本文以湖北襄阳市冬季典型污染过程为例，综合应用常规观测、单颗粒气溶胶质谱仪、激光雷达等多种观测手段，结合大气污染物排放源清单结果及后向轨迹分析襄阳市颗粒物污染和来源情况。结果表明本次观测期间颗粒物的主要成分为元素碳、富钾颗粒、有机碳和混合碳，其它占比相对较少。PM2.5首要污染源为燃煤源，占27.9%，其次为机动车尾气源、工业工艺源、二次无机源、扬尘源、生物质燃烧源、餐饮源、其它源，占比分别为25.3%、11.1%、8.5%、9.6%、8.8%、0.9%和7.7%；本次污染过程的颗粒物主要来自襄阳市本地区域，工业排放和机动车尾气是区域内的主要排放源。重污染过程受机动车尾气颗粒物的影响较为明显。应用激光雷达垂直观测说明本次污染过程PM2.5主要来自于区域内的排放。结合大气排放源清单分析结果表明，不同季节的主要污染源存在一定差异，典型冬季污染过程中重点管控燃煤、机动车尾气源、工业工艺源、二次源和扬尘源。
In this paper, a variety of observation methods are comprehensively applied to analyze the partic-ulate pollution and sources in Xiangyang city by combining Emission inventory and backward tra-jectory. Taking the case of a winter pollution process in Xiangyang City, Hubei Province as a case, the conventional observation, single particle aerosol mass spectrometer, Lidar, and other observational methods were comprehensively used. The results show that the pollutants from this pollution process mainly come from the area of Xiangyang City, and industrial emissions and motor vehicles are the major pollution industries in the region. Contamination from external sources is likely to come from cities in the southeast of Xiangyang in Henan and Hubei, but it is not a major cause of serious pollution. The main components of particulate matter are elemental carbon, potassium-rich particles, organic carbon, and mixed carbon, with relatively few other components. The primary source of PM2.5 pollution is coal-fired sources, with a ratio of 27.9%, followed by motor vehicle exhaust gas, accounting for 25.3%, industrial process-sources accounting for 11.1%, ranking third, and secondary inorganic sources accounting for 8.5%. The dust source accounted for 9.6%, biomass combustion sources accounted for 8.8%, restaurant sources accounted for 0.9%, and other sources accounted for 7.7%. The particulate matter in this pollution process mainly comes from the local area of Xiangyang city, and industrial emissions and motor vehicle exhaust are the main emission sources within the region. The heavy pollution process is obviously affected by particulate matter from vehicle exhaust. The application of Lidar vertical observation indicates that PM2.5 mainly comes from regional emissions in this pollution process. Combined with the Emission inventory, the results show that the main pollution sources in different seasons have some differences. Coal burning, motor vehicle exhaust, industrial process, secondary sources and dust sources are mainly controlled and controlled in the typical winter.