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 O3,fine particulate matter(PM2.5),and inhalable particulate matter(PM10),with O3 accounting for the most(accounting for 49.6%～89.5%),followed by PM2.5(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 O3 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 O3 pollution period is mainly concentrated from March to May and August to September,and the pollution periods of PM2.5 and PM10 are mainly concentrated from January to February and December.Controlling slight exceeding of O3 and PM2.5 can significantly improve the compliance rate of the Air Quality Index(AQI)in Gui'an new area.
关键词
空气质量/变化趋势/污染特征/贵安新区
Key words
air quality/change trends/pollution characteristics/Gui'an new area
维普
万方数据