Impacts of Firework Consumption on Air Quality and PM2.5 Components During The Spring Festival in Suzhou City in 2022
In this study,the hourly meteorological data,PM2.5 and components data in Suzhou city during the Spring Festival in Suzhou in 2022(January 31 to February 6)were used to analyze the impacts of firework consumption on PM2.5 and its components.The results showed:the average concentration of sulfate ion(SO42-),chloride ion(Cl-),potassium ion(K+),magnesium ion(Mg2+),organic carbon(OC)and elemental carbon(EC)have a large rising during the centralized discharge of fireworks,and increased by 90.6％,783.3％,350.0％,371.4％,137.5％and 150.0％,respectively,compared with the non-centralized fire period.The significant increase in concentration were Barium(Ba),copper(Cu),chromium(Cr),potassium(K),lead(Pb),tin(Sn),manganese(Mn),antimony(Sb),silicon(Si),zinc(Zn),iron(Fe),arsenic(As),gallium(Ga)(in descending order of increase),the peak concentration of Ba+which is one of the fireworks feature ion were more than 34.9 times during the centralized discharge of fireworks compared with the non-centralized fire period.And the peak concentration of other characteristic ions were more than 8 times that of non-concentrated discharge period.The centralized discharge of fireworks increases the concentration of gaseous pollutants significantly and two pollution peaks were formed on New Year's Eve and the day of the God of Wealth.The ratio method(M/CO)was used for quantitative evaluation and the result showed that the contribution rate of PM2.5 was 50.4％in urban area of Suzhou,which was significantly lower than that of the counties under the jurisdiction of Suzhou.It shows that the ban on setting off fireworks has a certain effect.The variation characteristics of water-soluble ions concentr-ations and OC concentrations and fireworks feature heavy metals concentrations and were consistent with PM2.5 concentrations.The results of online source profiles analysis also showed that the air quality in Suzhou during the Spring Festival was affected by centralized discharge of fireworks significantly.
The Spring FestivalFireworksPM2.5ComponentsContribution rateSuzhou
NETL
NSTL
万方数据
