摘要
2019年7月1-5日,石家庄市出现本年度夏季中最严重的一次污染过程。为探究其污染成因,基于石家庄市大气复合污染及灰霾监测超级站,本文对典型重污染时段进行分析。结果表明,臭氧受到气象条件和气体前体物浓度的双重影响,高温、低湿和静风的不利气象条件对臭氧生成贡献显著,O3与NO2、PAN浓度的日变化规律分别为明显的负相关与正相关。在夏季臭氧高发期,加强对氮氧化物和VOCs等臭氧前体物的管控,可有效降低臭氧浓度。
From July 1 to 5,2019,Shijiazhuang City experienced the worst pollution process in the summer of this year.In order to investigate the cause of its pollution,based on Shijiazhuang’s super composite station for atmospheric pollution and haze monitoring,this article analyzes typical heavy pollution periods.The results show that ozone is affected by both meteorological conditions and gas precursor concentrations,the adverse meteorological conditions of high temperature,low humidity,and calm wind contributed significantly to ozone generation.The daily changes of O3,NO2,and PAN concentrations were significantly negative and positive,respectively.During the high ozone season in summer,strengthening the control of ozone precursors such as nitrogen oxides and VOCs can effectively reduce the ozone concentration.
作者
白金蕊
王玮
程丽萍
李嘉欣
Bai Jinrui;Wang Wei;Cheng Liping;Li Jiaxin(Shijiazhuang Environmental Prediction Center,Shijiazhuang 050022,China)
出处
《中国资源综合利用》
2020年第4期151-153,共3页
China Resources Comprehensive Utilization