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Use of Co2 measurements in monitoring air quality in dead-end drifts.
Schnakenberg-GH Jr.; Schaefer-P; Johnson-JH
Third International Mine Ventilation Congress, June 13-19, 1984, Harrogate, England. MJ Howes, MJ Jones, eds., London, United Kingdom: The Institution of Mining and Metallurgy, 1984 Jun; :383-389
Real-time and time-integrated measurements of CO2, CO, NO, and NO2 and gravimetric measurements of particulates analyzed for hydrogen, carbon, and the nitrogen fraction were performed in several mines and under controlled conditions in a test drift. The relationship among the contaminants was examined on the basis that the CO2 concentrations are only the result of the amount of fuel burned and the exhaust dilution if background CO2 is subtracted. The ratio of each of the other exhaust-contaminant concentrations to the CO2 concentration was found to be relatively constant for a given engine in a given activity. CO2 levels alone can be used to measure the level of diesel exhaust air quality. Furthermore, time-weighted averages of the other contaminants (CO, NO, NO2, and particulate) and CO2, or direct tailpipe measurements with the engine suitably loaded, can be made and the ratios can be compared with previous data.
Mine-gases; Mining-industry; Exhaust-gases; Diesel-emissions; Diesel-exhausts; Air-quality-monitoring; Air-sampling-techniques; Particulate-dust; Particulate-sampling-methods; Particulates
630-08-0; 124-38-9; 10102-44-0; 10024-97-2
OP; Conference/Symposia Proceedings
Third International Mine Ventilation Congress, June 13-19, 1984, Harrogate, England
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division