Measurement of Fine Particles in Diesel Emissions Using a Real-Time Aerosol Monitor |
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| Authors: | Jiping Zhu Bio Aikawa René Pigeon |
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| Institution: | 1. Chemistry Research Division, Safe Environments , Health Canada , Ottawa , Ontario , Canada jiping_zhu@hc-sc.gc.ca;3. Chemistry Research Division, Safe Environments , Health Canada , Ottawa , Ontario , Canada;4. CANMET Energy Technology Center , Natural Resources Canada , Ottawa , Ontario , Canada |
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| Abstract: | Abstract A real-time monitoring methodology to determine diesel fine particles in diesel emissions has been evaluated. The range of particle size captured by the monitor was ～0.1 μm to 1 μm. DustTrak real-time monitors were connected to the dilution tunnel of the vehicle exhaust to measure the emissions during the vehicle tests under both dynamic and steady-state driving conditions, and concentration data were recorded every 5 sec. Test variation of the real-time monitoring among different test days was similar to that measured by traditional filter-based gravi-metric method, whereas the repeatability of the monitor data within the same-day tests was better than that of gravimetric method. Correlations between the two methods were established for different fuels tested on a single light duty vehicle. When the emissions from the reference fuel was used to convert the monitor’s response to diesel fuels, the levels determined by the real-time monitor were consistent with those measured by gravimetric method among different fuels tested. Use of the real-time monitor could provide information on the levels of fine particles that is more relevant to the public health than the total particles. |
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