Source Analysis and Prevention Countermeasures of Air Pollutants in Zhijin County
PM2.5,PM10,and O3 were the main pollutants affecting the air quality in Zhijin County from May 2023 to April 2024,with PM2.5 being the primary pollutant in winter.Comparative analysis revealed that coal-fired heating was the main controlling factor for excessive PM2.5 content.The results of the backward trajectory method(Hysplit4)showed that the excessive PM2.5 concentration may also be related to the PM2.5 input from the surrounding areas,and the difference in air flow sources at a height of 1 000 meters may lead to spatial PM2.5 concentration differences.Based on this,measures for air pollution prevention and control have been proposed,aim to provide ideas for the prevention and control of air pollution in Zhijin County.
PM2.5backward trajectory modelprevention and control countermeasuresair pollutants
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万方数据
