摘要
基于大连市国控站和超级站2022-2023 年除夕观测数据,对比分析了烟花爆竹燃放和禁燃对大气环境的影响.研究表明:2023 年燃放烟花爆竹对PM2.5、PM10和SO2 的平均贡献量分别为430.51、585.35 和47.59 μg/m3,明显高于2022 年(禁燃),禁燃管控有效降低大气污染物浓度;2023 年燃放期PM2.5浓度、OC浓度、EC浓度和OC/EC分别为1 087、27.134、3.031 μg/m3 和8.772,分别为2022 年的32.0 倍、5.7 倍、3.1 倍和1.7 倍;2023 年除夕PM1.0 浓度升高快、降低慢,PM1.0/PM10和PM2.5/PM10为56%和66%,烟花爆竹燃放对PM1.0贡献更大.
Abstract
Based on the observation data from the Dalian national air quality monitoring station and the super station on the eve of the Chinese New Year in 2022 and 2023,the impact of fireworks and firecrackers on the atmospheric environment was com-pared and analyzed.The research results showed that the average contributions of fireworks and firecrackers to PM2.5,PM10,and SO2 in 2023 were 430.51 μg/m3,585.35 μg/m3,and 47.59 μg/m3,respectively,significantly higher than in 2022(prohibition),showing that the prohibition effectively reduces the concentration of atmospheric pollutants.During the 2023 fireworks period,the concentrations of PM2.5,OC,EC,and OC/EC were 1 087 μg/m3,27.134 μg/m3,3.031 μg/m3,and 8.772,respectively,which were 32.0 times,5.7 times,3.1 times,and 1.7 times higher than in 2022.On New Year's Eve in 2023,the concentration of PM1.0 rised quickly and decreased slowly,with PM1.0/PM10 and PM2.5/PM10 accounting for 56%and 66%,respectively.Fireworks and firecrackers had a greater contribution of to PM1.0.
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NSTL
万方数据