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Carbon monoxide as an indicator for monitoring worker exposures in foundries.
NIOSH 1982 Jan; :1-163
Direct, continuous monitoring for carbon monoxide may serve as an indicator for substances that cannot be readily analyzed in real time or are difficult or impossible to analyze at prevailing workplace concentrations. The fundamental premise of the indicator monitoring concept is that the concentrations of many chemical substances in an emission can be estimated reliably from the concentration of an indicator substance. A simple mathematical model was developed to predict airborne contaminants by indicator monitoring. It was tested for validity and reliability in a gray-iron foundry, with carbon monoxide as the indicator and iron oxide as the airborne contaminant. The indicator monitoring approach was shown to be valid and useful as a tool for monitoring exposures to airborne iron in the test foundry.
Foundries; Carbon-monoxide; Iron; Indoor-air-pollution; Iron-oxide; Air-contaminants; Exposure-monitoring; Indoor-environmental-quality
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division