Temporal and Spatial Distribution Characteristics and Health Risk Analysis of PM2.5 and O3 in Anhui Province from 2018 to 2021
According to the air quality monitoring data in Anhui Province from 2018 to 2021,this paper analyzed the temporal and spatial characteristics of PM2.5 and O3 and their health risks.The study suggested that from the perspective of time distribution,the annual average values of PM2.5 in Anhui Province decreased by 25.5%from 2018 to 2021,while the annual average values of O3-8 h remained unchanged;the monthly average mass concentrations of PM2.5 and O3-8 h had obvious seasonal variation characteristics;the monthly average mass concentration and exceeding days of PM2.5 reached the maximum value in winter,while the monthly average mass concentration and exceeding days of O3-8 h reached the maximum value in summer.From the perspective of spatial distribution,the annual average concentrations and exceeding days of PM2.5 and O3-8 h were the highest in northern Anhui,followed by central Anhui,and finally southern Anhui.O3 was the main health risk factor in summer and PM2.5 was the main health risk factor in winter.When PM2.5 exceeded the standard,except for northern Anhui in 2021(PM10 was the main health risk factor),PM2.5 was the main health risk factor;When O3-8 h exceeded the standard,O3 was the main health risk factor.
Anhui ProvincePM2.5O3temporal and spatial distributionhealth risk
NETL
NSTL
万方数据
