摘要：Using the hourly monitoring data of six air pollution routine analysis indicators (PM10, PM2.5, 03, SO2, NO2 and CO) at 10 ambient air quality monitoring points in Changchun City from 2017 to 2019, combined with meteorological conditions and particulate matter sample collection Analyze the characteristics of the concentration of air pollutants near the ground, and the results show that the con- centration of air pollutants near the ground shows obvious seasonal changes. The air pollutants in winter are mainly particulate matter (PM10, PM2.5), and the air pollutants in summer are main- ly O3. Prevention and control measures have been proposed for the problems of coal smoke pollution, straw burning in open air, pollution from key indus-trial enterprises, motor vehicle emissions and urban dust pollution in Changchun. Speeding up the de- velopment of the comprehensive utilization of straw and at the same time vigorously promoting the clean treatment of loose coal is of great significance to improving the air quality in Changchun.
