2018~2020年春节期间宜春市中心城区空气质量分析

Analysis of air quality in Yichun central city during the Spring Festival from 2018 to 2020

基于2018-2020年除夕至初六的环境空气质量监测数据,分析了烟花爆竹禁放对宜春市中心城区空气质量状况的影响。结果表明:该地区空气质量逐年改善,优良天数明显提高;PM2.5、PM10、SO2、NO2、CO浓度总体呈下降趋势,这五项参数2020年的日均浓度都在低位持平或略有波动;O3浓度则受气象条件影响,与相对湿度呈负相关关系;中心城区4个国控站点2020年PM2.5、PM10、NO2、CO、O3日均浓度变化趋势基本一致,空气质量受城区生活源的影响较大。

Based on the ambient air quality monitoring data in the central urban area of Yichun city from the Spring Festival eve to the sixth day of lunar January from 2018 to 2020,the influence of banning fireworks on the air quality was analyzed.The results showed that the air quality in this area improved year by year,and the number of excellent days increased significantly.The concentrations of PM2.5,PM 10,SO2,NO2 and CO showed an overall downward trend,and the daily average concentrations of these five pollutants in 2020 were all at a low level or fluctuated slightly.The concentration of O3 was affected by meteorological conditions,and was negatively correlated with relative humidity.In 2020,the change trend of daily average concentrations of PM2.5,PM 10,NO2,CO and O3 in four national control stations in the central urban area was basically the same.The air quality was greatly affected by urban life sources.