摘要
以贵安新区为研究区,分析2018—2023年空气质量变化趋势及污染特征。结果表明,贵安新区空气质量整体呈改善趋势,其中NO_(2)和SO_(2)浓度呈显著下降趋势。污染天中,首要污染物以O_(3)、细颗粒物(PM_(2.5))和可吸入颗粒物(PM_(10))为主,其中以O_(3)最多(占49.6%~89.5%),其次是PM2.5(占18.5%~33.3%)。根据污染天数,首要污染物1—2月和12月以PM2.5为主,3—10月以O_(3)为主。贵安新区空气污染天主要为轻微超标(占56.7%),O_(3)污染时段主要集中在3—5月和8—9月,PM_(2.5)和PM_(10)的污染时段主要集中在1—2月和12月。控制O_(3)和PM_(2.5)轻微超标,有助于显著提高贵安新区空气质量指数(Air Quality Index,AQI)的达标率。
Taking Gui’an new area as the research area,the change trends and pollution characteristics of air quality are analyzed from 2018 to 2023.The results show that the overall air quality in Gui’an new area is improving,with NO2 and SO2 concentrations showing a significant downward trend.In polluted days,the main pollutants are O_(3),fine particulate matter(PM_(2.5)),and inhalable particulate matter(PM_(10)),with O_(3) accounting for the most(accounting for 49.6%~89.5%),followed by PM_(2.5)(accounting for 18.5%~33.3%).According to the number of polluted days,PM2.5 is the main pollutant from January to February and December,while O_(3) is the main pollutant from March to October.The polluted days of air in Gui’an new area are mainly slightly exceeding the standard(accounting for 56.7%),and the O_(3) pollution period is mainly concentrated from March to May and August to September,and the pollution periods of PM_(2.5) and PM_(10) are mainly concentrated from January to February and December.Controlling slight exceeding of O_(3) and PM_(2.5) can significantly improve the compliance rate of the Air Quality Index(AQI)in Gui’an new area.
作者
王娅
WANG Ya(Gui’an New Area Bureau of Ecology and Environment,Gui’an New Area 550029,China)
出处
《中国资源综合利用》
2024年第7期196-198,共3页
China Resources Comprehensive Utilization
关键词
空气质量
变化趋势
污染特征
贵安新区
air quality
change trends
pollution characteristics
Gui’an new area
