广安市大气环境质量评价和污染特征分析

Assessment of Atmospheric Environmental Quality and Analysis of Pollution Characteristics in Guang’an City

2016年,广安市大气环境污染比较严重。本文结合2016年广安市大气环境的SO_(2)、NO_(2)、细颗粒物(PM_(2.5))、可吸入颗粒物(PM_(10))、O_(3)、CO监测数据,开展大气环境质量评价,分析区域大气环境污染特征。结果表明,广安市大气环境中SO_(2)、O_(3)浓度处于四川省前列,O_(3)、SO_(2)浓度处于川东北地区前列。从监测点位来看,广电花园和北辰小学优良天数贡献较大,友谊中学轻中度污染天数贡献较大,市委重度污染天数贡献较大。2016年,广安市空气质量总体呈夏好而春秋冬差的季节分布特征。各县(县级市、区)监测站点SO_(2)、NO_(2)、PM10、PM2.5的年均浓度最高值集中在前锋区,CO、O_(3)的年均浓度最高值分别出现在岳池县、武胜县。

In 2016,the atmospheric environment pollution in Guang’an City was relatively serious.Based on the monitoring data of SO_(2),NO_(2),fine particulate matter(PM_(2.5)),inhalable particulate matter(PM_(10)),O_(3),and CO in the atmospheric environment of Guang’an City in 2016,this paper conducts an assessment of atmospheric environmental quality and analyzes the characteristics of regional atmospheric environment pollution.The results indicate that the concentrations of SO_(2) and O_(3) in the atmospheric environment of Guang’an City are among the top in Sichuan Province,while the concentrations of O_(3) and SO_(2) are among the top in Northeast Sichuan.From the monitoring points,it can be seen that the days of excellent and good in Guangdian Garden and Beichen Primary School contribute significantly,the days of mild to moderate pollution in Friendship Middle School contribute significantly,and the days of severe pollution in the Municipal Party Committee contribute significantly.In 2016,the overall air quality in Guang’an City showed a seasonal distribution characteristic of good in summer and poor in spring,autumn,and winter.The highest annual concentrations of SO_(2),NO_(2),PM_(10),and PM_(2.5) at monitoring stations in various counties(county-level cities,districts)are concentrated in Qianfeng District,while the highest annual concentrations of CO and O_(3) occur in Yuechi County and Wusheng County,respectively.