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1000
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Abstract/Summary
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This analytical method is a validated measurement procedure for the determination of carbon monoxide in workplace air. The sampling is performed stationary. In the measurement procedure the concentration of carbon monoxide is measured continuously and recorded directly. The sample flow rate is set to max 2.0 L/min. The detector records an interferogram, from which the absorption spectrum is obtained by means of an internal Fourier transform calculation. The signal patterns in the IR spectrum are compared, and the concentrations of carbon monoxide in workplace air are determined. This method is suitable for measurement at the workplace over longer time periods as well as for short‐term measurement. It is also possible to read the current CO concentration at any time. The limit of quantification is 0.29 ppm and the limit of detection is 0.09 ppm for a measurement period of one minute. For a measurement period of 20 seconds a limit of quantification of 0.41 ppm and a limit of detection of 0.12 ppm were obtained. Joint Publication of the Analytical Subcommittee of the Chemistry Board of Experts of the Expert Committee Raw Materials and Chemical Industry of the German Social Accident Insurance and the working group “Air Analyses” of the Permanent Senate Commission of the Deutsche Forschungsgemeinschaft for the Investigation of Health Hazards of Chemical Compounds in the Work Area.
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