基于单颗粒质谱技术的石家庄市2016年秋季空气重污染成因分析

摘要

利用单颗粒气溶胶质谱仪(SPAMS)并综合地面空气污染监测数据、常规气象观测数据、卫星遥感火点监测资料和气流后向轨迹,分析了2016年石家庄市秋季出现的两次空气重污染过程的演变特征及主要影响因素.结果表明:机动车尾气和地面扬尘是PM2.5的重要来源.高低空稳定的天气形势配置是两次重污染过程形成的直接原因.在这些天气形势下,湿度高、风速小、气压低、逆温层厚、混合层高度低是造成两次重污染过程的重要原因.同时东南和西南方向周边污染物的输送对重污染天气的形成发展也有一定的贡献.%Using single particle aerosol mass spectrometry and ground air pollution monitoring data,convention-al meteorological data,satellite remote sensing fire monitoring data and air back trajectory,the evolution character-istics of two heavy air pollution process in Shijiazhuang city in 2016 autumn appears and the main influence factors was analyzed.The results show that vehicle exhaust and ground dust are important sources of PM 2.5.The configura-tion of the weather situation at high and low altitude is the direct cause of the formation of the two heavy pollution process.In these weather conditions,high humidity, low wind speed, low air pressure, thick inversion layer, the mixed layer height is an important cause of the two heavy pollution process.At the same time,the transport of pollu-tants in the southeast and southwest has also contributed to the formation and development of heavy pollution weath-er.