Journal of Atmospheric and Environmental Optics, Volume. 18, Issue 5, 479(2023)
Change and correlation analysis of air quality in Urumqi during the epidemic of COVID-19
Figures & Tables(13)
Fig. 1. Distribution of air quality monitoring stations in Urumqi city
Fig. 2. Comparison of air quality index during two outbreaks of strict control in 2020 with the same period in 2019
Fig. 3. Comparison between PM2.5 (a) and PM10 (b) concentrations during the two 2020 epidemic quarantine period and the same period in 2019
Fig. 4. Comparison of SO2 (a), NO2 (b), O3 (c) and CO (d) concentrations during the two 2020 strict epidemic prevention and control period and during the same period in 2019
Fig. 5. Changes in the concentration of gaseous pollutants during the strict prevention and control of the two epidemics in 2020 compared to the same period in 2019
Fig. 6. Comparison between air quality index during the two strict epidemic prevention and control periods in 2020 and those in 2020
Fig. 7. Comparison of PM2.5 and PM10 concentrations between the two 2020 strict containment periods and around the outbreak in 2020
Fig. 8. Comparison of SO2, NO2, O3 and CO concentrations during the 2020 outbreak period and around the outbreak in 2020
Fig. 9. The contribution of various gaseous pollutants to the secondary synthesis of particulate matter during the two strict epidemic prevention and control periods in 2020 and during the same period in 2019
Fig. 10. Impact detection of single factor detection on air quality index during the two strict epidemic prevention and control periods in 2020 and the same period in 2019
Fig. 11. Interactive detection of the impact of air quality index during the two strict epidemic prevention and control periods in 2020 and the same period in 2019
Table 1. Description of air quality data in Urumqi[14]
View tableView in ArticleTable 1. Description of air quality data in Urumqi[14]
种类 说明 AQI 按照污染程度与空气质量情况分类表示, 目前参与评估的有细微颗粒物、可吸收粒子、二氧化硫、二氧化氮、臭氧、一氧化性碳等六项 PM2.5 细颗粒物, 是指大气中直径小于或等于2.5 μm的颗粒物, 粒径一般很小, 但具有很大的毒性 PM10 可吸入颗粒物, 指空气动力学当量直径 ≤ 10 μm的颗粒物 SO2 二氧化硫, 溶于水, 会产生亚硫酸 CO 一氧化碳, 极易与血红蛋白结合, 使血红蛋白失去携氧的能力和作用 NO2 二氧化氮, 吸入二氧化氮可能对肺组织产生强烈的刺激作用和腐蚀作用 O3 臭氧, 对眼睛和呼吸道有刺激作用, 对肺功能也有危害
Table 2. Air quality index range and class distribution[17]
View tableView in ArticleTable 2. Air quality index range and class distribution[17]
AQI指数 空气质量状况 空气质量指数等级 0～50 优 一级 51～100 良 二级 101～150 轻度污染 三级 151～200 中度污染 四级 201～250 重度污染 五级 251～300 严重污染 六级
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Juluduzi Shashan, Mei ZAN. Change and correlation analysis of air quality in Urumqi during the epidemic of COVID-19[J]. Journal of Atmospheric and Environmental Optics, 2023, 18(5): 479
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Received: Feb. 11, 2022
Accepted: --
Published Online: Dec. 1, 2023
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