Analysis of the characteristics of air pollutants in the urban area of Guiyang in 2021
Objective:To understand the characteristics of air pollutants in the urban area of Guiyang in 2021.Method:The envi-ronmental monitoring data of Guiyang urban area in 2021 were collected to evaluate and analyze the concentration characteristics of PM2.5,PM10,SO2,NO2,CO and O3-8h.Result:The average annual concentrations of PM2.5,PM10,SO2 and NO2,and the average daily concentrations of SO2,NO2 and CO of air pollutants in Guiyang urban area in 2021 all meet the requirements of the secondary standards of the Ambient Air Quality Standards.Among them,the daily average concentration of PM2.5 exceeding the standard was the highest in Wudang District(30.63 μg/m3),the overstandard rate was 1.73％,and the pollution was concen-trated in January;The highest exceedance rate of daily average concentration of PM10 was in Baiyun District(50.06 μg/m3),with an exceedance rate of 1.10％,and the pollution was concentrated in January.The highest rate of O3-8h daily concentration exceeded the standard in Guanshanhu District(74.14 μg/m3)with 1.10％,and the pollution was concentrated in June and July.PM2.5,PM10 and O3-8h were the characteristic pollutants in the urban area of Guiyang.The pollution of PM2.5 and PM10 were ob-vious in winter,while that of O3-8h was obvious in summer.Conclusion:In 2021,the air quality in the urban area of Guiyang was generally good,but the concentrations of PM2.5,PM10 and O3-8h exceeded the standard.
NETL
NSTL
万方数据
