2017—2022年北川县臭氧污染特征分析

Analysis of Ozone Pollution Characteristics in Beichuan County from 2017 to 2022

北川羌族自治县(简称北川县)位于四川盆地西北部,目前面临较大的大气污染防治压力。结合大气环境监测数据,本文分析2017—2022年北川县臭氧(O_(3))污染特征,明确臭氧污染的形成原因,并提出建议,以期为区域大气污染防治提供参考。监测结果显示,2018年、2020年臭氧污染天数最多,均为25 d;从季节分布来看,4—8月是臭氧污染的高发季节;从日变化来看,O_(3)浓度呈现出单峰结构。未来,北川县要因地制宜,综合施策,强化源头监管,全面治理臭氧污染,稳步推进区域大气污染防治。

Beichuan Qiang Autonomous County(abbreviated as Beichuan County)is located in the northwest of the Sichuan Basin,which currently faces significant pressure on air pollution prevention and control.Based on atmospheric environmental monitoring data,this paper analyzes the characteristics of ozone(O_(3))pollution in Beichuan County from 2017 to 2022,clarifies the causes of ozone pollution,and puts forward suggestions to provide reference for regional air pollution prevention and control.The monitoring results show that the number of days of ozone pollution was the highest in 2018 and 2020,both of which were 25 d;from the perspective of seasonal distribution,April to August was the season with a high incidence of ozone pollution;from the daily variation,the O_(3)concentration showed a single peak structure.In the future,Beichuan County should adapt to local conditions,implement comprehensive policies,strengthen source supervision,comprehensively control ozone pollution,and steadily promote regional air pollution prevention and control.