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Emission characteristics for polycyclic aromatic hydrocarbons from solid fuels burned in domestic stoves in rural China

机译：中国农村家庭炉灶中燃烧的固体燃料中多环芳烃的排放特性

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摘要

Emission characterization of polycyclic aromatic hydrocarbons (PAHs) from residential combustion of crop residues, woody material, coal, and biomass pellets in domestic stoves in rural China are compared in term of emission factors (EFs), influencing factors, composition profiles, isomer ratios and phase distributions. The EFs of PAHs vary by two orders of magnitude among fuel types suggesting that a detailed fuel categorization is useful in the development of an emission inventory and potential in emission abatement of PAHs by replacing dirty fuels with relatively cleaner ones. The influence of fuel moisture in biomass burning is non-linear. Biofuels with very low moisture display relatively high emissions as do fuels with very high moisture. Bituminous coals and brushwood yield relatively large fractions of high molecular PAHs. The emission factor of Benzo(a)pyrene equivalent quantity for raw bituminous coal is as high as 52 mg/kg, which is 1–2 orders of magnitude higher than the other fuels. For source diagnosis, high molecular weight isomers are more informative than low molecular weight ones and multiple ratios could be used together whenever possible.
机译：根据排放因子（EFs），影响因子，组成特征，异构体比率和相分布。 PAH的EF在燃料类型之间的变化幅度为两个数量级，这表明详细的燃料分类可用于开发排放清单，并通过用相对较干净的燃料替代PAH来减少PAH的排放。燃料水分在生物质燃烧中的影响是非线性的。水分极低的生物燃料显示出相对较高的排放量，水分极高的生物燃料也是如此。烟煤和草丛产生相对较大比例的高分子PAH。原烟煤的苯并（a）py当量排放因子高达52 mg / kg，比其他燃料高1-2个数量级。对于来源诊断，高分子量异构体比低分子量异构体更具参考价值，并且在可能的情况下可以同时使用多种比例。

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