Abstract：
In order to fully understand the carbon emission from different fuels in rural villages of China, especially in the typical atmospheric pollution areas. The characteristics of carbonaceous aerosols and carbon dioxide (CO2) with its stable carbon isotope (δ13C) were investigated in six households, which two households used coal, two households used wood as well as two households used biogas and liquefied petroleum gas (LPG), from two rural villages in Fenwei Plain from March to April 2021. It showed that the fine particulate matter (PM2.5) emitted from biogas and LPG couldn\'t be as lower as expected in this area. However, the clean fuels could relatively reduce the emissions of organic carbon (OC) and element carbon (EC) in PM2.5 compare to the solid fuels. The pyrolyzed carbon (OP) accounted more total carbon (TC) in coal than the other fuels use households, indicating that more water-soluble OC existed, and it still had the highest secondary organic carbon (SOC) than the other fuels. Meantime, the coal combustions in the two villages had the highest CO2 concentration of 527.6 ppm and 1120.6 ppm, respectively, while the clean fuels could effectively reduce it. The average δ13C values (-26.9‰) was much lighter than almost all the outdoor monitoring and similar to the δ13C values for coal combustion and vehicle emission, showing that they might be the main contributors of the regional atmospheric aerosol in this area. During the sandstorm, the indoor PM2.5 mass and CO2 were increasing obviously. The indoor cancer risk of PAHs for adults and children were greater than 1 × 10-6, exert a potential carcinogenic risk to human of solid fuels combustion in rural northern China. It is important to continue concern the solid fuel combustion and its health impact in rural areas.
摘要：
为了全面了解中国农村不同燃料的碳排放,特别是在典型的大气污染区。在六个家庭中研究了碳质气溶胶和二氧化碳（CO2）及其稳定碳同位素（δ13C）的特征，其中两个家庭使用煤炭，两个家庭使用木材，两个家庭使用沼气和液化石油气（LPG），2021年3月至4月，来自汾渭平原的两个农村。结果表明，该地区沼气和液化石油气排放的细颗粒物（PM2.5）不能像预期的那样低。然而,与固体燃料相比，清洁燃料可以相对减少PM2.5中有机碳（OC）和元素碳（EC）的排放。与使用其他燃料的家庭相比，煤中的热解碳（OP）占总碳（TC）的比例更高，表明存在更多的水溶性OC，它仍然比其他燃料具有最高的次级有机碳（SOC）。同时,两个村庄的煤燃烧的二氧化碳浓度最高，分别为527.6ppm和1120.6ppm，分别,而清洁燃料可以有效地减少它。平均δ13C值（-26.9‰）比几乎所有室外监测都要轻得多，与煤燃烧和车辆排放的δ13C值相似，表明它们可能是该地区区域大气气溶胶的主要贡献者。在沙尘暴期间，室内PM2.5质量和CO2均明显增加。PAHs对成人和儿童的室内致癌风险均大于1×10-6，在中国北方农村地区，固体燃料燃烧对人类具有潜在的致癌风险。重要的是继续关注固体燃料燃烧及其对农村地区健康的影响。
