Emission of Polycyclic Aromatic Hydrocarbons and Particulate Matter from Domestic Combustion of Selected Fuels
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文摘
Polycyclic aromatic hydrocarbons (PAH) and particulatematter (PM) emission were monitored for three common fuel-stove systems in Southeast Asia, namely, Eucalyptuswood sticks open burning, charcoal stove, and coal briquettestove. Smoke samples were taken isokinetically from theflue pipe of a hood and analyzed for PAH using HPLC/FLDand UV. Wood fuel burning produced the highest emissionof 18 PAH and 11 genotoxic PAH in terms of the emissionfactor on energy basis (mg/MJ), emission rate, andpollutant concentration in smoke, while the charcoalproduced the least. On a fuel-weight basis, wood fuelproduced almost the same emission factor of the total of18 PAH (110 mg/kg) as coal briquettes but twice as much asgenotoxic PAH, 13.4 vs 6.5 mg/kg. The wood fuel highburning rate, however, resulted in the highest total 18 PAHemission rate (208 mg/h) and concentration (957 g/m3),leading to a high exposure to toxic pollutants. The PM emissionfactor in milligrams per kilogram of fuel was 51, 36, and7 for the wood, charcoal, and coal briquettes, respectively.The largest fraction of PAH in PM was found for woodfuel burning smoke. The average daily cooking of a householdof 2-3 releases 40 mg of genotoxic PAH from woodfuel, 9 mg from coal briquettes, and 3.3 mg from charcoalburning. The charcoal fuel stove was identified as thecleanest system, not taking into account the pollutant emissionduring charcoal production.

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