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The current exposure standard of 0.02 ppm ceiling for MDI by definition refers to a gaseous species. The standard method, recommended by NIOSH, for measuring MDI in air, is also based on the the assumption that MDI is in the gas phase. Investigations in our Unit indicate that a major portion of airborne MDI, in working environments during spraying operations, is present as an aerosol. In view of this finding, the standard method would underestimate the MDI concentration and describing the airborne MDI concentration in "ppm" or "volume/volume unit" in invalid. A new method for calibration of the continuous reading monitors to measure airborne MDI concentration in mg/m3 unit is described.
V Dharmarajan, and
H Weill
January 1966,
American Industrial Hygiene Association journal,
V Dharmarajan, and
H Weill
December 1977,
American Industrial Hygiene Association journal,
V Dharmarajan, and
H Weill
May 1993,
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V Dharmarajan, and
H Weill
January 1976,
European journal of toxicology and environmental hygiene. Journal europeen de toxicologie,
V Dharmarajan, and
H Weill
July 1999,
Contact dermatitis,
V Dharmarajan, and
H Weill
September 1994,
Toxicology,
V Dharmarajan, and
H Weill
February 1993,
The American review of respiratory disease,
V Dharmarajan, and
H Weill
May 1985,
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V Dharmarajan, and
H Weill
March 1996,
Ecotoxicology and environmental safety,
V Dharmarajan, and
H Weill
October 1983,
The Journal of allergy and clinical immunology,
