摘要
本文对2018年12月15-20日重庆市典型持续污染过程进行了分析。结果表明;本次污染过程受逆温、小风、大雾等区域持续不利气象扩散条件的影响,污染物持续快速累积。长时间的高湿静稳天气促进了颗粒物的二次转化和吸湿增长,使颗粒物中硝酸根、氨根等二次粒子比重增大。PM2.5最主要的来源是污染物的二次转化、移动源与生物质燃烧源。
This paper analyzes the typical continuous pollution process in Chongqing from December 15 to 20 in 2018.Results show that the pollution process was affected by the adverse meteorological diffusion conditions in areas.These adverse conditions caused the continuous of pollutants.A long period of high humidity and stable weather promoted the secondary transformation and hygroscopic growth of particles.The proportion of secondary particles was increased.The important sources of PM2.5 were secondary transformation of pollutants,etc.
作者
刘姣姣
熊桂洪
赵洁
Liu Jiaojiao;Xiong Guihong;Zhao Jie(Ecological and Environmental Monitoring Center of Chongqing,Chongqing 401147,China)
出处
《环境与发展》
2020年第9期169-169,172,共2页
Environment & Development
关键词
PM2.5污染
过程分析
二次生成
PM2.5 pollution
Process analysis
Secondary transformation
