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首页> 外文期刊>Environmental Science & Technology >Emission Factors for Carbonaceous Particles and Polycyclic Aromatic Hydrocarbons from Residential Coal Combustion in China
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Emission Factors for Carbonaceous Particles and Polycyclic Aromatic Hydrocarbons from Residential Coal Combustion in China

机译：中国居民燃煤中碳质颗粒和多环芳烃的排放因子

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摘要

Emission factors of carbonaceous particles, including black carbon (BC) and organic carbon (OC), and polycyclic aromatic hydrocarbons (PAHs) were determined for five coals, which ranged in maturity from sub-bituminous to anthracite. They were burned in the form of honeycomb briquettes in a residential coalstove, one of the most common fuel/stove combinations in China. Smoke samples were taken through dilution sampling equipment, with a high volume sampler that could simultaneously collect emissions in both participate and gaseous phases, and a cascade impactor that could segregate particles into six fractions. Particulate BC and OC were analyzed by a thermal-optical method, and PAHs in emissions of both phases were analyzed by GC-MS. Burning of bituminous coals produced the highest emission factors of particulate matter (12.91 g/kg), BC (0.28 g/kg), OC (7.82 g/kg), and 20 PAHs (210.6 mg/kg) on the basis of burned dry ash-free (daf) coal, while the anthracite honeycomb-briquette was the cleanest household coal fuel. The size-segregated results show that more than 94% of the particles were submicron, and calculated mass median aerodynamic diameters (MMAD) of all particles were under 0.3 μm. Based on the coal consumption in the residential sector of China, 290.24 Gg (gigagrams) of particulate matter, 5.36 Gg of BC, 170.33 Gg of OC, and 4.72 Gg of 20 PAHs mass were emitted annually from household honeycomb-briquette burning during 2000. Anthracite coal should be selected preferentially and more advanced burning conditions should be applied in domestic combustion, from the viewpoint of both climate change and adverse health effects.
机译：确定了五种煤的碳素排放因子，包括黑碳（BC）和有机碳（OC）以及多环芳烃（PAHs），其成熟度从次烟煤到无烟煤不等。它们以蜂窝煤的形式在居民用的煤炉中燃烧，这是中国最常见的燃料/火炉组合之一。烟气样品是通过稀释采样设备采集的，该设备配有可同时收集参与和气相排放物的高容量采样器，以及可将颗粒分离成六个部分的级联撞击器。用热光学方法分析了颗粒BC和OC，并用GC-MS分析了两相排放中的PAHs。烟煤燃烧产生的颗粒物（12.91 g / kg），BC（0.28 g / kg），OC（7.82 g / kg）和20 PAHs（210.6 mg / kg）的最高排放因子（基于干烧）无灰（daf）煤，而无烟煤蜂窝煤是最清洁的家用煤燃料。尺寸分离的结果表明，超过94％的颗粒为亚微米级，并且所有颗粒的计算质量中值空气动力学直径（MMAD）均在0.3μm以下。根据中国住宅部门的煤炭消耗量，在2000年期间，每年用家用蜂窝状冰砖燃烧产生的颗粒物为290.24 gg（g），BC为5.36 g，OC为170.33 g，有机碳为4.72 Gg 20 PAHs。从气候变化和不利健康影响的角度出发，应优先选择无烟煤，并在家庭燃烧中采用更高级的燃烧条件。

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