Research Of The Change Regularity Of Aerosol Pollutants During The Spring Festival In Zhengzhou

To study the impact on air quality by PM_2.5、NO₂、SO₂、CO、O₃and PM₁₀releasedfrom pyrotechnic, as well as the change regularity of aerosol pollutants(Especially for PM_2.5)between and after pyrotechnic, a real-time sampling of atmosphere was carried out inZhengzhou during the spring festival of2013. Six factors such as PM_2.5、PM₁₀、NO₂、SO₂、CO and O₃released from pyrotechnic during the spring festival were researched in thispaper, as well as the change regularity of aerosol pollutants combined with meteorologicalcharacterisics at the same time. Due to the firecrackers, the peak concentration of pollutantsoften appear during8:00¹0:00in the morning and23:00⁰1:00in the night, and the lowconcentration often appear during3:00⁴:00in the morning and12:00¹4:00in theafternoon. The linear analysis of the data tells us that the PM_2.5、PM₁₀、NO₂、SO₂and CO arepositively correlated with each other, while the O₃is converse. The above-mentionedfactors (especially PM_2.5) show the peak value during0.5to1hour after the peak offirecrackers. It suggusts that firecrackers have great influence on PM_2.5. The concentration ofPM_2.5was15times more than the national three standard （75mg/m3） at the most serious time.It is up to the level of pathogenic contamination. In contrast of that, the O₃presents a troughvalue. In addition, the study of the correlation of PM_2.5concentration and meteorologicalconditions was carried out. The concentration of PM_2.5has a positive correlation withhumidity, while has a negative correlation with temperature、air pressure、wind speedand visibility. Some prevention countermeasures are put forward at last.