to be log-normally distributed. To describe the between days fluctuation of E mix, we propose a new model in which the causes of fluctuation were classified as a Specific Factor and a Common Factor. We also present a new method for estimating the distribution of E mix</subfield>
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      <subfield code="a">The Annals of occupational hygiene</subfield>
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      <subfield code="t">The Annals of occupational hygiene</subfield>
      <subfield code="d">Oxford [etc.]</subfield>
      <subfield code="g">nº 2, April 1992 ; p. 131-143</subfield>
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