合肥市环境空气主要污染物特征分析研究

Analytic Study on the Main Pollutants in the Ambient Air of Hefei City

以SO_(2)、NO_(2)、PM_(10)、PM_(2.5)、CO、O_(3)6项指标作为评价因子,对2017年1月至2019年12月合肥市环境空气主要污染物数据进行统计、分析后的结果显示:PM_(2.5)和O_(3)是环境空气的主要污染物,且有明显的季节特征,全年浓度变化曲线呈倒"U"型。气温较低的冬季PM_(2.5)为主要污染物,8月份值最低;气温较高的夏季O_(3)是主要污染物,年内浓度变化规律相似;春秋季空气质量相对稳定。全年空气质量夏季最好,冬季最差。综上所述,建议合肥市环境空气污染防治以颗粒物防治为重点。

With 6 indexes as evaluation factors including SO_(2),NO_(2),PM_(10),PM_(2.5),CO and O_(3),the results from data analysis and statistics made on the main pollutants in the ambient air of Hefei City from January in 2017 to December in 2019,shows that PM_(2.5)and O_(3)are the main pollutants with obvious seasonal characteristics,and the annual concentration curve is inverted"U".PM_(2.5)in winter with low temperature is the main pollutant,with the lowest value in August;O_(3)in summer with high temperature is the main pollutant,with a similar concentration change law within the year;the air quality is relatively stable in spring and autumn,the best in summer and the worst in winter.In conclusion,it is suggested that the prevention and control of ambient air in Hefei should focus on the control of particulate matter.