Monitoring human exposures to upper-room germicidal ultraviolet irradiation

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      <subfield code="a">Monitoring human exposures to upper-room germicidal ultraviolet irradiation</subfield>
      <subfield code="c">Melvin W. First... [et al.]</subfield>
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      <subfield code="a">After decades of neglect, the resurgence of tuberculosis in the United States between 1985 and 1992 renewed interest in the use of upper room ultraviolet germicidal irradiation to interrupt the transmission of airborne infections. The objetive is to flood the entire volume of a room above 6.5 ft with high intensity ultraviolet germicidal irradiation, while minimizing unintentional irradiance below 6.5 ft to avoid eye and skin irritation. Air exchanges between the upper and lower room result in air disinfection of the occupied space. The results of the study, based on a limited number of observations, confirmed the hypothesis. Observed doses were one-third to a factor of a hundred or more lower than the does calculated from maximum eye-level irradiances measurements in the occupants'spaces</subfield>
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      <subfield code="t">Journal of occupational and environmental hygiene</subfield>
      <subfield code="d">Cincinnati, Ohio : American Industrial Hygiene Association : American Conference of Governmental Industrial Hygienists</subfield>
      <subfield code="g">Vol. 2, nº 5, May 2005 ; p. 285-292</subfield>
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