This paper statistically analyzes the environmental air quality and annual variation characteristics of major pollutants using daily air quality monitoring data from 2018 to 2022 in Huizhou City.The results show that the number of days with good to excellent air quality in Huizhou City from 2018 to 2022 was the highest,showing a stable trend overall,without any heavy or severe pollution days,the primary pollutants are O3-8h,PM10,and PM2.5.Apart from O3-8h,the annual average concentrations of SO2,NO2,PM10,PM2.5,and 95%percentiles of CO showed a downward trend overall;the 90%percentile concentrations of O3-8h showed an upward trend overall.The study indicates that the comprehensive air quality index in Huizhou City has shown a decreasing trend year by year,and the overall air quality has improved.The proportion analysis of the single pollutant quality index shows that O3-8h has the highest proportion,followed by PM2.5 and PM10,indicating that these are the key areas for air pollution control.
维普
万方数据