徐州市10月份重污染过程空气质量分析报告

Report on Air Quality of Heavy Pollution Process in October in Xuzhou City

重污染天气的形成有内因和外因,而细颗粒物(PM2.5)是目前对我国大气环境质量影响最大的污染物。2017年10月17日至22日,徐州市经历了一次大气重污染过程,本次过程持续时间长,对空气质量影响程度大。根据该时段气象条件和空气质量监测结果,笔者进行分析并得出结论,仅供参考。结果表明,扬尘、汽车尾气为重污染过程中PM2.5的主要来源,后期生物质燃烧比重增大;VOCs中芳香烃是二次污染物的重要来源。

The formation of heavy polluted weather has internal and external causes, and fine particulate matter（PM2.5） is currently the pollutant that has the greatest impact on China＇s atmospheric environmental quality. From October 17 to 22, 2017, Xuzhou City experienced an atmospheric heavy pollution process. The process lasted for a long time and had a great influence on air quality. According to the meteorological conditions and air quality monitoring results during this period, the author analyzed and reached conclusions for reference only. The results show that dust and vehicle exhaust are the major sources of PM2.5 in the process of heavy pollution, and the proportion of biomass burning increases in the later period; Aromatic hydrocarbons in VOCs are important sources of secondary pollutants.