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Feasibility of CO2 Monitoring to Assess Air Quality in Mines Using Diesel Equipment

机译：利用柴油设备进行CO2监测评估矿井空气质量的可行性

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Diesel-engine exhaust emissions are a major concern in underground mines. Engine operating mode and condition, mine environment, and operator's habits all influence emission concentration and composition. It is not practical to measure each exhaust pollutant in underground mines; therefore, a monitoring methodology is required. The Bureau of Mines report investigates the feasibility of a monitoring methodology that uses carbon dioxide (CO2) as an indicator of mine air quality. The methodology includes (1) establishing pollutant-to-CO2 ratios for in-service equipment, (2) estimating pollutant concentrations from the ratios and in-mine CO2 measurements, and (3) using an air quality index (AQI) to combine the pollutants into a single number that indicates the associated health hazards. For the methodology to be valid, the pollutant-to-CO2 ratios must remain constant if engine operating conditions do not significantly change. The laboratory investigation determined that CO2 is an effective indicator of engine exhaust pollutants.

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