Characteristics and Source Analysis of Atmospheric Particulate Pollution in Winter in Yongzhou City
This paper analyzes the air pollution in Yongzhou City during the winter of 2021,studies the impact of particulate matter on air quality,and analyzes the sources of air pollution in winter based on particulate matter component data and transmission model,providing scientific support for the subsequent air pollution control and prevention work in the local area.The results show that the concentration of PM2.5 and PM10 in Yongzhou City in winter is 60.6%,which is the main influencing parameter of air quality in winter.The air pollution in Yongzhou is affected by both external input and local emission,of which the local source accounts for about 49.5%,and the external source accounts for about 50.5%.In the secondary source of PM2.5,the secondary nitrate accounts for the highest proportion,which is 32.6%.In the primary source,the motor vehicle source and dust source account for a relatively high proportion,which are 19.6%and 13.4%respectively.It shows that motor vehicle source and dust source in winter are the key points of local control in Yongzhou City.
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万方数据
